Test ID:	1.3.6.1.4.1.25623.1.1.12.2022.5484.1
Category:	Ubuntu Local Security Checks
Title:	Ubuntu: Security Advisory (USN-5484-1)
Summary:	The remote host is missing an update for the 'linux' package(s) announced via the USN-5484-1 advisory.
Description:	Summary: The remote host is missing an update for the 'linux' package(s) announced via the USN-5484-1 advisory. Vulnerability Insight: It was discovered that the Linux kernel did not properly restrict access to the kernel debugger when booted in secure boot environments. A privileged attacker could use this to bypass UEFI Secure Boot restrictions. (CVE-2022-21499) It was discovered that a race condition existed in the network scheduling subsystem of the Linux kernel, leading to a use-after-free vulnerability. A local attacker could use this to cause a denial of service (system crash) or possibly execute arbitrary code. (CVE-2021-39713) It was discovered that some Intel processors did not completely perform cleanup actions on multi-core shared buffers. A local attacker could possibly use this to expose sensitive information. (CVE-2022-21123) It was discovered that some Intel processors did not completely perform cleanup actions on microarchitectural fill buffers. A local attacker could possibly use this to expose sensitive information. (CVE-2022-21125) It was discovered that some Intel processors did not properly perform cleanup during specific special register write operations. A local attacker could possibly use this to expose sensitive information. (CVE-2022-21166) Affected Software/OS: 'linux' package(s) on Ubuntu 14.04. Solution: Please install the updated package(s). CVSS Score: 6.9 CVSS Vector: AV:L/AC:M/Au:N/C:C/I:C/A:C
Cross-Ref:	Common Vulnerability Exposure (CVE) ID: CVE-2021-39713 http://packetstormsecurity.com/files/167386/Kernel-Live-Patch-Security-Notice-LSN-0086-1.html https://source.android.com/security/bulletin/pixel/2022-03-01 https://lists.debian.org/debian-lts-announce/2022/07/msg00000.html Common Vulnerability Exposure (CVE) ID: CVE-2022-21123 Debian Security Information: DSA-5173 (Google Search) https://www.debian.org/security/2022/dsa-5173 Debian Security Information: DSA-5178 (Google Search) https://www.debian.org/security/2022/dsa-5178 Debian Security Information: DSA-5184 (Google Search) https://www.debian.org/security/2022/dsa-5184 https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/T4P2KJYL74KGLHE4JZETVW7PZH6ZIABA/ https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/RKRXZ4LHGCGMOG24ZCEJNY6R2BTS4S2Q/ https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/FHTEW3RXU2GW6S3RCPQG4VNCZGI3TOSV/ https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/MCVOMHBQRH4KP7IN6U24CW7F2D2L5KBS/ https://security.gentoo.org/glsa/202208-23 https://www.intel.com/content/www/us/en/security-center/advisory/intel-sa-00615.html http://www.openwall.com/lists/oss-security/2022/06/16/1 Common Vulnerability Exposure (CVE) ID: CVE-2022-21125 Common Vulnerability Exposure (CVE) ID: CVE-2022-21166 Common Vulnerability Exposure (CVE) ID: CVE-2022-21499 Debian Security Information: DSA-5161 (Google Search) https://www.debian.org/security/2022/dsa-5161 http://packetstormsecurity.com/files/168191/Kernel-Live-Patch-Security-Notice-LSN-0089-1.html https://git.kernel.org/linus/eadb2f47a3ced5c64b23b90fd2a3463f63726066
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