The USN-8279-1 advisory addresses multiple Linux kernel vulnerabilities, including a high-severity flaw (CVE-2026-31431, CVSS 7.8) in the algif_aead module known as "Copy Fail," which allows a local attacker to escalate privileges or potentially escape a container via improper handling of in-place cryptographic operations. Affected versions include kernel series 5.10 through 6.7, with specific fixed versions provided for each major branch (e.g., 5.10.254, 6.1.170). The update also patches other high and medium-severity issues across subsystems like Netfilter, io_uring, and TLS, requiring immediate patching to the specified kernel versions.
It was discovered that the Linux kernel algif_aead module did not properly handle in-place cryptographic operations. This flaw is known as Copy Fail. A local attacker could use this to escalate privileges, or possibly escape a container. (CVE-2026-31431) Several security issues were discovered in the Linux kernel. An attacker could possibly use these to compromise the system. This update corrects flaws in the following subsystems: - Cryptographic API; - Ethernet bonding driver; - SMB network file system; - Netfilter; - io_uring subsystem; - Packet sockets; - TLS protocol; (CVE-2024-35862, CVE-2024-50060, CVE-2026-23274, CVE-2026-23351, CVE-2026-31419, CVE-2026-31504, CVE-2026-31533, CVE-2026-43033, CVE-2026-43077, CVE-2026-43078)