According to the versions of the kernel packages installed, the EulerOS installation on the remote host is affected by the following vulnerabilities :

  - A vulnerability was found in Linux Kernel where     refcount leak in llcp_sock_bind() causing     use-after-free which might lead to privilege     escalations.(CVE-2020-25670)

  - A vulnerability was found in Linux Kernel, where a     refcount leak in llcp_sock_connect() causing     use-after-free which might lead to privilege     escalations.(CVE-2020-25671)

  - In the Linux kernel before 5.4.16, a race condition in     tty->disc_data handling in the slip and slcan line     discipline could lead to a use-after-free, aka     CID-0ace17d56824. This affects drivers/net/slip/slip.c     and drivers/net/can/slcan.c.(CVE-2020-14416)

  - An issue was discovered in the FUSE filesystem     implementation in the Linux kernel before 5.10.6, aka     CID-5d069dbe8aaf. fuse_do_getattr() calls     make_bad_inode() in inappropriate situations, causing a     system crash. NOTE: the original fix for this     vulnerability was incomplete, and its incompleteness is     tracked as CVE-2021-28950.(CVE-2020-36322)

  - In drivers/target/target_core_xcopy.c in the Linux     kernel before 5.10.7, insufficient identifier checking     in the LIO SCSI target code can be used by remote     attackers to read or write files via directory     traversal in an XCOPY request, aka CID-2896c93811e3.
    For example, an attack can occur over a network if the     attacker has access to one iSCSI LUN. The attacker     gains control over file access because I/O operations     are proxied via an attacker-selected     backstore.(CVE-2020-28374)

  - The Linux kernel before 5.11.14 has a use-after-free in     cipso_v4_genopt in net/ipv4/cipso_ipv4.c because the     CIPSO and CALIPSO refcounting for the DOI definitions     is mishandled, aka CID-ad5d07f4a9cd. This leads to     writing an arbitrary value.(CVE-2021-33033)

  - Use After Free vulnerability in nfc sockets in the     Linux Kernel before 5.12.4 allows local attackers to     elevate their privileges. In typical configurations,     the issue can only be triggered by a privileged local     user with the CAP_NET_RAW capability.(CVE-2021-23134)

  - An out-of-bounds (OOB) memory write flaw was found in     list_devices in drivers/md/dm-ioctl.c in the     Multi-device driver module in the Linux kernel before     5.12. A bound check failure allows an attacker with     special user (CAP_SYS_ADMIN) privilege to gain access     to out-of-bounds memory leading to a system crash or a     leak of internal kernel information. The highest threat     from this vulnerability is to system     availability.(CVE-2021-31916)

  - net/bluetooth/hci_request.c in the Linux kernel through     5.12.2 has a race condition for removal of the HCI     controller.(CVE-2021-32399)

  - A flaw use-after-free in the Linux kernel HCI subsystem     was found in the way user detaches bluetooth dongle or     other way triggers unregister bluetooth device event. A     local user could use this flaw to crash the system or     escalate their privileges on the system.(CVE-2021-3573)

Note that Tenable Network Security has extracted the preceding description block directly from the EulerOS security advisory. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues.

The remote Redhat Enterprise Linux 8 host has packages installed that are affected by a vulnerability as referenced in the RHSA-2022:0072 advisory.

    The kernel packages contain the Linux kernel, the core of any Linux operating system.

    Security Fix(es):

    * kernel: fuse: fuse_do_getattr() calls make_bad_inode() in inappropriate situations (CVE-2020-36322)

    For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and     other related information, refer to the CVE page(s) listed in the References section.

Tenable has extracted the preceding description block directly from the Red Hat Enterprise Linux security advisory.

Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version number.

The remote Oracle Linux 7 host has packages installed that are affected by multiple vulnerabilities as referenced in the ELSA-2021-9485 advisory.

    - fuse: fix live lock in fuse_iget() (Amir Goldstein)  [Orabug: 33396682]  {CVE-2021-28950}
    - Bluetooth: defer cleanup of resources in hci_unregister_dev() (Tetsuo Handa)  [Orabug: 33292634]     {CVE-2021-3573}
    - Bluetooth: fix the erroneous flush_work() order (Lin Ma)  [Orabug: 33292634]  {CVE-2021-3564}
    - ext4: fix race writing to an inline_data file while its xattrs are changing (Theodore Tso)  [Orabug:
    33327179]  {CVE-2021-40490}
    - fuse: fix bad inode (Miklos Szeredi)  [Orabug: 32769032]  {CVE-2020-36322}
    - tracing: Fix bug in rb_per_cpu_empty() that might cause deadloop. (Haoran Luo)  [Orabug: 33198436]     {CVE-2021-3679}
    - virtio_console: Assure used length from device is limited (Xie Yongji)  [Orabug: 33209273]     {CVE-2021-38160}
    - sctp: validate from_addr_param return (Marcelo Ricardo Leitner)  [Orabug: 33198408]  {CVE-2021-3655}

Tenable has extracted the preceding description block directly from the Oracle Linux security advisory.

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

The remote Debian 10 host has packages installed that are affected by multiple vulnerabilities as referenced in the dsa-5096 advisory.

    Several vulnerabilities have been discovered in the Linux kernel that may lead to a privilege escalation,     denial of service or information leaks. CVE-2020-29374 Jann Horn of Google reported a flaw in Linux's     virtual memory management. A parent and child process initially share all their memory, but when either     writes to a shared page, the page is duplicated and unshared (copy-on-write). However, in case an     operation such as vmsplice() required the kernel to take an additional reference to a shared page, and a     copy-on-write occurs during this operation, the kernel might have accessed the wrong process's memory. For     some programs, this could lead to an information leak or data corruption. This issue was already fixed for     most architectures, but not on MIPS and System z. This update corrects that. CVE-2020-36322,     CVE-2021-28950 The syzbot tool found that the FUSE (filesystem-in-user-space) implementation did not     correctly handle a FUSE server returning invalid attributes for a file. A local user permitted to run a     FUSE server could use this to cause a denial of service (crash). The original fix for this introduced a     different potential denial of service (infinite loop in kernel space), which has also been fixed.
    CVE-2021-3640 Lin Ma discovered a race condiiton in the Bluetooth protocol implementation that can lead to     a use-after-free. A local user could exploit this to cause a denial of service (memory corruption or     crash) or possibly for privilege escalation. CVE-2021-3744, CVE-2021-3764 minihanshen reported bugs in the     ccp driver for AMD Cryptographic Coprocessors that could lead to a resource leak. On systems using this     driver, a local user could exploit this to cause a denial of service. CVE-2021-3752 Likang Luo of NSFOCUS     Security Team discovered a flaw in the Bluetooth L2CAP implementation that can lead to a user-after-free.
    A local user could exploit this to cause a denial of service (memory corruption or crash) or possibly for     privilege escalation. CVE-2021-3760, CVE-2021-4202 Lin Ma discovered race conditions in the NCI (NFC     Controller Interface) driver, which could lead to a use-after-free. A local user could exploit this to     cause a denial of service (memory corruption or crash) or possibly for privilege escalation. This driver     is not enabled in Debian's official kernel configurations. CVE-2021-3772 A flaw was found in the SCTP     protocol implementation, which would allow a networked attacker to break an SCTP association. The attacker     would only need to know or guess the IP addresses and ports for the association. CVE-2021-4002 It was     discovered that hugetlbfs, the virtual filesystem used by applications to allocate huge pages in RAM, did     not flush the CPU's TLB in one case where it was necessary. In some circumstances a local user would be     able to read and write huge pages after they are freed and reallocated to a different process. This could     lead to privilege escalation, denial of service or information leaks. CVE-2021-4083 Jann Horn reported a     race condition in the local (Unix) sockets garbage collector, that can lead to use-after-free. A local     user could exploit this to cause a denial of service (memory corruption or crash) or possibly for     privilege escalation. CVE-2021-4135 A flaw was found in the netdevsim driver which would lead to an     information leak. This driver is not enabled in Debian's official kernel configurations. CVE-2021-4155     Kirill Tkhai discovered a data leak in the way the XFS_IOC_ALLOCSP IOCTL in the XFS filesystem allowed for     a size increase of files with unaligned size. A local attacker can take advantage of this flaw to leak     data on the XFS filesystem. CVE-2021-4203 Jann Horn reported a race condition in the local (Unix) sockets     implementation that can lead to a use-after-free. A local user could exploit this to leak sensitive     information from the kernel. CVE-2021-20317 It was discovered that the timer queue structure could become     corrupt, leading to waiting tasks never being woken up. A local user with certain privileges could exploit     this to cause a denial of service (system hang). CVE-2021-20321 A race condition was discovered in the     overlayfs filesystem driver. A local user with access to an overlayfs mount and to its underlying upper     directory could exploit this for privilege escalation. CVE-2021-20322 An information leak was discovered     in the IPv4 implementation. A remote attacker could exploit this to quickly discover which UDP ports a     system is using, making it easier for them to carry out a DNS poisoning attack against that system.
    CVE-2021-22600 The syzbot tool found a flaw in the packet socket (AF_PACKET) implementation which could     lead to incorrectly freeing memory. A local user with CAP_NET_RAW capability (in any user namespace) could     exploit this for denial of service (memory corruption or crash) or possibly for privilege escalation.
    CVE-2021-28711, CVE-2021-28712, CVE-2021-28713 (XSA-391) Juergen Gross reported that malicious PV backends     can cause a denial of service to guests being serviced by those backends via high frequency events, even     if those backends are running in a less privileged environment. CVE-2021-28714, CVE-2021-28715 (XSA-392)     Juergen Gross discovered that Xen guests can force the Linux netback driver to hog large amounts of kernel     memory, resulting in denial of service. CVE-2021-38300 Piotr Krysiuk discovered a flaw in the classic BPF     (cBPF) JIT compiler for MIPS architectures. A local user could exploit this to excute arbitrary code in     the kernel. This issue is mitigated by setting sysctl net.core.bpf_jit_enable=0, which is the default. It     is *not* mitigated by disabling unprivileged use of eBPF. CVE-2021-39685 Szymon Heidrich discovered a     buffer overflow vulnerability in the USB gadget subsystem, resulting in information disclosure, denial of     service or privilege escalation. CVE-2021-39686 A race condition was discovered in the Android binder     driver, that could lead to incorrect security checks. On systems where the binder driver is loaded, a     local user could exploit this for privilege escalation. CVE-2021-39698 Linus Torvalds reported a flaw in     the file polling implementation, which could lead to a use-after-free. A local user could exploit this for     denial of service (memory corruption or crash) or possibly for privilege escalation. CVE-2021-39713 The     syzbot tool found a race condition in the network scheduling subsystem which could lead to a use-after-     free. A local user could exploit this for denial of service (memory corruption or crash) or possibly for     privilege escalation. CVE-2021-41864 An integer overflow was discovered in the Extended BPF (eBPF)     subsystem. A local user could exploit this for denial of service (memory corruption or crash), or possibly     for privilege escalation. This can be mitigated by setting sysctl kernel.unprivileged_bpf_disabled=1,     which disables eBPF use by unprivileged users. CVE-2021-42739 A heap buffer overflow was discovered in the     firedtv driver for FireWire-connected DVB receivers. A local user with access to a firedtv device could     exploit this for denial of service (memory corruption or crash), or possibly for privilege escalation.
    CVE-2021-43389 The Active Defense Lab of Venustech discovered a flaw in the CMTP subsystem as used by     Bluetooth, which could lead to an out-of-bounds read and object type confusion. A local user with     CAP_NET_ADMIN capability in the initial user namespace could exploit this for denial of service (memory     corruption or crash), or possibly for privilege escalation. CVE-2021-43975 Brendan Dolan-Gavitt reported a     flaw in the hw_atl_utils_fw_rpc_wait() function in the aQuantia AQtion ethernet device driver which can     result in denial of service or the execution of arbitrary code. CVE-2021-43976 Zekun Shen and Brendan     Dolan-Gavitt discovered a flaw in the mwifiex_usb_recv() function of the Marvell WiFi-Ex USB Driver. An     attacker able to connect a crafted USB device can take advantage of this flaw to cause a denial of     service. CVE-2021-44733 A race condition was discovered in the Trusted Execution Environment (TEE)     subsystem for Arm processors, which could lead to a use-after-free. A local user permitted to access a TEE     device could exploit this for denial of service (memory corruption or crash) or possibly for privilege     escalation. CVE-2021-45095 It was discovered that the Phone Network protocol (PhoNet) driver has a     reference count leak in the pep_sock_accept() function. CVE-2021-45469 Wenqing Liu reported an out-of-     bounds memory access in the f2fs implementation if an inode has an invalid last xattr entry. An attacker     able to mount a specially crafted image can take advantage of this flaw for denial of service.
    CVE-2021-45480 A memory leak flaw was discovered in the __rds_conn_create() function in the RDS (Reliable     Datagram Sockets) protocol subsystem. CVE-2022-0001 (INTEL-SA-00598) Researchers at VUSec discovered that     the Branch History Buffer in Intel processors can be exploited to create information side channels with     speculative execution. This issue is similar to Spectre variant 2, but requires additional mitigations on     some processors. This can be exploited to obtain sensitive information from a different security context,     such as from user-space to the kernel, or from a KVM guest to the kernel. CVE-2022-0002 (INTEL-SA-00598)     This is a similar issue to CVE-2022-0001, but covers exploitation within a security context, such as from     JIT-compiled code in a sandbox to hosting code in the same process. This can be partly mitigated by     disabling eBPF for unprivileged users with the sysctl: kernel.unprivileged_bpf_disabled=2. This update     does that by default. CVE-2022-0322 Eiichi Tsukata discovered a flaw in the sctp_make_strreset_req()     function in the SCTP network protocol implementation which can result in denial of service. CVE-2022-0330     Sushma Venkatesh Reddy discovered a missing GPU TLB flush in the i915 driver, resulting in denial of     service or privilege escalation. CVE-2022-0435 Samuel Page and Eric Dumazet reported a stack overflow in     the networking module for the Transparent Inter-Process Communication (TIPC) protocol, resulting in denial     of service or potentially the execution of arbitrary code. CVE-2022-0487 A use-after-free was discovered     in the MOXART SD/MMC Host Controller support driver. This flaw does not impact the Debian binary packages     as CONFIG_MMC_MOXART is not set. CVE-2022-0492 Yiqi Sun and Kevin Wang reported that the cgroup-v1     subsystem does not properly restrict access to the release-agent feature. A local user can take advantage     of this flaw for privilege escalation and bypass of namespace isolation. CVE-2022-0617 butt3rflyh4ck     discovered a NULL pointer dereference in the UDF filesystem. A local user that can mount a specially     crafted UDF image can use this flaw to crash the system. CVE-2022-0644 Hao Sun reported a missing check     for file read permission in the finit_module() and kexec_file_load() system calls. The security impact of     this is unclear, since these system calls are usually only available to the root user. CVE-2022-22942 It     was discovered that wrong file file descriptor handling in the VMware Virtual GPU driver (vmwgfx) could     result in information leak or privilege escalation. CVE-2022-24448 Lyu Tao reported a flaw in the NFS     implementation in the Linux kernel when handling requests to open a directory on a regular file, which     could result in a information leak. CVE-2022-24959 A memory leak was discovered in the     yam_siocdevprivate() function of the YAM driver for AX.25, which could result in denial of service.
    CVE-2022-25258 Szymon Heidrich reported the USB Gadget subsystem lacks certain validation of interface OS     descriptor requests, resulting in memory corruption. CVE-2022-25375 Szymon Heidrich reported that the     RNDIS USB gadget lacks validation of the size of the RNDIS_MSG_SET command, resulting in information leak     from kernel memory. For the oldstable distribution (buster), these problems have been fixed in version     4.19.232-1. This update additionally includes many more bug fixes from stable updates 4.19.209-4.19.232     inclusive. We recommend that you upgrade your linux packages. For the detailed security status of linux     please refer to its security tracker page at: https://security-tracker.debian.org/tracker/linux

Tenable has extracted the preceding description block directly from the Debian security advisory.

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

According to the versions of the kernel packages installed, the EulerOS Virtualization installation on the remote host is affected by the following vulnerabilities :

  - There is a flaw reported in     drivers/gpu/drm/nouveau/nouveau_sgdma.c in     nouveau_sgdma_create_ttm in Nouveau DRM subsystem. The     issue results from the lack of validating the existence     of an object prior to performing operations on the     object. An attacker with a local account with a root     privilege, can leverage this vulnerability to escalate     privileges and execute code in the context of the     kernel.(CVE-2021-20292)

  - A flaw memory leak in the Linux kernel webcam device     functionality was found in the way user calls ioctl     that triggers video_usercopy function. The highest     threat from this vulnerability is to system     availability.(CVE-2021-30002)

  - A flaw was found in the Linux kernel. The usbip driver     allows attackers to cause a denial of service (GPF)     because the stub-up sequence has race conditions during     an update of the local and shared status. The highest     threat from this vulnerability is to system     availability.(CVE-2021-29265)

  - A flaw in the Linux kernels implementation of the RPA     PCI Hotplug driver for power-pc. A user with     permissions to write to the sysfs settings for this     driver can trigger a buffer overflow when writing a new     device name to the driver from userspace, overwriting     data in the kernel's stack.(CVE-2021-28972)

  - rtw_wx_set_scan in     drivers/staging/rtl8188eu/os_dep/ioctl_linux.c in the     Linux kernel through 5.11.6 allows writing beyond the     end of the ->ssid[] array. NOTE: from the perspective     of kernel.org releases, CVE IDs are not normally used     for drivers/staging/* (unfinished work) however, system     integrators may have situations in which a     drivers/staging issue is relevant to their own customer     base.(CVE-2021-28660)

  - A race condition flaw was found in get_old_root in     fs/btrfs/ctree.c in the Linux kernel in btrfs     file-system. This flaw allows a local attacker with a     special user privilege to cause a denial of service due     to not locking an extent buffer before a cloning     operation. The highest threat from this vulnerability     is to system availability.(CVE-2021-28964)

  - A flaw was found in the Linux kernel. This flaw allows     attackers to obtain sensitive information from kernel     memory because of a partially uninitialized data     structure. The highest threat from this vulnerability     is to confidentiality.(CVE-2021-29647)

  - A flaw was found in the Linux kernel. The Freescale     Gianfar Ethernet driver allows attackers to cause a     system crash due to a negative fragment size calculated     in situations involving an RX queue overrun when jumbo     packets are used and NAPI is enabled. The highest     threat from this vulnerability is to data integrity and     system availability.(CVE-2021-29264)

  - An out-of-bounds (OOB) memory access flaw was found in     x25_bind in net/x25/af_x25.c in the Linux kernel. A     bounds check failure allows a local attacker with a     user account on the system to gain access to     out-of-bounds memory, leading to a system crash or a     leak of internal kernel information. The highest threat     from this vulnerability is to confidentiality,     integrity, as well as system     availability.(CVE-2020-35519)

  - A flaw was found in the Linux kernels eBPF verification     code. By default accessing the eBPF verifier is only     accessible to privileged users with CAP_SYS_ADMIN. A     flaw that triggers Integer underflow when restricting     speculative pointer arithmetic allows unprivileged     local users to leak the content of kernel memory. The     highest threat from this vulnerability is to data     confidentiality.(CVE-2020-27171)

  - A flaw was found in the Linux kernels eBPF verification     code. By default accessing the eBPF verifier is only     accessible to privileged users with CAP_SYS_ADMIN. A     local user with the ability to insert eBPF instructions     can use the eBPF verifier to abuse a spectre like flaw     where they can infer all system memory.(CVE-2020-27170)

  - A flaw was found in the Linux kernels eBPF     implementation. By default, accessing the eBPF verifier     is only accessible to privileged users with     CAP_SYS_ADMIN. A local user with the ability to insert     eBPF instructions can abuse a flaw in eBPF to corrupt     memory. The highest threat from this vulnerability is     to confidentiality, integrity, as well as system     availability.(CVE-2021-29154)

  - The fix for XSA-365 includes initialization of pointers     such that subsequent cleanup code wouldn't use     uninitialized or stale values. This initialization went     too far and may under certain conditions also overwrite     pointers which are in need of cleaning up. The lack of     cleanup would result in leaking persistent grants. The     leak in turn would prevent fully cleaning up after a     respective guest has died, leaving around zombie     domains. All Linux versions having the fix for XSA-365     applied are vulnerable. XSA-365 was classified to     affect versions back to at least 3.11.(CVE-2021-28688)

  - A denial-of-service (DoS) flaw was identified in the     Linux kernel due to an incorrect memory barrier in     xt_replace_table in net/netfilter/x_tables.c in the     netfilter subsystem.(CVE-2021-29650)

  - A flaw was found in the Nosy driver in the Linux     kernel. This issue allows a device to be inserted twice     into a doubly-linked list, leading to a use-after-free     when one of these devices is removed. The highest     threat from this vulnerability is to confidentiality,     integrity, as well as system     availability.(CVE-2021-3483)

  - A use-after-free flaw was found in the Linux kernel's     SCTP socket functionality that triggers a race     condition. This flaw allows a local user to escalate     their privileges on the system. The highest threat from     this vulnerability is to confidentiality, integrity, as     well as system availability.(CVE-2021-23133)

  - A denial of service flaw was found in fuse_do_getattr     in fs/fuse/dir.c in the kernel side of the FUSE     filesystem in the Linux kernel. A local user could use     this flaw to crash the system.(CVE-2020-36322)

Note that Tenable Network Security has extracted the preceding description block directly from the EulerOS security advisory. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues.

According to the versions of the kernel packages installed, the EulerOS installation on the remote host is affected by the following vulnerabilities :

  - A flaw was found in the Nosy driver in the Linux     kernel. This issue allows a device to be inserted twice     into a doubly-linked list, leading to a use-after-free     when one of these devices is removed. The highest     threat from this vulnerability is to confidentiality,     integrity, as well as system     availability.(CVE-2021-3483)

  - An issue was discovered in the Linux kernel before     5.11.3 when a webcam device exists. video_usercopy in     drivers/media/v4l2-core/v4l2-ioctl.c has a memory leak     for large arguments, aka     CID-fb18802a338b.(CVE-2021-30002)

  - An issue was discovered in the FUSE filesystem     implementation in the Linux kernel before 5.10.6, aka     CID-5d069dbe8aaf. fuse_do_getattr() calls     make_bad_inode() in inappropriate situations, causing a     system crash. NOTE: the original fix for this     vulnerability was incomplete, and its incompleteness is     tracked as CVE-2021-28950.(CVE-2020-36322)

  - There is a flaw reported in     drivers/gpu/drm/nouveau/nouveau_sgdma.c in     nouveau_sgdma_create_ttm in Nouveau DRM subsystem. The     issue results from the lack of validating the existence     of an object prior to performing operations on the     object. An attacker with a local account with a root     privilege, can leverage this vulnerability to escalate     privileges and execute code in the context of the     kernel.(CVE-2021-20292)

  - An issue was discovered in the Linux kernel before 5.8.
    arch/x86/kvm/svm/svm.c allows a set_memory_region_test     infinite loop for certain nested page faults, aka     CID-e72436bc3a52.(CVE-2020-36310)

  - A race condition was found in the Linux kernel in     sctp_destroy_sock. If sctp_destroy_sock is called     without sock_net(sk)->sctp.addr_wq_lock held and     sp->do_auto_asconf is true, then an element is removed     from the auto_asconf_splist without any proper locking.
    This can lead to kernel privilege escalation from the     context of a network service or from an unprivileged     process if certain conditions are met.(CVE-2021-23133)

  - In intel_pmu_drain_pebs_nhm in     arch/x86/events/intel/ds.c in the Linux kernel through     5.11.8 on some Haswell CPUs, userspace applications     (such as perf-fuzzer) can cause a system crash because     the PEBS status in a PEBS record is mishandled, aka     CID-d88d05a9e0b6.(CVE-2021-28971)

  - BPF JIT compilers in the Linux kernel through 5.11.12     have incorrect computation of branch displacements,     allowing them to execute arbitrary code within the     kernel context. This affects     arch/x86/net/bpf_jit_comp.c and     arch/x86/net/bpf_jit_comp32.c.(CVE-2021-29154)

  - An issue was discovered in the Linux kernel before     5.11.11. qrtr_recvmsg in net/qrtr/qrtr.c allows     attackers to obtain sensitive information from kernel     memory because of a partially uninitialized data     structure, aka CID-50535249f624.(CVE-2021-29647)

  - An issue was discovered in the Linux kernel before 5.7.
    The KVM subsystem allows out-of-range access to     memslots after a deletion, aka CID-0774a964ef56. This     affects arch/s390/kvm/kvm-s390.c,     include/linux/kvm_host.h, and     virt/kvm/kvm_main.c.(CVE-2020-36313)

  - A race condition was discovered in get_old_root in     fs/btrfs/ctree.c in the Linux kernel through 5.11.8. It     allows attackers to cause a denial of service (BUG)     because of a lack of locking on an extent buffer before     a cloning operation, aka     CID-dbcc7d57bffc.(CVE-2021-28964)

  - An issue was discovered in the Linux kernel through     5.11.10. drivers/net/ethernet/freescale/gianfar.c in     the Freescale Gianfar Ethernet driver allows attackers     to cause a system crash because a negative fragment     size is calculated in situations involving an rx queue     overrun when jumbo packets are used and NAPI is     enabled, aka CID-d8861bab48b6.(CVE-2021-29264)

  - An issue was discovered in the Linux kernel before     5.11.8. kernel/bpf/verifier.c has an off-by-one error     (with a resultant integer underflow) affecting     out-of-bounds speculation on pointer arithmetic,     leading to side-channel attacks that defeat Spectre     mitigations and obtain sensitive information from     kernel memory, aka CID-10d2bb2e6b1d.(CVE-2020-27171)

  - An out-of-bounds (OOB) memory access flaw was found in     x25_bind in net/x25/af_x25.c in the Linux kernel. A     bounds check failure allows a local attacker with a     user account on the system to gain access to     out-of-bounds memory, leading to a system crash or a     leak of internal kernel information. The highest threat     from this vulnerability is to confidentiality,     integrity, as well as system     availability.(CVE-2020-35519)

  - An issue was discovered in the Linux kernel before     5.11.11. The netfilter subsystem allows attackers to     cause a denial of service (panic) because     net/netfilter/x_tables.c and     include/linux/netfilter/x_tables.h lack a full memory     barrier upon the assignment of a new table value, aka     CID-175e476b8cdf.(CVE-2021-29650)

  - rtw_wx_set_scan in     drivers/staging/rtl8188eu/os_dep/ioctl_linux.c in the     Linux kernel through 5.11.6 allows writing beyond the     end of the ->ssid[] array. NOTE: from the perspective     of kernel.org releases, CVE IDs are not normally used     for drivers/staging/* (unfinished work) however, system     integrators may have situations in which a     drivers/staging issue is relevant to their own customer     base.(CVE-2021-28660)

  - An issue was discovered in the Linux kernel before 5.9.
    arch/x86/kvm/svm/sev.c allows attackers to cause a     denial of service (soft lockup) by triggering     destruction of a large SEV VM (which requires     unregistering many encrypted regions), aka     CID-7be74942f184.(CVE-2020-36311)

  - An issue was discovered in the Linux kernel before     5.8.10. virt/kvm/kvm_main.c has a     kvm_io_bus_unregister_dev memory leak upon a kmalloc     failure, aka CID-f65886606c2d.(CVE-2020-36312)

Note that Tenable Network Security has extracted the preceding description block directly from the EulerOS security advisory. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues.

The version of AOS installed on the remote host is prior to 5.20.3.5. It is, therefore, affected by multiple vulnerabilities as referenced in the NXSA-AOS-5.20.3.5 advisory.

  - CVE-2020-9493 identified a deserialization issue that was present in Apache Chainsaw. Prior to Chainsaw     V2.0 Chainsaw was a component of Apache Log4j 1.2.x where the same issue exists. (CVE-2022-23307)

  - By design, the JDBCAppender in Log4j 1.2.x accepts an SQL statement as a configuration parameter where the     values to be inserted are converters from PatternLayout. The message converter, %m, is likely to always be     included. This allows attackers to manipulate the SQL by entering crafted strings into input fields or     headers of an application that are logged allowing unintended SQL queries to be executed. Note this issue     only affects Log4j 1.x when specifically configured to use the JDBCAppender, which is not the default.
    Beginning in version 2.0-beta8, the JDBCAppender was re-introduced with proper support for parameterized     SQL queries and further customization over the columns written to in logs. Apache Log4j 1.2 reached end of     life in August 2015. Users should upgrade to Log4j 2 as it addresses numerous other issues from the     previous versions. (CVE-2022-23305)

  - AIDE before 0.17.4 allows local users to obtain root privileges via crafted file metadata (such as XFS     extended attributes or tmpfs ACLs), because of a heap-based buffer overflow. (CVE-2021-45417)

  - Included in Log4j 1.2 is a SocketServer class that is vulnerable to deserialization of untrusted data     which can be exploited to remotely execute arbitrary code when combined with a deserialization gadget when     listening to untrusted network traffic for log data. This affects Log4j versions up to 1.2 up to 1.2.17.
    (CVE-2019-17571)

  - Improper validation of certificate with host mismatch in Apache Log4j SMTP appender. This could allow an     SMTPS connection to be intercepted by a man-in-the-middle attack which could leak any log messages sent     through that appender. Fixed in Apache Log4j 2.12.3 and 2.13.1 (CVE-2020-9488)

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

The remote SUSE Linux SLED15 / SLES15 host has packages installed that are affected by multiple vulnerabilities as referenced in the SUSE-SU-2021:1977-1 advisory.

    The SUSE Linux Enterprise 15 SP3 kernel was updated to receive various security and bugfixes.


    The following security bugs were fixed:

    - CVE-2021-33200: Enforcing incorrect limits for pointer arithmetic operations by the BPF verifier could     be abused to perform out-of-bounds reads and writes in kernel memory (bsc#1186484).
    - CVE-2021-33034: Fixed a use-after-free when destroying an hci_chan. This could lead to writing an     arbitrary values. (bsc#1186111)
    - CVE-2020-26139: Fixed a denial-of-service when an Access Point (AP) forwards EAPOL frames to other     clients even though the sender has not yet successfully authenticated to the AP. (bnc#1186062)
    - CVE-2021-23134: A Use After Free vulnerability in nfc sockets allowed local attackers to elevate their     privileges. (bnc#1186060)
    - CVE-2021-3491: Fixed a potential heap overflow in mem_rw(). This vulnerability is related to the     PROVIDE_BUFFERS operation, which allowed the MAX_RW_COUNT limit to be bypassed (bsc#1185642).
    - CVE-2021-32399: Fixed a race condition when removing the HCI controller (bnc#1184611).
    - CVE-2020-24586: The 802.11 standard that underpins Wi-Fi Protected Access (WPA, WPA2, and WPA3) and     Wired Equivalent Privacy (WEP) doesn't require that received fragments be cleared from memory after     (re)connecting to a network. Under the right circumstances this can be abused to inject arbitrary network     packets and/or exfiltrate user data (bnc#1185859).
    - CVE-2020-24587: The 802.11 standard that underpins Wi-Fi Protected Access (WPA, WPA2, and WPA3) and     Wired Equivalent Privacy (WEP) doesn't require that all fragments of a frame are encrypted under the same     key. An adversary can abuse this to decrypt selected fragments when another device sends fragmented frames     and the WEP, CCMP, or GCMP encryption key is periodically renewed (bnc#1185859 bnc#1185862).
    - CVE-2020-24588: The 802.11 standard that underpins Wi-Fi Protected Access (WPA, WPA2, and WPA3) and     Wired Equivalent Privacy (WEP) doesn't require that the A-MSDU flag in the plaintext QoS header field is     authenticated. Against devices that support receiving non-SSP A-MSDU frames (which is mandatory as part of     802.11n), an adversary can abuse this to inject arbitrary network packets. (bnc#1185861)
    - CVE-2020-26147: The WEP, WPA, WPA2, and WPA3 implementations reassemble fragments, even though some of     them were sent in plaintext. This vulnerability can be abused to inject packets and/or exfiltrate selected     fragments when another device sends fragmented frames and the WEP, CCMP, or GCMP data-confidentiality     protocol is used (bnc#1185859).
    - CVE-2020-26145: An issue was discovered with Samsung Galaxy S3 i9305 4.4.4 devices. The WEP, WPA, WPA2,     and WPA3 implementations accept second (or subsequent) broadcast fragments even when sent in plaintext and     process them as full unfragmented frames. An adversary can abuse this to inject arbitrary network packets     independent of the network configuration. (bnc#1185860)
    - CVE-2020-26141: An issue was discovered in the ALFA driver for AWUS036H, where the Message Integrity     Check (authenticity) of fragmented TKIP frames was not verified. An adversary can abuse this to inject and     possibly decrypt packets in WPA or WPA2 networks that support the TKIP data-confidentiality protocol.
    (bnc#1185987)
    - CVE-2021-29650: Fixed an issue with the netfilter subsystem that allowed attackers to cause a denial of     service (panic) because net/netfilter/x_tables.c and include/linux/netfilter/x_tables.h lack a full memory     barrier upon the assignment of a new table value (bnc#1184208).
    - CVE-2021-29155: Fixed an issue that was discovered in kernel/bpf/verifier.c that performs undesirable     out-of-bounds speculation on pointer arithmetic, leading to side-channel attacks that defeat Spectre     mitigations and obtain sensitive information from kernel memory. Specifically, for sequences of pointer     arithmetic operations, the pointer modification performed by the first operation was not correctly     accounted for when restricting subsequent operations (bnc#1184942).
    - CVE-2021-3444: Fixed an issue with the bpf verifier which did not properly handle mod32 destination     register truncation when the source register was known to be 0 leading to out of bounds read     (bsc#1184170).
    - CVE-2021-3428: Fixed an integer overflow in ext4_es_cache_extent (bsc#1173485).
    - CVE-2021-29647: Fixed an issue in qrtr_recvmsg which could have allowed attackers to obtain sensitive     information from kernel memory because of a partially uninitialized data structure (bsc#1184192 ).
    - CVE-2021-29265: Fixed an issue in usbip_sockfd_store which could have allowed attackers to cause a     denial of service due to race conditions during an update of the local and shared status (bsc#1184167).
    - CVE-2021-29264: Fixed an issue in the Freescale Gianfar Ethernet driver which could have allowed     attackers to cause a system crash due to a calculation of negative fragment size (bsc#1184168).
    - CVE-2021-28972: Fixed a user-tolerable buffer overflow when writing a new device name to the driver from     userspace, allowing userspace to write data to the kernel stack frame directly (bsc#1184198).
    - CVE-2021-28971: Fixed an issue in intel_pmu_drain_pebs_nhm which could have caused a system crash     because the PEBS status in a PEBS record was mishandled (bsc#1184196 ).
    - CVE-2021-28964: Fixed a race condition in get_old_root which could have allowed attackers to cause a     denial of service (bsc#1184193).
    - CVE-2021-28688: Fixed an issue introduced by XSA-365 (bsc#1183646).
    - CVE-2021-28660: Fixed an out of bounds write in rtw_wx_set_scan (bsc#1183593 ).
    - CVE-2021-28375: Fixed an issue in fastrpc_internal_invoke which did not prevent user applications from     sending kernel RPC messages (bsc#1183596).
    - CVE-2021-28038: Fixed an issue with the netback driver which was lacking necessary treatment of errors     such as failed memory allocations (bsc#1183022).
    - CVE-2021-27365: Fixed an issue where an unprivileged user can send a Netlink message that is associated     with iSCSI, and has a length up to the maximum length of a Netlink message (bsc#1182715).
    - CVE-2021-27364: Fixed an issue where an attacker could craft Netlink messages (bsc#1182717).
    - CVE-2021-27363: Fixed a kernel pointer leak which could have been used to determine the address of the     iscsi_transport structure (bsc#1182716).
    - CVE-2020-35519: Fixed an out-of-bounds memory access  was found in x25_bind (bsc#1183696).
    - CVE-2020-27815: Fixed an issue in JFS filesystem  where could have allowed an attacker to execute code     (bsc#1179454).
    - CVE-2020-27171: Fixed an off-by-one error affecting out-of-bounds speculation on pointer arithmetic,     leading to side-channel attacks that defeat Spectre mitigations and obtain sensitive information from     kernel memory (bsc#1183775).
    - CVE-2020-27170: Fixed potential side-channel attacks that defeat Spectre mitigations and obtain     sensitive information from kernel memory (bsc#1183686).
    - CVE-2019-19769: Fixed a use-after-free in the perf_trace_lock_acquire function (bsc#1159280 ).
    - CVE-2019-18814: Fixed a use-after-free when aa_label_parse() fails in aa_audit_rule_init()     (bsc#1156256).
    - CVE-2021-3483: Fixed a use-after-free in nosy.c (bsc#1184393).
    - CVE-2021-30002: Fixed a memory leak for large arguments in video_usercopy (bsc#1184120).
    - CVE-2021-29154: Fixed incorrect computation of branch displacements, allowing arbitrary code execution     (bsc#1184391).
    - CVE-2021-28950: Fixed an issue in fs/fuse/fuse_i.h due to a retry loop continually was finding the same     bad inode (bsc#1184194).
    - CVE-2021-28952: Fixed a buffer overflow in the soundwire device driver, triggered when an unexpected     port ID number is encountered. (bnc#1184197).
    - CVE-2021-20268: Fixed an out-of-bounds access flaw in the implementation of the eBPF code verifier. This     flaw allowed a local user to crash the system or possibly escalate their privileges. (bnc#1183077)
    - CVE-2020-27673: Fixed a vulnerability with xen, where guest OS users could cause a denial of service     (host OS hang) via a high rate of events to dom0 (bnc#1177411).
    - CVE-2020-36312: Fixed a memory leak upon a kmalloc failure (bsc#1184509 ).
    - CVE-2020-36311: Fixed a denial of service (soft lockup) by triggering destruction of a large SEV VM     (bsc#1184511).
    - CVE-2020-36310: Fixed infinite loop for certain nested page faults (bsc#1184512).
    - CVE-2021-3489: Fixed an issue where the eBPF RINGBUF bpf_ringbuf_reserve did not check that the     allocated size was smaller than the ringbuf size (bnc#1185640).
    - CVE-2021-3490: Fixed an issue where the eBPF ALU32 bounds tracking for bitwise ops (AND, OR and XOR) did     not update the 32-bit bounds (bnc#1185641 bnc#1185796 ).
    - CVE-2020-36322: Fixed an issue was discovered in FUSE filesystem implementation which could have caused     a system crash (bsc#1184211).
    - CVE-2020-25670, CVE-2020-25671, CVE-2020-25672, CVE-2020-25673: Fixed multiple bugs in NFC subsytem     (bsc#1178181).


Tenable has extracted the preceding description block directly from the SUSE security advisory.

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

The remote SUSE Linux SUSE15 host has packages installed that are affected by multiple vulnerabilities as referenced in the openSUSE-SU-2021:1977-1 advisory.

  - An issue was discovered in the Linux kernel through 5.3.9. There is a use-after-free when aa_label_parse()     fails in aa_audit_rule_init() in security/apparmor/audit.c. (CVE-2019-18814)

  - In the Linux kernel 5.3.10, there is a use-after-free (read) in the perf_trace_lock_acquire function     (related to include/trace/events/lock.h). (CVE-2019-19769)

  - The 802.11 standard that underpins Wi-Fi Protected Access (WPA, WPA2, and WPA3) and Wired Equivalent     Privacy (WEP) doesn't require that received fragments be cleared from memory after (re)connecting to a     network. Under the right circumstances, when another device sends fragmented frames encrypted using WEP,     CCMP, or GCMP, this can be abused to inject arbitrary network packets and/or exfiltrate user data.
    (CVE-2020-24586)

  - The 802.11 standard that underpins Wi-Fi Protected Access (WPA, WPA2, and WPA3) and Wired Equivalent     Privacy (WEP) doesn't require that all fragments of a frame are encrypted under the same key. An adversary     can abuse this to decrypt selected fragments when another device sends fragmented frames and the WEP,     CCMP, or GCMP encryption key is periodically renewed. (CVE-2020-24587)

  - The 802.11 standard that underpins Wi-Fi Protected Access (WPA, WPA2, and WPA3) and Wired Equivalent     Privacy (WEP) doesn't require that the A-MSDU flag in the plaintext QoS header field is authenticated.
    Against devices that support receiving non-SSP A-MSDU frames (which is mandatory as part of 802.11n), an     adversary can abuse this to inject arbitrary network packets. (CVE-2020-24588)

  - A vulnerability was found in Linux Kernel where refcount leak in llcp_sock_bind() causing use-after-free     which might lead to privilege escalations. (CVE-2020-25670)

  - A vulnerability was found in Linux Kernel, where a refcount leak in llcp_sock_connect() causing use-after-     free which might lead to privilege escalations. (CVE-2020-25671)

  - A memory leak vulnerability was found in Linux kernel in llcp_sock_connect (CVE-2020-25672)

  - A vulnerability was found in Linux kernel where non-blocking socket in llcp_sock_connect() leads to leak     and eventually hanging-up the system. (CVE-2020-25673)

  - An issue was discovered in the kernel in NetBSD 7.1. An Access Point (AP) forwards EAPOL frames to other     clients even though the sender has not yet successfully authenticated to the AP. This might be abused in     projected Wi-Fi networks to launch denial-of-service attacks against connected clients and makes it easier     to exploit other vulnerabilities in connected clients. (CVE-2020-26139)

  - An issue was discovered in the ALFA Windows 10 driver 6.1316.1209 for AWUS036H. The Wi-Fi implementation     does not verify the Message Integrity Check (authenticity) of fragmented TKIP frames. An adversary can     abuse this to inject and possibly decrypt packets in WPA or WPA2 networks that support the TKIP data-     confidentiality protocol. (CVE-2020-26141)

  - An issue was discovered on Samsung Galaxy S3 i9305 4.4.4 devices. The WEP, WPA, WPA2, and WPA3     implementations accept second (or subsequent) broadcast fragments even when sent in plaintext and process     them as full unfragmented frames. An adversary can abuse this to inject arbitrary network packets     independent of the network configuration. (CVE-2020-26145)

  - An issue was discovered in the Linux kernel 5.8.9. The WEP, WPA, WPA2, and WPA3 implementations reassemble     fragments even though some of them were sent in plaintext. This vulnerability can be abused to inject     packets and/or exfiltrate selected fragments when another device sends fragmented frames and the WEP,     CCMP, or GCMP data-confidentiality protocol is used. (CVE-2020-26147)

  - An issue was discovered in the Linux kernel before 5.11.8. kernel/bpf/verifier.c performs undesirable out-     of-bounds speculation on pointer arithmetic, leading to side-channel attacks that defeat Spectre     mitigations and obtain sensitive information from kernel memory, aka CID-f232326f6966. This affects     pointer types that do not define a ptr_limit. (CVE-2020-27170)

  - An issue was discovered in the Linux kernel before 5.11.8. kernel/bpf/verifier.c has an off-by-one error     (with a resultant integer underflow) affecting out-of-bounds speculation on pointer arithmetic, leading to     side-channel attacks that defeat Spectre mitigations and obtain sensitive information from kernel memory,     aka CID-10d2bb2e6b1d. (CVE-2020-27171)

  - An issue was discovered in the Linux kernel through 5.9.1, as used with Xen through 4.14.x. Guest OS users     can cause a denial of service (host OS hang) via a high rate of events to dom0, aka CID-e99502f76271.
    (CVE-2020-27673)

  - A flaw was found in the JFS filesystem code in the Linux Kernel which allows a local attacker with the     ability to set extended attributes to panic the system, causing memory corruption or escalating     privileges. The highest threat from this vulnerability is to confidentiality, integrity, as well as system     availability. (CVE-2020-27815)

  - An out-of-bounds (OOB) memory access flaw was found in x25_bind in net/x25/af_x25.c in the Linux kernel     version v5.12-rc5. A bounds check failure allows a local attacker with a user account on the system to     gain access to out-of-bounds memory, leading to a system crash or a leak of internal kernel information.
    The highest threat from this vulnerability is to confidentiality, integrity, as well as system     availability. (CVE-2020-35519)

  - An issue was discovered in the Linux kernel before 5.8. arch/x86/kvm/svm/svm.c allows a     set_memory_region_test infinite loop for certain nested page faults, aka CID-e72436bc3a52.
    (CVE-2020-36310)

  - An issue was discovered in the Linux kernel before 5.9. arch/x86/kvm/svm/sev.c allows attackers to cause a     denial of service (soft lockup) by triggering destruction of a large SEV VM (which requires unregistering     many encrypted regions), aka CID-7be74942f184. (CVE-2020-36311)

  - An issue was discovered in the Linux kernel before 5.8.10. virt/kvm/kvm_main.c has a     kvm_io_bus_unregister_dev memory leak upon a kmalloc failure, aka CID-f65886606c2d. (CVE-2020-36312)

  - An issue was discovered in the FUSE filesystem implementation in the Linux kernel before 5.10.6, aka     CID-5d069dbe8aaf. fuse_do_getattr() calls make_bad_inode() in inappropriate situations, causing a system     crash. NOTE: the original fix for this vulnerability was incomplete, and its incompleteness is tracked as     CVE-2021-28950. (CVE-2020-36322)

  - An out-of-bounds access flaw was found in the Linux kernel's implementation of the eBPF code verifier in     the way a user running the eBPF script calls dev_map_init_map or sock_map_alloc. This flaw allows a local     user to crash the system or possibly escalate their privileges. The highest threat from this vulnerability     is to confidentiality, integrity, as well as system availability. (CVE-2021-20268)

  - Use After Free vulnerability in nfc sockets in the Linux Kernel before 5.12.4 allows local attackers to     elevate their privileges. In typical configurations, the issue can only be triggered by a privileged local     user with the CAP_NET_RAW capability. (CVE-2021-23134)

  - An issue was discovered in the Linux kernel through 5.11.3. A kernel pointer leak can be used to determine     the address of the iscsi_transport structure. When an iSCSI transport is registered with the iSCSI     subsystem, the transport's handle is available to unprivileged users via the sysfs file system, at     /sys/class/iscsi_transport/$TRANSPORT_NAME/handle. When read, the show_transport_handle function (in     drivers/scsi/scsi_transport_iscsi.c) is called, which leaks the handle. This handle is actually the     pointer to an iscsi_transport struct in the kernel module's global variables. (CVE-2021-27363)

  - An issue was discovered in the Linux kernel through 5.11.3. drivers/scsi/scsi_transport_iscsi.c is     adversely affected by the ability of an unprivileged user to craft Netlink messages. (CVE-2021-27364)

  - An issue was discovered in the Linux kernel through 5.11.3. Certain iSCSI data structures do not have     appropriate length constraints or checks, and can exceed the PAGE_SIZE value. An unprivileged user can     send a Netlink message that is associated with iSCSI, and has a length up to the maximum length of a     Netlink message. (CVE-2021-27365)

  - An issue was discovered in the Linux kernel through 5.11.3, as used with Xen PV. A certain part of the     netback driver lacks necessary treatment of errors such as failed memory allocations (as a result of     changes to the handling of grant mapping errors). A host OS denial of service may occur during misbehavior     of a networking frontend driver. NOTE: this issue exists because of an incomplete fix for CVE-2021-26931.
    (CVE-2021-28038)

  - An issue was discovered in the Linux kernel through 5.11.6. fastrpc_internal_invoke in     drivers/misc/fastrpc.c does not prevent user applications from sending kernel RPC messages, aka     CID-20c40794eb85. This is a related issue to CVE-2019-2308. (CVE-2021-28375)

  - rtw_wx_set_scan in drivers/staging/rtl8188eu/os_dep/ioctl_linux.c in the Linux kernel through 5.11.6     allows writing beyond the end of the ->ssid[] array. NOTE: from the perspective of kernel.org releases,     CVE IDs are not normally used for drivers/staging/* (unfinished work); however, system integrators may     have situations in which a drivers/staging issue is relevant to their own customer base. (CVE-2021-28660)

  - The fix for XSA-365 includes initialization of pointers such that subsequent cleanup code wouldn't use     uninitialized or stale values. This initialization went too far and may under certain conditions also     overwrite pointers which are in need of cleaning up. The lack of cleanup would result in leaking     persistent grants. The leak in turn would prevent fully cleaning up after a respective guest has died,     leaving around zombie domains. All Linux versions having the fix for XSA-365 applied are vulnerable.
    XSA-365 was classified to affect versions back to at least 3.11. (CVE-2021-28688)

  - An issue was discovered in fs/fuse/fuse_i.h in the Linux kernel before 5.11.8. A stall on CPU can occur     because a retry loop continually finds the same bad inode, aka CID-775c5033a0d1. (CVE-2021-28950)

  - An issue was discovered in the Linux kernel through 5.11.8. The sound/soc/qcom/sdm845.c soundwire device     driver has a buffer overflow when an unexpected port ID number is encountered, aka CID-1c668e1c0a0f. (This     has been fixed in 5.12-rc4.) (CVE-2021-28952)

  - A race condition was discovered in get_old_root in fs/btrfs/ctree.c in the Linux kernel through 5.11.8. It     allows attackers to cause a denial of service (BUG) because of a lack of locking on an extent buffer     before a cloning operation, aka CID-dbcc7d57bffc. (CVE-2021-28964)

  - In intel_pmu_drain_pebs_nhm in arch/x86/events/intel/ds.c in the Linux kernel through 5.11.8 on some     Haswell CPUs, userspace applications (such as perf-fuzzer) can cause a system crash because the PEBS     status in a PEBS record is mishandled, aka CID-d88d05a9e0b6. (CVE-2021-28971)

  - In drivers/pci/hotplug/rpadlpar_sysfs.c in the Linux kernel through 5.11.8, the RPA PCI Hotplug driver has     a user-tolerable buffer overflow when writing a new device name to the driver from userspace, allowing     userspace to write data to the kernel stack frame directly. This occurs because add_slot_store and     remove_slot_store mishandle drc_name '\0' termination, aka CID-cc7a0bb058b8. (CVE-2021-28972)

  - BPF JIT compilers in the Linux kernel through 5.11.12 have incorrect computation of branch displacements,     allowing them to execute arbitrary code within the kernel context. This affects     arch/x86/net/bpf_jit_comp.c and arch/x86/net/bpf_jit_comp32.c. (CVE-2021-29154)

  - An issue was discovered in the Linux kernel through 5.11.x. kernel/bpf/verifier.c performs undesirable     out-of-bounds speculation on pointer arithmetic, leading to side-channel attacks that defeat Spectre     mitigations and obtain sensitive information from kernel memory. Specifically, for sequences of pointer     arithmetic operations, the pointer modification performed by the first operation is not correctly     accounted for when restricting subsequent operations. (CVE-2021-29155)

  - An issue was discovered in the Linux kernel through 5.11.10. drivers/net/ethernet/freescale/gianfar.c in     the Freescale Gianfar Ethernet driver allows attackers to cause a system crash because a negative fragment     size is calculated in situations involving an rx queue overrun when jumbo packets are used and NAPI is     enabled, aka CID-d8861bab48b6. (CVE-2021-29264)

  - An issue was discovered in the Linux kernel before 5.11.7. usbip_sockfd_store in     drivers/usb/usbip/stub_dev.c allows attackers to cause a denial of service (GPF) because the stub-up     sequence has race conditions during an update of the local and shared status, aka CID-9380afd6df70.
    (CVE-2021-29265)

  - An issue was discovered in the Linux kernel before 5.11.11. qrtr_recvmsg in net/qrtr/qrtr.c allows     attackers to obtain sensitive information from kernel memory because of a partially uninitialized data     structure, aka CID-50535249f624. (CVE-2021-29647)

  - An issue was discovered in the Linux kernel before 5.11.11. The netfilter subsystem allows attackers to     cause a denial of service (panic) because net/netfilter/x_tables.c and include/linux/netfilter/x_tables.h     lack a full memory barrier upon the assignment of a new table value, aka CID-175e476b8cdf.
    (CVE-2021-29650)

  - An issue was discovered in the Linux kernel before 5.11.3 when a webcam device exists. video_usercopy in     drivers/media/v4l2-core/v4l2-ioctl.c has a memory leak for large arguments, aka CID-fb18802a338b.
    (CVE-2021-30002)

  - net/bluetooth/hci_request.c in the Linux kernel through 5.12.2 has a race condition for removal of the HCI     controller. (CVE-2021-32399)

  - In the Linux kernel before 5.12.4, net/bluetooth/hci_event.c has a use-after-free when destroying an     hci_chan, aka CID-5c4c8c954409. This leads to writing an arbitrary value. (CVE-2021-33034)

  - kernel/bpf/verifier.c in the Linux kernel through 5.12.7 enforces incorrect limits for pointer arithmetic     operations, aka CID-bb01a1bba579. This can be abused to perform out-of-bounds reads and writes in kernel     memory, leading to local privilege escalation to root. In particular, there is a corner case where the off     reg causes a masking direction change, which then results in an incorrect final aux->alu_limit.
    (CVE-2021-33200)

  - The bpf verifier in the Linux kernel did not properly handle mod32 destination register truncation when     the source register was known to be 0. A local attacker with the ability to load bpf programs could use     this gain out-of-bounds reads in kernel memory leading to information disclosure (kernel memory), and     possibly out-of-bounds writes that could potentially lead to code execution. This issue was addressed in     the upstream kernel in commit 9b00f1b78809 (bpf: Fix truncation handling for mod32 dst reg wrt zero) and     in Linux stable kernels 5.11.2, 5.10.19, and 5.4.101. (CVE-2021-3444)

  - A flaw was found in the Nosy driver in the Linux kernel. This issue allows a device to be inserted twice     into a doubly-linked list, leading to a use-after-free when one of these devices is removed. The highest     threat from this vulnerability is to confidentiality, integrity, as well as system availability. Versions     before kernel 5.12-rc6 are affected (CVE-2021-3483)

  - The eBPF RINGBUF bpf_ringbuf_reserve() function in the Linux kernel did not check that the allocated size     was smaller than the ringbuf size, allowing an attacker to perform out-of-bounds writes within the kernel     and therefore, arbitrary code execution. This issue was fixed via commit 4b81ccebaeee (bpf, ringbuf: Deny     reserve of buffers larger than ringbuf) (v5.13-rc4) and backported to the stable kernels in v5.12.4,     v5.11.21, and v5.10.37. It was introduced via 457f44363a88 (bpf: Implement BPF ring buffer and verifier     support for it) (v5.8-rc1). (CVE-2021-3489)

  - The eBPF ALU32 bounds tracking for bitwise ops (AND, OR and XOR) in the Linux kernel did not properly     update 32-bit bounds, which could be turned into out of bounds reads and writes in the Linux kernel and     therefore, arbitrary code execution. This issue was fixed via commit 049c4e13714e (bpf: Fix alu32 const     subreg bound tracking on bitwise operations) (v5.13-rc4) and backported to the stable kernels in v5.12.4,     v5.11.21, and v5.10.37. The AND/OR issues were introduced by commit 3f50f132d840 (bpf: Verifier, do     explicit ALU32 bounds tracking) (5.7-rc1) and the XOR variant was introduced by 2921c90d4718 (bpf:Fix a     verifier failure with xor) ( 5.10-rc1). (CVE-2021-3490)

  - The io_uring subsystem in the Linux kernel allowed the MAX_RW_COUNT limit to be bypassed in the     PROVIDE_BUFFERS operation, which led to negative values being usedin mem_rw when reading /proc//mem.
    This could be used to create a heap overflow leading to arbitrary code execution in the kernel. It was     addressed via commit d1f82808877b (io_uring: truncate lengths larger than MAX_RW_COUNT on provide     buffers) (v5.13-rc1) and backported to the stable kernels in v5.12.4, v5.11.21, and v5.10.37. It was     introduced in ddf0322db79c (io_uring: add IORING_OP_PROVIDE_BUFFERS) (v5.7-rc1). (CVE-2021-3491)

Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version number.

ID	Name	Product	Family	Published	Updated	Severity
153080	EulerOS 2.0 SP5 : kernel (EulerOS-SA-2021-2336)	Nessus	Huawei Local Security Checks	9/7/2021	12/1/2023	high
156656	RHEL 8 : kernel (RHSA-2022:0072)	Nessus	Red Hat Local Security Checks	1/12/2022	11/8/2024	medium
154165	Oracle Linux 7 : Unbreakable Enterprise kernel (ELSA-2021-9485)	Nessus	Oracle Linux Local Security Checks	10/15/2021	2/9/2026	high
158761	Debian DSA-5096-1 : linux - security update	Nessus	Debian Local Security Checks	3/9/2022	6/3/2026	high
150271	EulerOS Virtualization 2.9.1 : kernel (EulerOS-SA-2021-1967)	Nessus	Huawei Local Security Checks	6/4/2021	12/27/2023	high
151238	EulerOS 2.0 SP9 : kernel (EulerOS-SA-2021-2051)	Nessus	Huawei Local Security Checks	7/1/2021	12/11/2023	high
165276	Nutanix AOS : Multiple Vulnerabilities (NXSA-AOS-5.20.3.5)	Nessus	Misc.	9/21/2022	7/22/2025	critical
150901	SUSE SLED15: cluster-md-kmp-default / dlm-kmp-default / gfs2-kmp-default / etc (SUSE-SU-2021:1977-1)	Nessus	SuSE Local Security Checks	6/21/2021	6/25/2026	critical
151756	openSUSE 15 Security Update : kernel (openSUSE-SU-2021:1977-1)	Nessus	SuSE Local Security Checks	7/16/2021	1/17/2023	critical
239342	TencentOS Server 4: kernel (TSSA-2024:0981)	Nessus	Tencent Local Security Checks	6/16/2025	12/4/2025	high

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