Ubuntu security

USN-5485-1: Linux kernel vulnerabilities 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) Source: USN-5485-1: Linux kernel vulnerabilities

USN-5484-1: Linux kernel vulnerabilities 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 [ more… ]

USN-5482-1: SPIP vulnerabilities It was discovered that SPIP incorrectly validated inputs. An authenticated attacker could possibly use this issue to execute arbitrary code. This issue only affected Ubuntu 18.04 LTS. (CVE-2020-28984) Charles Fol and Théo Gordyjan discovered that SPIP is vulnerable to Cross Site Scripting (XSS). If a user were tricked into browsing a malicious SVG file, an attacker could possibly exploit this issue to execute arbitrary code. This issue was only fixed in Ubuntu 21.10. (CVE-2021-44118, CVE-2021-44120, CVE-2021-44122, CVE-2021-44123) It was discovered that SPIP incorrectly handled certain forms. A remote authenticated editor could possibly use this issue to execute arbitrary code, and a remote unauthenticated attacker could possibly use this issue to obtain sensitive information. (CVE-2022-26846, CVE-2022-26847) Source: USN-5482-1: SPIP vulnerabilities

USN-5483-1: Exempi vulnerabilities It was discovered that Exempi incorrectly handled certain media files. If a user or automated system were tricked into opening a specially crafted file, a remote attacker could cause Exempi to stop responding or crash, resulting in a denial of service, or possibly execute arbitrary code. Source: USN-5483-1: Exempi vulnerabilities

LSN-0087-1: Kernel Live Patch Security Notice Aaron Adams discovered that the netfilter subsystem in the Linux kernel did not properly handle the removal of stateful expressions in some situations, leading to a use-after-free vulnerability. A local attacker could use this to cause a denial of service (system crash) or execute arbitrary code.(CVE-2022-1966) Ziming Zhang discovered that the netfilter subsystem in the Linux kernel did not properly validate sets with multiple ranged fields. A local attacker could use this to cause a denial of service or execute arbitrary code.(CVE-2022-1972) Source: LSN-0087-1: Kernel Live Patch Security Notice