Test ID:	1.3.6.1.4.1.25623.1.1.12.2023.6072.1
Category:	Ubuntu Local Security Checks
Title:	Ubuntu: Security Advisory (USN-6072-1)
Summary:	The remote host is missing an update for the 'linux-oem-6.0' package(s) announced via the USN-6072-1 advisory.
Description:	Summary: The remote host is missing an update for the 'linux-oem-6.0' package(s) announced via the USN-6072-1 advisory. Vulnerability Insight: It was discovered that the Traffic-Control Index (TCINDEX) implementation in the Linux kernel did not properly perform filter deactivation in some situations. A local attacker could possibly use this to gain elevated privileges. Please note that with the fix for this CVE, kernel support for the TCINDEX classifier has been removed. (CVE-2023-1829) Lin Ma discovered a race condition in the io_uring subsystem in the Linux kernel, leading to a null pointer dereference vulnerability. A local attacker could use this to cause a denial of service (system crash). (CVE-2023-0468) It was discovered that the OverlayFS implementation in the Linux kernel did not properly handle copy up operation in some conditions. A local attacker could possibly use this to gain elevated privileges. (CVE-2023-0386) It was discovered that a race condition existed in the Xen transport layer implementation for the 9P file system protocol in the Linux kernel, leading to a use-after-free vulnerability. A local attacker could use this to cause a denial of service (guest crash) or expose sensitive information (guest kernel memory). (CVE-2023-1859) Kyle Zeng discovered that the ATM VC queuing discipline implementation in the Linux kernel contained a type confusion vulnerability in some situations. An attacker could use this to cause a denial of service (system crash). (CVE-2023-23455) Lianhui Tang discovered that the MPLS implementation in the Linux kernel did not properly handle certain sysctl allocation failure conditions, leading to a double-free vulnerability. An attacker could use this to cause a denial of service or possibly execute arbitrary code. (CVE-2023-26545) Affected Software/OS: 'linux-oem-6.0' package(s) on Ubuntu 22.04. Solution: Please install the updated package(s). CVSS Score: 6.8 CVSS Vector: AV:L/AC:L/Au:S/C:C/I:C/A:C
Cross-Ref:	Common Vulnerability Exposure (CVE) ID: CVE-2023-0386 Debian Security Information: DSA-5402 (Google Search) https://www.debian.org/security/2023/dsa-5402 http://packetstormsecurity.com/files/173087/Kernel-Live-Patch-Security-Notice-LSN-0095-1.html https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=4f11ada10d0a https://lists.debian.org/debian-lts-announce/2023/06/msg00008.html Common Vulnerability Exposure (CVE) ID: CVE-2023-0468 https://bugzilla.redhat.com/show_bug.cgi?id=2164024 Common Vulnerability Exposure (CVE) ID: CVE-2023-1829 https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=8c710f75256bb3cf05ac7b1672c82b92c43f3d28 https://kernel.dance/#8c710f75256bb3cf05ac7b1672c82b92c43f3d28 https://lists.debian.org/debian-lts-announce/2023/05/msg00005.html https://lists.debian.org/debian-lts-announce/2023/05/msg00006.html Common Vulnerability Exposure (CVE) ID: CVE-2023-1859 https://lore.kernel.org/all/20230313090002.3308025-1-zyytlz.wz@163.com/ Common Vulnerability Exposure (CVE) ID: CVE-2023-23455 Debian Security Information: DSA-5324 (Google Search) https://www.debian.org/security/2023/dsa-5324 https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=a2965c7be0522eaa18808684b7b82b248515511b https://www.openwall.com/lists/oss-security/2023/01/10/1 https://www.openwall.com/lists/oss-security/2023/01/10/4 https://lists.debian.org/debian-lts-announce/2023/03/msg00000.html Common Vulnerability Exposure (CVE) ID: CVE-2023-26545 https://cdn.kernel.org/pub/linux/kernel/v6.x/ChangeLog-6.1.13 https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=fda6c89fe3d9aca073495a664e1d5aea28cd4377 https://github.com/torvalds/linux/commit/fda6c89fe3d9aca073495a664e1d5aea28cd4377
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