The remote Redhat Enterprise Linux 8 host has packages installed that are affected by multiple vulnerabilities as referenced in the RHSA-2019:3517 advisory.

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

    Security Fix(es):

    * kernel: nfs: use-after-free in svc_process_common() (CVE-2018-16884)

    * Kernel: vhost_net: infinite loop while receiving packets leads to DoS (CVE-2019-3900)

    * Kernel: page cache side channel attacks (CVE-2019-5489)

    * hardware: bluetooth: BR/EDR encryption key negotiation attacks (KNOB) (CVE-2019-9506)

    * kernel: Heap overflow in mwifiex_uap_parse_tail_ies function in     drivers/net/wireless/marvell/mwifiex/ie.c (CVE-2019-10126)

    * Kernel: KVM: OOB memory access via mmio ring buffer (CVE-2019-14821)

    * kernel: Information Disclosure in crypto_report_one in crypto/crypto_user.c (CVE-2018-19854)

    * kernel: usb: missing size check in the __usb_get_extra_descriptor() leading to DoS (CVE-2018-20169)

    * kernel: Heap address information leak while using L2CAP_GET_CONF_OPT (CVE-2019-3459)

    * kernel: Heap address information leak while using L2CAP_PARSE_CONF_RSP (CVE-2019-3460)

    * kernel: SCTP socket buffer memory leak leading to denial of service (CVE-2019-3874)

    * kernel: denial of service vector through vfio DMA mappings (CVE-2019-3882)

    * kernel: null-pointer dereference in hci_uart_set_flow_control (CVE-2019-10207)

    * kernel: fix race condition between mmget_not_zero()/get_task_mm() and core dumping (CVE-2019-11599)

    * kernel: fs/ext4/extents.c leads to information disclosure (CVE-2019-11833)

    * kernel: sensitive information disclosure from kernel stack memory via HIDPCONNADD command     (CVE-2019-11884)

    * kernel: use-after-free in arch/x86/lib/insn-eval.c (CVE-2019-13233)

    * kernel: memory leak in register_queue_kobjects() in net/core/net-sysfs.c leads to denial of service     (CVE-2019-15916)

    * kernel: Linux stack ASLR implementation Integer overflow (CVE-2015-1593)

    * kernel: oob memory read in hso_probe in drivers/net/usb/hso.c (CVE-2018-19985)

    * Kernel: KVM: leak of uninitialized stack contents to guest (CVE-2019-7222)

    * Kernel: net: weak IP ID generation leads to remote device tracking (CVE-2019-10638)

    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.

    Additional Changes:

    For detailed information on changes in this release, see the Red Hat Enterprise Linux 8.1 Release Notes     linked from 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 these issues but has instead relied only on the application's self-reported version number.

The remote Ubuntu 18.04 LTS host has a package installed that is affected by multiple vulnerabilities as referenced in the USN-3931-1 advisory.

    M. Vefa Bicakci and Andy Lutomirski discovered that the kernel did not properly set up all arguments to an     error handler callback used when running as a paravirtualized guest. An unprivileged attacker in a     paravirtualized guest VM could use this to cause a denial of service (guest VM crash). (CVE-2018-14678)

    It was discovered that the KVM implementation in the Linux kernel on ARM 64bit processors did not properly     handle some ioctls. An attacker with the privilege to create KVM-based virtual machines could use this to     cause a denial of service (host system crash) or execute arbitrary code in the host. (CVE-2018-18021)

    Mathias Payer and Hui Peng discovered a use-after-free vulnerability in the Advanced Linux Sound     Architecture (ALSA) subsystem. A physically proximate attacker could use this to cause a denial of service     (system crash). (CVE-2018-19824)

    Shlomi Oberman, Yuli Shapiro, and Ran Menscher discovered an information leak in the Bluetooth     implementation of the Linux kernel. An attacker within Bluetooth range could use this to expose sensitive     information (kernel memory). (CVE-2019-3459, CVE-2019-3460)

    Jann Horn discovered that the KVM implementation in the Linux kernel contained a use-after-free     vulnerability. An attacker in a guest VM with access to /dev/kvm could use this to cause a denial of     service (guest VM crash). (CVE-2019-6974)

    Jim Mattson and Felix Wilhelm discovered a use-after-free vulnerability in the KVM subsystem of the Linux     kernel, when using nested virtual machines. A local attacker in a guest VM could use this to cause a     denial of service (system crash) or possibly execute arbitrary code in the host system. (CVE-2019-7221)

    Felix Wilhelm discovered that an information leak vulnerability existed in the KVM subsystem of the Linux     kernel, when nested virtualization is used. A local attacker could use this to expose sensitive     information (host system memory to a guest VM). (CVE-2019-7222)

    Jann Horn discovered that the eBPF implementation in the Linux kernel was insufficiently hardened against     Spectre V1 attacks. A local attacker could use this to expose sensitive information. (CVE-2019-7308)

    It was discovered that a use-after-free vulnerability existed in the user- space API for crypto (af_alg)     implementation in the Linux kernel. A local attacker could use this to cause a denial of service (system     crash) or possibly execute arbitrary code. (CVE-2019-8912)

    It was discovered that the Linux kernel did not properly deallocate memory when handling certain errors     while reading files. A local attacker could use this to cause a denial of service (excessive memory     consumption). (CVE-2019-8980)

    Jann Horn discovered that the mmap implementation in the Linux kernel did not properly check for the mmap     minimum address in some situations. A local attacker could use this to assist exploiting a kernel NULL     pointer dereference vulnerability. (CVE-2019-9213)

Tenable has extracted the preceding description block directly from the Ubuntu 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 SUSE Linux Enterprise 12 SP3 Azure kernel was updated to 4.4.176 to receive various security and bugfixes.

The following security bugs were fixed :

CVE-2019-2024: A use-after-free when disconnecting a source was fixed which could lead to crashes. bnc#1129179).

CVE-2019-9213: expand_downwards in mm/mmap.c lacked a check for the mmap minimum address, which made it easier for attackers to exploit kernel NULL pointer dereferences on non-SMAP platforms. This is related to a capability check for the wrong task (bnc#1128166).

CVE-2019-6974: kvm_ioctl_create_device in virt/kvm/kvm_main.c mishandled reference counting because of a race condition, leading to a use-after-free. (bnc#1124728)

CVE-2019-3459, CVE-2019-3460: The Bluetooth stack suffered from two remote information leak vulnerabilities in the code that handles incoming L2cap configuration packets (bsc#1120758).

CVE-2019-7221: Fixed a use-after-free vulnerability in the KVM hypervisor related to the emulation of a preemption timer, allowing an guest user/process to crash the host kernel. (bsc#1124732).

CVE-2019-7222: Fixed an information leakage in the KVM hypervisor related to handling page fault exceptions, which allowed a guest user/process to use this flaw to leak the host's stack memory contents to a guest (bsc#1124735).

CVE-2017-18249: The add_free_nid function in fs/f2fs/node.c did not properly track an allocated nid, which allowed local users to cause a denial of service (race condition) or possibly have unspecified other impact via concurrent threads (bnc#1087036).

The update package also includes non-security fixes. See advisory for details.

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

The remote CentOS Linux 8 host has packages installed that are affected by multiple vulnerabilities as referenced in the CESA-2019:3517 advisory.

  - kernel: Linux stack ASLR implementation Integer overflow (CVE-2015-1593)

  - kernel: nfs: use-after-free in svc_process_common() (CVE-2018-16884)

  - kernel: Information Disclosure in crypto_report_one in crypto/crypto_user.c (CVE-2018-19854)

  - kernel: oob memory read in hso_probe in drivers/net/usb/hso.c (CVE-2018-19985)

  - kernel: usb: missing size check in the __usb_get_extra_descriptor() leading to DoS (CVE-2018-20169)

  - kernel: Heap overflow in mwifiex_uap_parse_tail_ies function in drivers/net/wireless/marvell/mwifiex/ie.c     (CVE-2019-10126)

  - kernel: null-pointer dereference in hci_uart_set_flow_control (CVE-2019-10207)

  - Kernel: net: weak IP ID generation leads to remote device tracking (CVE-2019-10638)

  - kernel: fix race condition between mmget_not_zero()/get_task_mm() and core dumping (CVE-2019-11599)

  - kernel: fs/ext4/extents.c leads to information disclosure (CVE-2019-11833)

  - kernel: sensitive information disclosure from kernel stack memory via HIDPCONNADD command (CVE-2019-11884)

  - kernel: unchecked kstrdup of fwstr in drm_load_edid_firmware leads to denial of service (CVE-2019-12382)

  - kernel: use-after-free in arch/x86/lib/insn-eval.c (CVE-2019-13233)

  - kernel: denial of service in arch/powerpc/kernel/signal_32.c and arch/powerpc/kernel/signal_64.c via     sigreturn() system call (CVE-2019-13648)

  - Kernel: KVM: OOB memory access via mmio ring buffer (CVE-2019-14821)

  - kernel: out-of-bounds array access in __xfrm_policy_unlink (CVE-2019-15666)

  - kernel: memory leak in register_queue_kobjects() in net/core/net-sysfs.c leads to denial of service     (CVE-2019-15916)

  - kernel: memory leak in genl_register_family() in net/netlink/genetlink.c (CVE-2019-15921)

  - kernel: null pointer dereference in drivers/net/ethernet/intel/fm10k/fm10k_main.c (CVE-2019-15924)

  - kernel: Memory leak in sit_init_net() in net/ipv6/sit.c (CVE-2019-16994)

  - kernel: Heap address information leak while using L2CAP_GET_CONF_OPT (CVE-2019-3459)

  - kernel: Heap address information leak while using L2CAP_PARSE_CONF_RSP (CVE-2019-3460)

  - kernel: SCTP socket buffer memory leak leading to denial of service (CVE-2019-3874)

  - kernel: denial of service vector through vfio DMA mappings (CVE-2019-3882)

  - Kernel: vhost_net: infinite loop while receiving packets leads to DoS (CVE-2019-3900)

  - Kernel: page cache side channel attacks (CVE-2019-5489)

  - Kernel: KVM: leak of uninitialized stack contents to guest (CVE-2019-7222)

  - hardware: bluetooth: BR/EDR encryption key negotiation attacks (KNOB) (CVE-2019-9506)

  - kernel: use-after-free read in napi_gro_frags() in the Linux kernel (CVE-2020-10720)

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

The remote SUSE Linux SLES11 host has packages installed that are affected by multiple vulnerabilities as referenced in the SUSE-SU-2019:14127-1 advisory.

  - An issue was discovered in the Linux kernel before 4.20. There is a race condition in smp_task_timedout()     and smp_task_done() in drivers/scsi/libsas/sas_expander.c, leading to a use-after-free. (CVE-2018-20836)

  - Linux kernel versions 4.9+ can be forced to make very expensive calls to tcp_collapse_ofo_queue() and     tcp_prune_ofo_queue() for every incoming packet which can lead to a denial of service. (CVE-2018-5390)

  - An issue was discovered in dlpar_parse_cc_property in arch/powerpc/platforms/pseries/dlpar.c in the Linux     kernel through 5.1.6. There is an unchecked kstrdup of prop->name, which might allow an attacker to cause     a denial of service (NULL pointer dereference and system crash). (CVE-2019-12614)

  - A heap address information leak while using L2CAP_GET_CONF_OPT was discovered in the Linux kernel before     5.1-rc1. (CVE-2019-3459)

  - A heap data infoleak in multiple locations including L2CAP_PARSE_CONF_RSP was found in the Linux kernel     before 5.1-rc1. (CVE-2019-3460)

  - A flaw that allowed an attacker to corrupt memory and possibly escalate privileges was found in the     mwifiex kernel module while connecting to a malicious wireless network. (CVE-2019-3846)

  - A double-free can happen in idr_remove_all() in lib/idr.c in the Linux kernel 2.6 branch. An unprivileged     local attacker can use this flaw for a privilege escalation or for a system crash and a denial of service     (DoS). (CVE-2019-3896)

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

The Unity Linux 20 host has a package installed that is affected by a vulnerability as referenced in the UTSA-2026-004388 advisory.

    A heap address information leak while using L2CAP_GET_CONF_OPT was discovered in the Linux kernel before     5.1-rc1.

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.

ID	Name	Product	Family	Published	Updated	Severity
130547	RHEL 8 : kernel (RHSA-2019:3517)	Nessus	Red Hat Local Security Checks	11/6/2019	4/15/2025	critical
123678	Ubuntu 18.04 LTS : Linux kernel vulnerabilities (USN-3931-1)	Nessus	Ubuntu Local Security Checks	4/3/2019	8/27/2024	high
123927	SUSE SLES12 Security Update : kernel (SUSE-SU-2019:0901-1)	Nessus	SuSE Local Security Checks	4/9/2019	5/20/2022	high
145665	CentOS 8 : kernel (CESA-2019:3517)	Nessus	CentOS Local Security Checks	1/29/2021	12/5/2022	critical
150512	SUSE SLES11 Security Update : kernel (SUSE-SU-2019:14127-1)	Nessus	SuSE Local Security Checks	6/10/2021	12/27/2023	high
287976	Unity Linux 20.1060e / 20.1070e Security Update: kernel (UTSA-2026-004388)	Nessus	Unity Linux Local Security Checks	1/16/2026	1/16/2026	medium

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