Test ID:	1.3.6.1.4.1.25623.1.1.12.2022.5635.1
Category:	Ubuntu Local Security Checks
Title:	Ubuntu: Security Advisory (USN-5635-1)
Summary:	The remote host is missing an update for the 'linux-gkeop' package(s) announced via the USN-5635-1 advisory.
Description:	Summary: The remote host is missing an update for the 'linux-gkeop' package(s) announced via the USN-5635-1 advisory. Vulnerability Insight: It was discovered that the framebuffer driver on the Linux kernel did not verify size limits when changing font or screen size, leading to an out-of- bounds write. A local attacker could use this to cause a denial of service (system crash) or possibly execute arbitrary code. (CVE-2021-33655) Duoming Zhou discovered that race conditions existed in the timer handling implementation of the Linux kernel's Rose X.25 protocol layer, resulting in use-after-free vulnerabilities. A local attacker could use this to cause a denial of service (system crash). (CVE-2022-2318) Roger Pau Monne discovered that the Xen virtual block driver in the Linux kernel did not properly initialize memory pages to be used for shared communication with the backend. A local attacker could use this to expose sensitive information (guest kernel memory). (CVE-2022-26365) Roger Pau Monne discovered that the Xen paravirtualization frontend in the Linux kernel did not properly initialize memory pages to be used for shared communication with the backend. A local attacker could use this to expose sensitive information (guest kernel memory). (CVE-2022-33740) It was discovered that the Xen paravirtualization frontend in the Linux kernel incorrectly shared unrelated data when communicating with certain backends. A local attacker could use this to cause a denial of service (guest crash) or expose sensitive information (guest kernel memory). (CVE-2022-33741, CVE-2022-33742) Jan Beulich discovered that the Xen network device frontend driver in the Linux kernel incorrectly handled socket buffers (skb) references when communicating with certain backends. A local attacker could use this to cause a denial of service (guest crash). (CVE-2022-33743) Oleksandr Tyshchenko discovered that the Xen paravirtualization platform in the Linux kernel on ARM platforms contained a race condition in certain situations. An attacker in a guest VM could use this to cause a denial of service in the host OS. (CVE-2022-33744) It was discovered that the virtio RPMSG bus driver in the Linux kernel contained a double-free vulnerability in certain error conditions. A local attacker could possibly use this to cause a denial of service (system crash). (CVE-2022-34494, CVE-2022-34495) Domingo Dirutigliano and Nicola Guerrera discovered that the netfilter subsystem in the Linux kernel did not properly handle rules that truncated packets below the packet header size. When such rules are in place, a remote attacker could possibly use this to cause a denial of service (system crash). (CVE-2022-36946) Affected Software/OS: 'linux-gkeop' package(s) on Ubuntu 22.04. Solution: Please install the updated package(s). CVSS Score: 4.9 CVSS Vector: AV:L/AC:L/Au:N/C:N/I:N/A:C
Cross-Ref:	Common Vulnerability Exposure (CVE) ID: CVE-2021-33655 Debian Security Information: DSA-5191 (Google Search) https://www.debian.org/security/2022/dsa-5191 https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=086ff84617185393a0bbf25830c4f36412a7d3f4 https://lists.debian.org/debian-lts-announce/2022/10/msg00000.html http://www.openwall.com/lists/oss-security/2022/07/19/2 Common Vulnerability Exposure (CVE) ID: CVE-2022-2318 https://github.com/torvalds/linux/commit/9cc02ede696272c5271a401e4f27c262359bc2f6 Common Vulnerability Exposure (CVE) ID: CVE-2022-26365 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/IGFTRZ66KQYTSYIRT5FRHF5D6O72NWOP/ https://xenbits.xenproject.org/xsa/advisory-403.txt http://www.openwall.com/lists/oss-security/2022/07/05/6 Common Vulnerability Exposure (CVE) ID: CVE-2022-33740 Common Vulnerability Exposure (CVE) ID: CVE-2022-33741 Common Vulnerability Exposure (CVE) ID: CVE-2022-33742 Common Vulnerability Exposure (CVE) ID: CVE-2022-33743 https://xenbits.xenproject.org/xsa/advisory-405.txt http://www.openwall.com/lists/oss-security/2022/07/05/5 Common Vulnerability Exposure (CVE) ID: CVE-2022-33744 https://xenbits.xenproject.org/xsa/advisory-406.txt http://www.openwall.com/lists/oss-security/2022/07/05/4 Common Vulnerability Exposure (CVE) ID: CVE-2022-34494 https://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.18.4 https://github.com/torvalds/linux/commit/1680939e9ecf7764fba8689cfb3429c2fe2bb23c Common Vulnerability Exposure (CVE) ID: CVE-2022-34495 https://github.com/torvalds/linux/commit/c2eecefec5df1306eafce28ccdf1ca159a552ecc Common Vulnerability Exposure (CVE) ID: CVE-2022-36946 Debian Security Information: DSA-5207 (Google Search) https://www.debian.org/security/2022/dsa-5207 https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=99a63d36cb3ed5ca3aa6fcb64cffbeaf3b0fb164 https://marc.info/?l=netfilter-devel&m=165883202007292&w=2 https://lists.debian.org/debian-lts-announce/2022/09/msg00011.html
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