A use-after-free flaw was found in the Linux kernel’s io_uring subsystem in the way a user sets up a ring with IORING_SETUP_IOPOLL with more than one task completing submissions on this ring. This flaw allows a local user to crash or escalate their privileges on the system.

The Unity Linux 20 host has a package installed that is affected by a vulnerability as referenced in the UTSA-2025-414479 advisory.

    A use-after-free flaw was found in the Linux kernels io_uring subsystem in the way a user sets up a     ring with IORING_SETUP_IOPOLL with more than one task completing submissions on this ring. This flaw     allows a local user to crash or escalate their privileges on the system.

Tenable has extracted the preceding description block directly from the Unity 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.

An update of the linux package has been released.

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available.

  - A use-after-free flaw was found in the Linux kernel's io_uring subsystem in the way a user sets up a ring     with IORING_SETUP_IOPOLL with more than one task completing submissions on this ring. This flaw allows a     local user to crash or escalate their privileges on the system. (CVE-2022-1786)

Note that Nessus relies on the presence of the package as reported by the vendor.

The remote Alibaba Cloud Linux 3 host has packages installed that are affected by multiple vulnerabilities as referenced in the ALINUX3-SA-2022:0158 advisory.

    Package updates are available for Alibaba Cloud Linux 3 that fix the following vulnerabilities:

    CVE-2021-33655:
    When sending malicous data to kernel by ioctl cmd FBIOPUT_VSCREENINFO,kernel will write memory out of     bounds.

    CVE-2021-33656:
    When setting font with malicous data by ioctl cmd PIO_FONT,kernel will write memory out of bounds.

    CVE-2022-0494:
    A kernel information leak flaw was identified in the scsi_ioctl function in drivers/scsi/scsi_ioctl.c in     the Linux kernel. This flaw allows a local attacker with a special user privilege (CAP_SYS_ADMIN or     CAP_SYS_RAWIO) to create issues with confidentiality.

    CVE-2022-0500:
    A flaw was found in unrestricted eBPF usage by the BPF_BTF_LOAD, leading to a possible out-of-bounds     memory write in the Linux kernels BPF subsystem due to the way a user loads BTF. This flaw allows a     local user to crash or escalate their privileges on the system.

    CVE-2022-1012:
    A memory leak problem was found in the TCP source port generation algorithm in net/ipv4/tcp.c due to the     small table perturb size. This flaw may allow an attacker to information leak and may cause a denial of     service problem.

    CVE-2022-1184:
    A use-after-free flaw was found in fs/ext4/namei.c:dx_insert_block() in the Linux kernels filesystem     sub-component. This flaw allows a local attacker with a user privilege to cause a denial of service.

    CVE-2022-1462:
    An out-of-bounds read flaw was found in the Linux kernels TeleTYpe subsystem. The issue occurs in how a     user triggers a race condition using ioctls TIOCSPTLCK and TIOCGPTPEER and TIOCSTI and TCXONC with leakage     of memory in the flush_to_ldisc function. This flaw allows a local user to crash the system or read     unauthorized random data from memory.

    CVE-2022-1652:
    Linux Kernel could allow a local attacker to execute arbitrary code on the system, caused by a concurrency     use-after-free flaw in the bad_flp_intr function. By executing a specially-crafted program, an attacker     could exploit this vulnerability to execute arbitrary code or cause a denial of service condition on the     system.

    CVE-2022-1729:
    A use-after-free flaw was found in the Linux kernels performance events functionality. A user triggers     a race condition in setting up performance monitoring between the leading PERF_TYPE_TRACEPOINT and sub     PERF_EVENT_HARDWARE plus the PERF_EVENT_SOFTWARE using the perf_event_open() function with these three     types. This flaw allows a local user to crash the system.

    CVE-2022-1734:
    A flaw in Linux Kernel found in nfcmrvl_nci_unregister_dev() in drivers/nfc/nfcmrvl/main.c can lead to use     after free both read or write when non synchronized between cleanup routine and firmware download routine.

    CVE-2022-1786:
    A use-after-free flaw was found in the Linux kernels io_uring subsystem in the way a user sets up a     ring with IORING_SETUP_IOPOLL with more than one task completing submissions on this ring. This flaw     allows a local user to crash or escalate their privileges on the system.

    CVE-2022-1789:
    With shadow paging enabled, the INVPCID instruction results in a call to kvm_mmu_invpcid_gva. If INVPCID     is executed with CR0.PG=0, the invlpg callback is not set and the result is a NULL pointer dereference.

    CVE-2022-1836:
    ** REJECT ** DO NOT USE THIS CANDIDATE NUMBER. ConsultIDs: CVE-2022-33981. Reason: This candidate is a     reservation duplicate of CVE-2022-33981. Notes: All CVE users should reference CVE-2022-33981 instead of     this candidate. All references and descriptions in this candidate have been removed to prevent accidental     usage.

    CVE-2022-1966:
    ** REJECT ** DO NOT USE THIS CANDIDATE NUMBER. ConsultIDs: CVE-2022-32250. Reason: This candidate is a     duplicate of CVE-2022-32250. Notes: All CVE users should reference CVE-2022-32250 instead of this     candidate. All references and descriptions in this candidate have been removed to prevent accidental     usage.

    CVE-2022-1972:
    CVE-2022-1972 is duplicate of CVE-2022-2078, so please consider CVE-2022-2078 instead.

    CVE-2022-1974:
    A use-after-free flaw was found in the Linux kernel's NFC core functionality due to a race condition     between kobject creation and delete. This vulnerability allows a local attacker with CAP_NET_ADMIN     privilege to leak kernel information.

    CVE-2022-1975:
    No description is available for this CVE.

    CVE-2022-2078:
    A vulnerability was found in the Linux kernel's nft_set_desc_concat_parse() function .This flaw allows an     attacker to trigger a buffer overflow via nft_set_desc_concat_parse() , causing a denial of service and     possibly to run code.

    CVE-2022-21123:
    Incomplete cleanup of multi-core shared buffers for some Intel(R) Processors may allow an authenticated     user to potentially enable information disclosure via local access.

    CVE-2022-21125:
    Incomplete cleanup of microarchitectural fill buffers on some Intel(R) Processors may allow an     authenticated user to potentially enable information disclosure via local access.

    CVE-2022-21166:
    Incomplete cleanup in specific special register write operations for some Intel(R) Processors may allow an     authenticated user to potentially enable information disclosure via local access.

    CVE-2022-21499:
    KGDB and KDB allow read and write access to kernel memory, and thus should be restricted during lockdown.
    An attacker with access to a serial port could trigger the debugger so it is important that the debugger     respect the lockdown mode when/if it is triggered. CVSS 3.1 Base Score 6.5 (Confidentiality, Integrity and     Availability impacts). CVSS Vector: (CVSS:3.1/AV:L/AC:L/PR:H/UI:R/S:U/C:H/I:H/A:H).

    CVE-2022-21505:
    A bug in the IMA subsystem was discovered which would incorrectly allow kexec to be used when kernel     lockdown was enabled

    CVE-2022-2153:
    A flaw was found in the Linux kernels KVM when attempting to set a SynIC IRQ. This issue makes it     possible for a misbehaving VMM to write to SYNIC/STIMER MSRs, causing a NULL pointer dereference. This     flaw allows an unprivileged local attacker on the host to issue specific ioctl calls, causing a kernel     oops condition that results in a denial of service.

    CVE-2022-2318:
    There are use-after-free vulnerabilities caused by timer handler in net/rose/rose_timer.c of linux that     allow attackers to crash linux kernel without any privileges.

    CVE-2022-23816:
    A flaw was found in hw. Mis-trained branch predictions for return instructions may allow arbitrary     speculative code execution under certain microarchitecture-dependent conditions.

    CVE-2022-2503:
    Dm-verity is used for extending root-of-trust to root filesystems. LoadPin builds on this property to     restrict module/firmware loads to just the trusted root filesystem. Device-mapper table reloads currently     allow users with root privileges to switch out the target with an equivalent dm-linear target and bypass     verification till reboot. This allows root to bypass LoadPin and can be used to load untrusted and     unverified kernel modules and firmware, which implies arbitrary kernel execution and persistence for     peripherals that do not verify firmware updates.

    CVE-2022-2586:
    A use-after-free flaw was found in nf_tables cross-table in the net/netfilter/nf_tables_api.c function in     the Linux kernel. This flaw allows a local, privileged attacker to cause a use-after-free problem at the     time of table deletion, possibly leading to local privilege escalation.

    CVE-2022-2588:
    A use-after-free flaw was found in route4_change in the net/sched/cls_route.c filter implementation in the     Linux kernel. This flaw allows a local user to crash the system and possibly lead to a local privilege     escalation problem.

    CVE-2022-26365:
    Linux disk/nic frontends data leaks [This CNA information record relates to multiple CVEs; the text     explains which aspects/vulnerabilities correspond to which CVE.] Linux Block and Network PV device     frontends don't zero memory regions before sharing them with the backend (CVE-2022-26365, CVE-2022-33740).
    Additionally the granularity of the grant table doesn't allow sharing less than a 4K page, leading to     unrelated data residing in the same 4K page as data shared with a backend being accessible by such backend     (CVE-2022-33741, CVE-2022-33742).

    CVE-2022-2639:
    An integer coercion error was found in the openvswitch kernel module. Given a sufficiently large number of     actions, while copying and reserving memory for a new action of a new flow, the reserve_sfa_size()     function does not return -EMSGSIZE as expected, potentially leading to an out-of-bounds write access. This     flaw allows a local user to crash or potentially escalate their privileges on the system.

    CVE-2022-28893:
    The SUNRPC subsystem in the Linux kernel through 5.17.2 can call xs_xprt_free before ensuring that sockets     are in the intended state.

    CVE-2022-29581:
    Improper Update of Reference Count vulnerability in net/sched of Linux Kernel allows local attacker to     cause privilege escalation to root. This issue affects: Linux Kernel versions prior to 5.18; version 4.14     and later versions.

    CVE-2022-2959:
    A race condition was found in the Linux kernel's watch queue due to a missing lock in pipe_resize_ring().
    The specific flaw exists within the handling of pipe buffers. The issue results from the lack of proper     locking when performing operations on an object. This flaw allows a local user to crash the system or     escalate their privileges on the system.

    CVE-2022-2978:
    A flaw use after free in the Linux kernel NILFS file system was found in the way user triggers function     security_inode_alloc to fail with following call to function nilfs_mdt_destroy. A local user could use     this flaw to crash the system or potentially escalate their privileges on the system.

    CVE-2022-29900:
    Mis-trained branch predictions for return instructions may allow arbitrary speculative code execution     under certain microarchitecture-dependent conditions.

    CVE-2022-29901:
    Intel microprocessor generations 6 to 8 are affected by a new Spectre variant that is able to bypass their     retpoline mitigation in the kernel to leak arbitrary data. An attacker with unprivileged user access can     hijack return instructions to achieve arbitrary speculative code execution under certain     microarchitecture-dependent conditions.

    CVE-2022-32250:
    net/netfilter/nf_tables_api.c in the Linux kernel through 5.18.1 allows a local user (able to create     user/net namespaces) to escalate privileges to root because an incorrect NFT_STATEFUL_EXPR check leads to     a use-after-free.

    CVE-2022-32296:
    The Linux kernel before 5.17.9 allows TCP servers to identify clients by observing what source ports are     used.

    CVE-2022-32981:
    An issue was discovered in the Linux kernel through 5.18.3 on powerpc 32-bit platforms. There is a buffer     overflow in ptrace PEEKUSER and POKEUSER (aka PEEKUSR and POKEUSR) when accessing floating point     registers.

    CVE-2022-33740:
    Linux disk/nic frontends data leaks [This CNA information record relates to multiple CVEs; the text     explains which aspects/vulnerabilities correspond to which CVE.] Linux Block and Network PV device     frontends don't zero memory regions before sharing them with the backend (CVE-2022-26365, CVE-2022-33740).
    Additionally the granularity of the grant table doesn't allow sharing less than a 4K page, leading to     unrelated data residing in the same 4K page as data shared with a backend being accessible by such backend     (CVE-2022-33741, CVE-2022-33742).

    CVE-2022-33741:
    Linux disk/nic frontends data leaks [This CNA information record relates to multiple CVEs; the text     explains which aspects/vulnerabilities correspond to which CVE.] Linux Block and Network PV device     frontends don't zero memory regions before sharing them with the backend (CVE-2022-26365, CVE-2022-33740).
    Additionally the granularity of the grant table doesn't allow sharing less than a 4K page, leading to     unrelated data residing in the same 4K page as data shared with a backend being accessible by such backend     (CVE-2022-33741, CVE-2022-33742).

    CVE-2022-33742:
    Linux disk/nic frontends data leaks [This CNA information record relates to multiple CVEs; the text     explains which aspects/vulnerabilities correspond to which CVE.] Linux Block and Network PV device     frontends don't zero memory regions before sharing them with the backend (CVE-2022-26365, CVE-2022-33740).
    Additionally the granularity of the grant table doesn't allow sharing less than a 4K page, leading to     unrelated data residing in the same 4K page as data shared with a backend being accessible by such backend     (CVE-2022-33741, CVE-2022-33742).

    CVE-2022-33743:
    network backend may cause Linux netfront to use freed SKBs While adding logic to support XDP (eXpress Data     Path), a code label was moved in a way allowing for SKBs having references (pointers) retained for further     processing to nevertheless be freed.

    CVE-2022-33744:
    Linux disk/nic frontends data leaks [This CNA information record relates to multiple CVEs; the text     explains which aspects/vulnerabilities correspond to which CVE.] Linux Block and Network PV device     frontends don't zero memory regions before sharing them with the backend (CVE-2022-26365, CVE-2022-33740).
    Additionally the granularity of the grant table doesn't allow sharing less than a 4K page, leading to     unrelated data residing in the same 4K page as data shared with a backend being accessible by such backend     (CVE-2022-33741, CVE-2022-33742).

    CVE-2022-33981:
    drivers/block/floppy.c in the Linux kernel before 5.17.6 is vulnerable to a denial of service, because of     a concurrency use-after-free flaw after deallocating raw_cmd in the raw_cmd_ioctl function.

    CVE-2022-34918:
    An issue was discovered in the Linux kernel through 5.18.9. A type confusion bug in nft_set_elem_init     (leading to a buffer overflow) could be used by a local attacker to escalate privileges, a different     vulnerability than CVE-2022-32250. (The attacker can obtain root access, but must start with an     unprivileged user namespace to obtain CAP_NET_ADMIN access.) This can be fixed in nft_setelem_parse_data     in net/netfilter/nf_tables_api.c.

    CVE-2022-36123:
    The Linux kernel before 5.18.13 lacks a certain clear operation for the block starting symbol (.bss). This     allows Xen PV guest OS users to cause a denial of service or gain privileges.

    CVE-2022-36879:
    An issue was discovered in the Linux kernel through 5.18.14. xfrm_expand_policies in     net/xfrm/xfrm_policy.c can cause a refcount to be dropped twice.

    CVE-2022-36946:
    nfqnl_mangle in net/netfilter/nfnetlink_queue.c in the Linux kernel through 5.18.14 allows remote     attackers to cause a denial of service (panic) because, in the case of an nf_queue verdict with a one-byte     nfta_payload attribute, an skb_pull can encounter a negative skb->len.

Tenable has extracted the preceding description block directly from the Alibaba Cloud 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 NewStart CGSL host, running version MAIN 6.06, has kernel packages installed that are affected by multiple vulnerabilities:

  - There are use-after-free vulnerabilities in the Linux kernel's net/bluetooth/l2cap_core.c's l2cap_connect     and l2cap_le_connect_req functions which may allow code execution and leaking kernel memory (respectively)     remotely via Bluetooth. A remote attacker could execute code leaking kernel memory via Bluetooth if within     proximity of the victim. We recommend upgrading past commit https://www.google.com/url     https://github.com/torvalds/linux/commit/711f8c3fb3db61897080468586b970c87c61d9e4     https://www.google.com/url (CVE-2022-42896)

  - An issue was discovered in the Linux kernel through 5.18.9. A type confusion bug in nft_set_elem_init     (leading to a buffer overflow) could be used by a local attacker to escalate privileges, a different     vulnerability than CVE-2022-32250. (The attacker can obtain root access, but must start with an     unprivileged user namespace to obtain CAP_NET_ADMIN access.) This can be fixed in nft_setelem_parse_data     in net/netfilter/nf_tables_api.c. (CVE-2022-34918)

  - When sending malicous data to kernel by ioctl cmd FBIOPUT_VSCREENINFO,kernel will write memory out of     bounds. (CVE-2021-33655)

  - When setting font with malicous data by ioctl cmd PIO_FONT,kernel will write memory out of bounds.
    (CVE-2021-33656)

  - A vulnerability was found in the fs/inode.c:inode_init_owner() function logic of the LInux kernel that     allows local users to create files for the XFS file-system with an unintended group ownership and with     group execution and SGID permission bits set, in a scenario where a directory is SGID and belongs to a     certain group and is writable by a user who is not a member of this group. This can lead to excessive     permissions granted in case when they should not. This vulnerability is similar to the previous     CVE-2018-13405 and adds the missed fix for the XFS. (CVE-2021-4037)

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

The version of AOS installed on the remote host is prior to 6.6.2. It is, therefore, affected by multiple vulnerabilities as referenced in the NXSA-AOS-6.6.2 advisory.

  - Mis-trained branch predictions for return instructions may allow arbitrary speculative code execution     under certain microarchitecture-dependent conditions. (CVE-2022-29900)

  - Intel microprocessor generations 6 to 8 are affected by a new Spectre variant that is able to bypass their     retpoline mitigation in the kernel to leak arbitrary data. An attacker with unprivileged user access can     hijack return instructions to achieve arbitrary speculative code execution under certain     microarchitecture-dependent conditions. (CVE-2022-29901)

  - An out-of-bounds memory read flaw was found in the Linux kernel's BPF subsystem in how a user calls the     bpf_tail_call function with a key larger than the max_entries of the map. This flaw allows a local user to     gain unauthorized access to data. (CVE-2022-2905)

  - In the Linux kernel before 5.17.3, fs/io_uring.c has a use-after-free due to a race condition in io_uring     timeouts. This can be triggered by a local user who has no access to any user namespace; however, the race     condition perhaps can only be exploited infrequently. (CVE-2022-29582)

  - An unprivileged write to the file handler flaw in the Linux kernel's control groups and namespaces     subsystem was found in the way users have access to some less privileged process that are controlled by     cgroups and have higher privileged parent process. It is actually both for cgroup2 and cgroup1 versions of     control groups. A local user could use this flaw to crash the system or escalate their privileges on the     system. (CVE-2021-4197)

  - PAC parsing in MIT Kerberos 5 (aka krb5) before 1.19.4 and 1.20.x before 1.20.1 has integer overflows that     may lead to remote code execution (in KDC, kadmind, or a GSS or Kerberos application server) on 32-bit     platforms (which have a resultant heap-based buffer overflow), and cause a denial of service on other     platforms. This occurs in krb5_pac_parse in lib/krb5/krb/pac.c. Heimdal before 7.7.1 has a similar bug.
    (CVE-2022-42898)

  - A flaw was found in the Linux kernel's KVM when attempting to set a SynIC IRQ. This issue makes it     possible for a misbehaving VMM to write to SYNIC/STIMER MSRs, causing a NULL pointer dereference. This     flaw allows an unprivileged local attacker on the host to issue specific ioctl calls, causing a kernel     oops condition that results in a denial of service. (CVE-2022-2153)

  - The JsonErrorReportValve in Apache Tomcat 8.5.83, 9.0.40 to 9.0.68 and 10.1.0-M1 to 10.1.1 did not escape     the type, message or description values. In some circumstances these are constructed from user provided     data and it was therefore possible for users to supply values that invalidated or manipulated the JSON     output. (CVE-2022-45143)

  - libexpat before 2.4.9 has a use-after-free in the doContent function in xmlparse.c. (CVE-2022-40674)

  - Vulnerability in the Oracle Java SE, Oracle GraalVM Enterprise Edition product of Oracle Java SE     (component: Serialization). Supported versions that are affected are Oracle Java SE: 8u351, 8u351-perf;
    Oracle GraalVM Enterprise Edition: 20.3.8 and 21.3.4. Easily exploitable vulnerability allows     unauthenticated attacker with network access via multiple protocols to compromise Oracle Java SE, Oracle     GraalVM Enterprise Edition. Successful attacks of this vulnerability can result in unauthorized update,     insert or delete access to some of Oracle Java SE, Oracle GraalVM Enterprise Edition accessible data.
    Note: This vulnerability applies to Java deployments, typically in clients running sandboxed Java Web     Start applications or sandboxed Java applets, that load and run untrusted code (e.g., code that comes from     the internet) and rely on the Java sandbox for security. This vulnerability does not apply to Java     deployments, typically in servers, that load and run only trusted code (e.g., code installed by an     administrator). (CVE-2023-21830)

  - Vulnerability in the Oracle Java SE, Oracle GraalVM Enterprise Edition product of Oracle Java SE     (component: Sound). Supported versions that are affected are Oracle Java SE: 8u351, 8u351-perf, 11.0.17,     17.0.5, 19.0.1; Oracle GraalVM Enterprise Edition: 20.3.8, 21.3.4 and 22.3.0. Difficult to exploit     vulnerability allows unauthenticated attacker with network access via multiple protocols to compromise     Oracle Java SE, Oracle GraalVM Enterprise Edition. Successful attacks of this vulnerability can result in     unauthorized update, insert or delete access to some of Oracle Java SE, Oracle GraalVM Enterprise Edition     accessible data. Note: This vulnerability applies to Java deployments, typically in clients running     sandboxed Java Web Start applications or sandboxed Java applets, that load and run untrusted code (e.g.,     code that comes from the internet) and rely on the Java sandbox for security. This vulnerability does not     apply to Java deployments, typically in servers, that load and run only trusted code (e.g., code installed     by an administrator). (CVE-2023-21843)

  - multipath-tools 0.7.0 through 0.9.x before 0.9.2 allows local users to obtain root access, as exploited     alone or in conjunction with CVE-2022-41973. Local users able to write to UNIX domain sockets can bypass     access controls and manipulate the multipath setup. This can lead to local privilege escalation to root.
    This occurs because an attacker can repeat a keyword, which is mishandled because arithmetic ADD is used     instead of bitwise OR. (CVE-2022-41974)

  - A flaw was found in KVM. When updating a guest's page table entry, vm_pgoff was improperly used as the     offset to get the page's pfn. As vaddr and vm_pgoff are controllable by user-mode processes, this flaw     allows unprivileged local users on the host to write outside the userspace region and potentially corrupt     the kernel, resulting in a denial of service condition. (CVE-2022-1158)

  - The Linux kernel before 5.17.2 mishandles seccomp permissions. The PTRACE_SEIZE code path allows attackers     to bypass intended restrictions on setting the PT_SUSPEND_SECCOMP flag. (CVE-2022-30594)

  - A kernel information leak flaw was identified in the scsi_ioctl function in drivers/scsi/scsi_ioctl.c in     the Linux kernel. This flaw allows a local attacker with a special user privilege (CAP_SYS_ADMIN or     CAP_SYS_RAWIO) to create issues with confidentiality. (CVE-2022-0494)

  - With shadow paging enabled, the INVPCID instruction results in a call to kvm_mmu_invpcid_gva. If INVPCID     is executed with CR0.PG=0, the invlpg callback is not set and the result is a NULL pointer dereference.
    (CVE-2022-1789)

  - A use-after-free flaw was found in fs/ext4/namei.c:dx_insert_block() in the Linux kernel's filesystem sub-     component. This flaw allows a local attacker with a user privilege to cause a denial of service.
    (CVE-2022-1184)

  - An issue was discovered in the Linux kernel through 5.18.14. xfrm_expand_policies in     net/xfrm/xfrm_policy.c can cause a refcount to be dropped twice. (CVE-2022-36879)

  - nfqnl_mangle in net/netfilter/nfnetlink_queue.c in the Linux kernel through 5.18.14 allows remote     attackers to cause a denial of service (panic) because, in the case of an nf_queue verdict with a one-byte     nfta_payload attribute, an skb_pull can encounter a negative skb->len. (CVE-2022-36946)

  - Non-transparent sharing of return predictor targets between contexts in some Intel(R) Processors may allow     an authorized user to potentially enable information disclosure via local access. (CVE-2022-26373)

  - It was discovered that when exec'ing from a non-leader thread, armed POSIX CPU timers would be left on a     list but freed, leading to a use-after-free. (CVE-2022-2585)

  - mm/rmap.c in the Linux kernel before 5.19.7 has a use-after-free related to leaf anon_vma double reuse.
    (CVE-2022-42703)

  - An issue was found in the Linux kernel in nf_conntrack_irc where the message handling can be confused and     incorrectly matches the message. A firewall may be able to be bypassed when users are using unencrypted     IRC with nf_conntrack_irc configured. (CVE-2022-2663)

  - It was discovered that the cls_route filter implementation in the Linux kernel would not remove an old     filter from the hashtable before freeing it if its handle had the value 0. (CVE-2022-2588)

  - A race condition was found the Linux kernel in perf_event_open() which can be exploited by an unprivileged     user to gain root privileges. The bug allows to build several exploit primitives such as kernel address     information leak, arbitrary execution, etc. (CVE-2022-1729)

  - A use-after-free flaw was found in the Linux kernel's FUSE filesystem in the way a user triggers write().
    This flaw allows a local user to gain unauthorized access to data from the FUSE filesystem, resulting in     privilege escalation. (CVE-2022-1011)

  - Vulnerability in the Oracle Java SE, Oracle GraalVM Enterprise Edition product of Oracle Java SE     (component: Security). Supported versions that are affected are Oracle Java SE: 8u341, 8u345-perf,     11.0.16.1, 17.0.4.1, 19; Oracle GraalVM Enterprise Edition: 20.3.7, 21.3.3 and 22.2.0. Difficult to     exploit vulnerability allows unauthenticated attacker with network access via multiple protocols to     compromise Oracle Java SE, Oracle GraalVM Enterprise Edition. Successful attacks of this vulnerability can     result in unauthorized update, insert or delete access to some of Oracle Java SE, Oracle GraalVM     Enterprise Edition accessible data. Note: This vulnerability applies to Java deployments, typically in     clients running sandboxed Java Web Start applications or sandboxed Java applets, that load and run     untrusted code (e.g., code that comes from the internet) and rely on the Java sandbox for security. This     vulnerability can also be exploited by using APIs in the specified Component, e.g., through a web service     which supplies data to the APIs. (CVE-2022-21619)

  - Vulnerability in the Oracle Java SE, Oracle GraalVM Enterprise Edition product of Oracle Java SE     (component: JNDI). Supported versions that are affected are Oracle Java SE: 8u341, 8u345-perf, 11.0.16.1,     17.0.4.1, 19; Oracle GraalVM Enterprise Edition: 20.3.7, 21.3.3 and 22.2.0. Difficult to exploit     vulnerability allows unauthenticated attacker with network access via multiple protocols to compromise     Oracle Java SE, Oracle GraalVM Enterprise Edition. Successful attacks of this vulnerability can result in     unauthorized update, insert or delete access to some of Oracle Java SE, Oracle GraalVM Enterprise Edition     accessible data. Note: This vulnerability applies to Java deployments, typically in clients running     sandboxed Java Web Start applications or sandboxed Java applets, that load and run untrusted code (e.g.,     code that comes from the internet) and rely on the Java sandbox for security. This vulnerability can also     be exploited by using APIs in the specified Component, e.g., through a web service which supplies data to     the APIs. (CVE-2022-21624)

  - Vulnerability in the Oracle Java SE, Oracle GraalVM Enterprise Edition product of Oracle Java SE     (component: Security). Supported versions that are affected are Oracle Java SE: 8u341, 8u345-perf,     11.0.16.1; Oracle GraalVM Enterprise Edition: 20.3.7, 21.3.3 and 22.2.0. Easily exploitable vulnerability     allows unauthenticated attacker with network access via HTTPS to compromise Oracle Java SE, Oracle GraalVM     Enterprise Edition. Successful attacks of this vulnerability can result in unauthorized ability to cause a     partial denial of service (partial DOS) of Oracle Java SE, Oracle GraalVM Enterprise Edition. Note: This     vulnerability applies to Java deployments, typically in clients running sandboxed Java Web Start     applications or sandboxed Java applets, that load and run untrusted code (e.g., code that comes from the     internet) and rely on the Java sandbox for security. This vulnerability can also be exploited by using     APIs in the specified Component, e.g., through a web service which supplies data to the APIs.
    (CVE-2022-21626)

  - Vulnerability in the Oracle Java SE, Oracle GraalVM Enterprise Edition product of Oracle Java SE     (component: Lightweight HTTP Server). Supported versions that are affected are Oracle Java SE: 8u341,     8u345-perf, 11.0.16.1, 17.0.4.1, 19; Oracle GraalVM Enterprise Edition: 20.3.7, 21.3.3 and 22.2.0. Easily     exploitable vulnerability allows unauthenticated attacker with network access via HTTP to compromise     Oracle Java SE, Oracle GraalVM Enterprise Edition. Successful attacks of this vulnerability can result in     unauthorized ability to cause a partial denial of service (partial DOS) of Oracle Java SE, Oracle GraalVM     Enterprise Edition. Note: This vulnerability applies to Java deployments, typically in clients running     sandboxed Java Web Start applications or sandboxed Java applets, that load and run untrusted code (e.g.,     code that comes from the internet) and rely on the Java sandbox for security. This vulnerability does not     apply to Java deployments, typically in servers, that load and run only trusted code (e.g., code installed     by an administrator). (CVE-2022-21628)

  - In Sudo before 1.9.12p2, the sudoedit (aka -e) feature mishandles extra arguments passed in the user-     provided environment variables (SUDO_EDITOR, VISUAL, and EDITOR), allowing a local attacker to append     arbitrary entries to the list of files to process. This can lead to privilege escalation. Affected     versions are 1.8.0 through 1.9.12.p1. The problem exists because a user-specified editor may contain a
    -- argument that defeats a protection mechanism, e.g., an EDITOR='vim -- /path/to/extra/file' value.
    (CVE-2023-22809)

  - When sending malicous data to kernel by ioctl cmd FBIOPUT_VSCREENINFO,kernel will write memory out of     bounds. (CVE-2021-33655)

  - The Linux kernel before 5.18.13 lacks a certain clear operation for the block starting symbol (.bss). This     allows Xen PV guest OS users to cause a denial of service or gain privileges. (CVE-2022-36123)

  - Incomplete cleanup of microarchitectural fill buffers on some Intel(R) Processors may allow an     authenticated user to potentially enable information disclosure via local access. (CVE-2022-21125)

  - A use-after-free flaw was found in the Linux kernel's io_uring subsystem in the way a user sets up a ring     with IORING_SETUP_IOPOLL with more than one task completing submissions on this ring. This flaw allows a     local user to crash or escalate their privileges on the system. (CVE-2022-1786)

  - A memory leak problem was found in the TCP source port generation algorithm in net/ipv4/tcp.c due to the     small table perturb size. This flaw may allow an attacker to information leak and may cause a denial of     service problem. (CVE-2022-1012)

  - The SUNRPC subsystem in the Linux kernel through 5.17.2 can call xs_xprt_free before ensuring that sockets     are in the intended state. (CVE-2022-28893)

  - An out-of-bounds read flaw was found in the Linux kernel's TeleTYpe subsystem. The issue occurs in how a     user triggers a race condition using ioctls TIOCSPTLCK and TIOCGPTPEER and TIOCSTI and TCXONC with leakage     of memory in the flush_to_ldisc function. This flaw allows a local user to crash the system or read     unauthorized random data from memory. (CVE-2022-1462)

  - BIND 9.11.0 -> 9.11.36 9.12.0 -> 9.16.26 9.17.0 -> 9.18.0 BIND Supported Preview Editions: 9.11.4-S1 ->     9.11.36-S1 9.16.8-S1 -> 9.16.26-S1 Versions of BIND 9 earlier than those shown - back to 9.1.0, including     Supported Preview Editions - are also believed to be affected but have not been tested as they are EOL.
    The cache could become poisoned with incorrect records leading to queries being made to the wrong servers,     which might also result in false information being returned to clients. (CVE-2021-25220)

  - By flooding the target resolver with queries exploiting this flaw an attacker can significantly impair the     resolver's performance, effectively denying legitimate clients access to the DNS resolution service.
    (CVE-2022-2795)

  - A vulnerability was found in the fs/inode.c:inode_init_owner() function logic of the LInux kernel that     allows local users to create files for the XFS file-system with an unintended group ownership and with     group execution and SGID permission bits set, in a scenario where a directory is SGID and belongs to a     certain group and is writable by a user who is not a member of this group. This can lead to excessive     permissions granted in case when they should not. This vulnerability is similar to the previous     CVE-2018-13405 and adds the missed fix for the XFS. (CVE-2021-4037)

  - Improper Update of Reference Count vulnerability in net/sched of Linux Kernel allows local attacker to     cause privilege escalation to root. This issue affects: Linux Kernel versions prior to 5.18; version 4.14     and later versions. (CVE-2022-29581)

  - mm/mremap.c in the Linux kernel before 5.13.3 has a use-after-free via a stale TLB because an rmap lock is     not held during a PUD move. (CVE-2022-41222)

  - A flaw was found in the Linux kernel. The existing KVM SEV API has a vulnerability that allows a non-root     (host) user-level application to crash the host kernel by creating a confidential guest VM instance in AMD     CPU that supports Secure Encrypted Virtualization (SEV). (CVE-2022-0171)

  - In bdi_put and bdi_unregister of backing-dev.c, there is a possible memory corruption due to a use after     free. This could lead to local escalation of privilege with System execution privileges needed. User     interaction is not needed for exploitation.Product: AndroidVersions: Android kernelAndroid ID:
    A-182815710References: Upstream kernel (CVE-2022-20158)

  - Product: AndroidVersions: Android kernelAndroid ID: A-224546354References: Upstream kernel     (CVE-2022-20368)

  - By spoofing the target resolver with responses that have a malformed ECDSA signature, an attacker can     trigger a small memory leak. It is possible to gradually erode available memory to the point where named     crashes for lack of resources. (CVE-2022-38177)

  - By spoofing the target resolver with responses that have a malformed EdDSA signature, an attacker can     trigger a small memory leak. It is possible to gradually erode available memory to the point where named     crashes for lack of resources. (CVE-2022-38178)

  - When setting font with malicous data by ioctl cmd PIO_FONT,kernel will write memory out of bounds.
    (CVE-2021-33656)

  - A flaw was found in hw. Mis-trained branch predictions for return instructions may allow arbitrary     speculative code execution under certain microarchitecture-dependent conditions. (CVE-2022-28693)

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 11 host has packages installed that are affected by multiple vulnerabilities as referenced in the dsa-5161 advisory.

    Several vulnerabilities have been discovered in the Linux kernel that may lead to a privilege escalation,     denial of service or information leaks. CVE-2022-0494 The scsi_ioctl() was susceptible to an information     leak only exploitable by users with CAP_SYS_ADMIN or CAP_SYS_RAWIO capabilities. CVE-2022-0854 Ali Haider     discovered a potential information leak in the DMA subsystem. On systems where the swiotlb feature is     needed, this might allow a local user to read sensitive information. CVE-2022-1012 The randomisation when     calculating port offsets in the IP implementation was enhanced. CVE-2022-1729 Norbert Slusarek discovered     a race condition in the perf subsystem which could result in local privilege escalation to root. The     default settings in Debian prevent exploitation unless more permissive settings have been applied in the     kernel.perf_event_paranoid sysctl. CVE-2022-1786 Kyle Zeng discovered a use-after-free in the io_uring     subsystem which way result in local privilege escalation to root. CVE-2022-1789 / CVE-2022-1852 Yongkang     Jia, Gaoning Pan and Qiuhao Li discovered two NULL pointer dereferences in KVM's CPU instruction handling,     resulting in denial of service. CVE-2022-1966 Aaron Adams discovered a use-after-free in Netfilter which     may result in local privilege escalation to root. CVE-2022-1972 Ziming Zhang discovered an out-of-bound     write in Netfilter which may result in local privilege escalation to root. CVE-2022-1974 / CVE-2022-1975     Duoming Zhou discovered that the NFC netlink interface was suspectible to denial of service.
    CVE-2022-21499 It was discovered that the kernel debugger could be used to bypass UEFI Secure Boot     restrictions. CVE-2022-28893 Felix Fu discovered a use-after-free in the implementation of the Remote     Procedure Call (SunRPC) protocol, which could result in denial of service or an information leak. For the     stable distribution (bullseye), these problems have been fixed in version 5.10.120-1. 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.

The version of kernel installed on the remote host is prior to 5.10.118-111.515. It is, therefore, affected by multiple vulnerabilities as referenced in the ALAS2KERNEL-5.10-2022-014 advisory.

    In the Linux kernel, the following vulnerability has been resolved:

    dm: fix mempool NULL pointer race when completing IO (CVE-2021-47435)

    A kernel information leak flaw was identified in the scsi_ioctl function in drivers/scsi/scsi_ioctl.c in     the Linux kernel. This flaw allows a local attacker with a special user privilege (CAP_SYS_ADMIN or     CAP_SYS_RAWIO) to create issues with confidentiality. (CVE-2022-0494)

    A memory leak flaw was found in the Linux kernel's DMA subsystem, in the way a user calls DMA_FROM_DEVICE.
    This flaw allows a local user to read random memory from the kernel space. (CVE-2022-0854)

    perf: Fix sys_perf_event_open() race against self (CVE-2022-1729)

    io_uring: always use original task when preparing req identity (CVE-2022-1786)

    In (TBD) of (TBD), there is a possible way to corrupt kernel memory due to a use after free. This could     lead to local escalation of privilege with no additional execution privileges needed. User interaction is     not needed for exploitation.Product: AndroidVersions: Android kernelAndroid ID: A-220738351References:
    Upstream kernel (CVE-2022-20568)

    kernel/bpf/verifier.c in the Linux kernel through 5.15.14 allows local users to gain privileges because of     the availability of pointer arithmetic via certain *_OR_NULL pointer types. (CVE-2022-23222)

    An integer coercion error was found in the openvswitch kernel module. Given a sufficiently large number of     actions, while copying and reserving memory for a new action of a new flow, the reserve_sfa_size()     function does not return -EMSGSIZE as expected, potentially leading to an out-of-bounds write access. This     flaw allows a local user to crash or potentially escalate their privileges on the system. (CVE-2022-2639)

    The SUNRPC subsystem in the Linux kernel through 5.17.2 can call xs_xprt_free before ensuring that sockets     are in the intended state. (CVE-2022-28893)

    Improper Update of Reference Count vulnerability in net/sched of Linux Kernel allows local attacker to     cause privilege escalation to root. This issue affects: Linux Kernel versions prior to 5.18; version 4.14     and later versions. (CVE-2022-29581)

    An issue was discovered in drivers/input/input.c in the Linux kernel before 5.17.10. An attacker can cause     a denial of service (panic) because input_set_capability mishandles the situation in which an event code     falls outside of a bitmap. (CVE-2022-48619)

    A use-after-free flaw was found in vhost_net_set_backend in drivers/vhost/net.c in virtio network     subcomponent in the Linux kernel due to a double fget. This flaw could allow a local attacker to crash the     system, and could even lead to a kernel information leak problem. (CVE-2023-1838)

    A use-after-free flaw was found in vmxnet3_rq_alloc_rx_buf in drivers/net/vmxnet3/vmxnet3_drv.c in     VMware's vmxnet3 ethernet NIC driver in the Linux Kernel. This issue could allow a local attacker to crash     the system due to a double-free while cleaning up vmxnet3_rq_cleanup_all, which could also lead to a     kernel information leak problem. (CVE-2023-4387)

    A NULL pointer dereference flaw was found in vmxnet3_rq_cleanup in drivers/net/vmxnet3/vmxnet3_drv.c in     the networking sub-component in vmxnet3 in the Linux Kernel. This issue may allow a local attacker with     normal user privilege to cause a denial of service due to a missing sanity check during cleanup.
    (CVE-2023-4459)

Tenable has extracted the preceding description block directly from the tested product 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 Oracle Linux 7 / 8 host has packages installed that are affected by multiple vulnerabilities as referenced in the ELSA-2022-9426 advisory.

    - io_uring: always use original task when preparing req identity (Jens Axboe)       [Orabug: 34186552]  {CVE-2022-1786}

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 Oracle Linux 7 / 8 host has packages installed that are affected by multiple vulnerabilities as referenced in the ELSA-2022-9425 advisory.

    - io_uring: always use original task when preparing req identity (Jens Axboe)  [Orabug: 34186552]     {CVE-2022-1786}

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.

ID	Name	Product	Family	Severity
267629	Unity Linux 20.1070e Security Update: kernel (UTSA-2025-414479)	Nessus	Unity Linux Local Security Checks	high
252965	Photon OS 4.0: Linux PHSA-2025-4.0-0844	Nessus	PhotonOS Local Security Checks	high
244605	Linux Distros Unpatched Vulnerability : CVE-2022-1786	Nessus	Misc.	high
236488	Alibaba Cloud Linux 3 : 0158: cloud-kernel bugfix, enhancement and (ALINUX3-SA-2022:0158)	Nessus	Alibaba Cloud Linux Local Security Checks	high
203172	Photon OS 4.0: Linux PHSA-2022-4.0-0201	Nessus	PhotonOS Local Security Checks	high
187326	NewStart CGSL MAIN 6.06 : kernel Multiple Vulnerabilities (NS-SA-2023-0083)	Nessus	NewStart CGSL Local Security Checks	high
174898	Nutanix AOS : Multiple Vulnerabilities (NXSA-AOS-6.6.2)	Nessus	Misc.	high
162159	Debian DSA-5161-1 : linux - security update	Nessus	Debian Local Security Checks	high
162002	Amazon Linux 2 : kernel (ALASKERNEL-5.10-2022-014)	Nessus	Amazon Linux Local Security Checks	high
161486	Oracle Linux 7 / 8 : Unbreakable Enterprise kernel-container (ELSA-2022-9426)	Nessus	Oracle Linux Local Security Checks	high
161485	Oracle Linux 7 / 8 : Unbreakable Enterprise kernel (ELSA-2022-9425)	Nessus	Oracle Linux Local Security Checks	high

Detections

Analytics

CVE-2022-1786

high

Tenable Plugins

high

high

high

high

high

high

high

high

high

high

high