The Unity Linux 20 host has a package installed that is affected by a vulnerability as referenced in the UTSA-2026-001961 advisory.

    arch/x86/kernel/cpu/perf_event_intel.c in the Linux kernel before 3.8.9, when the Performance Events     Subsystem is enabled, specifies an incorrect bitmask, which allows local users to cause a denial of     service (general protection fault and system crash) by attempting to set a reserved bit.

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 information leak was discovered in the Linux kernel when inotify is used to monitor the /dev/ptmx device. A local user could exploit this flaw to discover keystroke timing and potentially discover sensitive information like password length. (CVE-2013-0160)

An information leak was discovered in the Linux kernel's tkill and tgkill system calls when used from compat processes. A local user could exploit this flaw to examine potentially sensitive kernel memory. (CVE-2013-2141)

A flaw was discovered in the Linux kernel's perf events subsystem for Intel Sandy Bridge and Ivy Bridge processors. A local user could exploit this flaw to cause a denial of service (system crash).
(CVE-2013-2146)

An information leak was discovered in the Linux kernel's crypto API. A local user could exploit this flaw to examine potentially sensitive information from the kernel's stack memory. (CVE-2013-3076)

An information leak was discovered in the Linux kernel's rcvmsg path for ATM (Asynchronous Transfer Mode). A local user could exploit this flaw to examine potentially sensitive information from the kernel's stack memory. (CVE-2013-3222)

An information leak was discovered in the Linux kernel's recvmsg path for ax25 address family. A local user could exploit this flaw to examine potentially sensitive information from the kernel's stack memory. (CVE-2013-3223)

An information leak was discovered in the Linux kernel's recvmsg path for the bluetooth address family. A local user could exploit this flaw to examine potentially sensitive information from the kernel's stack memory. (CVE-2013-3224)

An information leak was discovered in the Linux kernel's bluetooth rfcomm protocol support. A local user could exploit this flaw to examine potentially sensitive information from the kernel's stack memory. (CVE-2013-3225)

An information leak was discovered in the Linux kernel's CAIF protocol implementation. A local user could exploit this flaw to examine potentially sensitive information from the kernel's stack memory.
(CVE-2013-3227)

An information leak was discovered in the Linux kernel's IRDA (infrared) support subsystem. A local user could exploit this flaw to examine potentially sensitive information from the kernel's stack memory. (CVE-2013-3228)

An information leak was discovered in the Linux kernel's s390 - z/VM support. A local user could exploit this flaw to examine potentially sensitive information from the kernel's stack memory. (CVE-2013-3229)

An information leak was discovered in the Linux kernel's l2tp (Layer Two Tunneling Protocol) implementation. A local user could exploit this flaw to examine potentially sensitive information from the kernel's stack memory. (CVE-2013-3230)

An information leak was discovered in the Linux kernel's llc (Logical Link Layer 2) support. A local user could exploit this flaw to examine potentially sensitive information from the kernel's stack memory.
(CVE-2013-3231)

An information leak was discovered in the Linux kernel's receive message handling for the netrom address family. A local user could exploit this flaw to obtain sensitive information from the kernel's stack memory. (CVE-2013-3232)

An information leak was discovered in the Linux kernel's nfc (near field communication) support. A local user could exploit this flaw to examine potentially sensitive information from the kernel's stack memory. (CVE-2013-3233)

An information leak was discovered in the Linux kernel's Rose X.25 protocol layer. A local user could exploit this flaw to examine potentially sensitive information from the kernel's stack memory.
(CVE-2013-3234)

An information leak was discovered in the Linux kernel's TIPC (Transparent Inter Process Communication) protocol implementation. A local user could exploit this flaw to examine potentially sensitive information from the kernel's stack memory. (CVE-2013-3235).

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

This update fixes the following security issues :

  - A flaw was found in the way the Linux kernel's Stream     Control Transmission Protocol (SCTP) implementation     handled duplicate cookies. If a local user queried SCTP     connection information at the same time a remote     attacker has initialized a crafted SCTP connection to     the system, it could trigger a NULL pointer dereference,     causing the system to crash. (CVE-2013-2206, Important)

  - It was found that the fix for CVE-2012-3552 released via     SLSA-2012:1304 introduced an invalid free flaw in the     Linux kernel's TCP/IP protocol suite implementation. A     local, unprivileged user could use this flaw to corrupt     kernel memory via crafted sendmsg() calls, allowing them     to cause a denial of service or, potentially, escalate     their privileges on the system. (CVE-2013-2224,     Important)

  - A flaw was found in the Linux kernel's Performance     Events implementation. On systems with certain Intel     processors, a local, unprivileged user could use this     flaw to cause a denial of service by leveraging the perf     subsystem to write into the reserved bits of the     OFFCORE_RSP_0 and OFFCORE_RSP_1 model-specific     registers. (CVE-2013-2146, Moderate)

  - An invalid pointer dereference flaw was found in the     Linux kernel's TCP/IP protocol suite implementation. A     local, unprivileged user could use this flaw to crash     the system or, potentially, escalate their privileges on     the system by using sendmsg() with an IPv6 socket     connected to an IPv4 destination. (CVE-2013-2232,     Moderate)

  - Information leak flaws in the Linux kernel's Bluetooth     implementation could allow a local, unprivileged user to     leak kernel memory to user- space. (CVE-2012-6544, Low)

  - An information leak flaw in the Linux kernel could allow     a privileged, local user to leak kernel memory to     user-space. (CVE-2013-2237, Low)

The system must be rebooted for this update to take effect.

Updated kernel-rt packages that fix several security issues and multiple bugs are now available for Red Hat Enterprise MRG 2.3.

The Red Hat Security Response Team has rated this update as having important security impact. Common Vulnerability Scoring System (CVSS) base scores, which give detailed severity ratings, are available for each vulnerability from the CVE links in the References section.

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

This update fixes the following security issues :

* A heap-based buffer overflow flaw was found in the Linux kernel's iSCSI target subsystem. A remote attacker could use a specially crafted iSCSI request to cause a denial of service on a system or, potentially, escalate their privileges on that system. (CVE-2013-2850, Important)

* A flaw was found in the Linux kernel's Performance Events implementation. On systems with certain Intel processors, a local, unprivileged user could use this flaw to cause a denial of service by leveraging the perf subsystem to write into the reserved bits of the OFFCORE_RSP_0 and OFFCORE_RSP_1 model-specific registers.
(CVE-2013-2146, Moderate)

* An invalid pointer dereference flaw was found in the Linux kernel's TCP/IP protocol suite implementation. A local, unprivileged user could use this flaw to crash the system or, potentially, escalate their privileges on the system by using sendmsg() with an IPv6 socket connected to an IPv4 destination. (CVE-2013-2232, Moderate)

* Two flaws were found in the way the Linux kernel's TCP/IP protocol suite implementation handled IPv6 sockets that used the UDP_CORK option. A local, unprivileged user could use these flaws to cause a denial of service. (CVE-2013-4162, CVE-2013-4163, Moderate)

* A flaw was found in the Linux kernel's Chipidea USB driver. A local, unprivileged user could use this flaw to cause a denial of service.
(CVE-2013-2058, Low)

* Information leak flaws in the Linux kernel could allow a privileged, local user to leak kernel memory to user-space. (CVE-2013-2147, CVE-2013-2164, CVE-2013-2234, CVE-2013-2237, Low)

* Information leak flaws in the Linux kernel could allow a local, unprivileged user to leak kernel memory to user-space. (CVE-2013-2141, CVE-2013-2148, Low)

* A format string flaw was found in the Linux kernel's block layer. A privileged, local user could potentially use this flaw to escalate their privileges to kernel level (ring0). (CVE-2013-2851, Low)

* A format string flaw was found in the b43_do_request_fw() function in the Linux kernel's b43 driver implementation. A local user who is able to specify the 'fwpostfix' b43 module parameter could use this flaw to cause a denial of service or, potentially, escalate their privileges. (CVE-2013-2852, Low)

* A NULL pointer dereference flaw was found in the Linux kernel's ftrace and function tracer implementations. A local user who has the CAP_SYS_ADMIN capability could use this flaw to cause a denial of service. (CVE-2013-3301, Low)

Red Hat would like to thank Kees Cook for reporting CVE-2013-2850, CVE-2013-2851, and CVE-2013-2852; and Hannes Frederic Sowa for reporting CVE-2013-4162 and CVE-2013-4163.

This update also fixes the following bugs :

* The following drivers have been updated, fixing a number of bugs:
myri10ge, bna, enic, mlx4, bgmac, bcma, cxgb3, cxgb4, qlcnic, r8169, be2net, e100, e1000, e1000e, igb, ixgbe, brcm80211, cpsw, pch_gbe, bfin_mac, bnx2x, bnx2, cnic, tg3, and sfc. (BZ#974138)

* The realtime kernel was not built with the CONFIG_NET_DROP_WATCH kernel configuration option enabled. As such, attempting to run the dropwatch command resulted in the following error :

Unable to find NET_DM family, dropwatch can't work Cleaning up on socket creation error

With this update, the realtime kernel is built with the CONFIG_NET_DROP_WATCH option, allowing dropwatch to work as expected.
(BZ#979417)

Users should upgrade to these updated packages, which upgrade the kernel-rt kernel to version kernel-rt-3.6.11.5-rt37, and correct these issues. The system must be rebooted for this update to take effect.

ID	Name	Product	Family	Published	Updated	Severity
286443	Unity Linux 20.1060e / 20.1070e Security Update: kernel (UTSA-2026-001961)	Nessus	Unity Linux Local Security Checks	1/15/2026	1/15/2026	medium
66903	Ubuntu 12.04 LTS : linux-lts-quantal vulnerabilities (USN-1880-1)	Nessus	Ubuntu Local Security Checks	6/16/2013	9/19/2019	medium
69503	Scientific Linux Security Update : kernel on SL6.x i386/x86_64 (20130827)	Nessus	Scientific Linux Local Security Checks	8/29/2013	1/14/2021	medium
76665	RHEL 6 : MRG (RHSA-2013:1264)	Nessus	Red Hat Local Security Checks	7/22/2014	1/14/2021	high
72325	SuSE 11.3 Security Update : Linux kernel (SAT Patch Numbers 8823 / 8827)	Nessus	SuSE Local Security Checks	2/5/2014	1/19/2021	high

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