Linux kernel (Xilinx) vulnerabilities

Summary

Josh Eads, Kristoffer Janke, Eduardo Vela Nava, Tavis Ormandy, and Matteo Rizzo discovered that some AMD Zen processors did not properly verify the signature of CPU microcode. This flaw is known as EntrySign. A privileged attacker could possibly use this issue to cause load malicious CPU microcode causing loss of integrity and confidentiality. (CVE-2024-36347) Qualys discovered that several vulnerabilities existed in the AppArmor Linux kernel Security Module (LSM). An unprivileged local attacker could use these issues to load, replace, and remove arbitrary AppArmor profiles causing denial of service, exposure of sensitive information (kernel memory), local privilege escalation, or possibly escape a container. (LP: #2143853, CVE-2026-23268, CVE-2026-23269, CVE-2026-23403, CVE-2026-23404, CVE-2026-23405, CVE-2026-23406, CVE-2026-23407, CVE-2026-23408, CVE-2026-23409, CVE-2026-23410, CVE-2026-23411) 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: - ARM64 architecture; - MIPS architecture; - Nios II architecture; - PA-RISC architecture; - PowerPC architecture; - RISC-V architecture; - S390 architecture; - Sun Sparc architecture; - User-Mode Linux (UML); - x86 architecture; - Xtensa architecture; - Block layer subsystem; - Cryptographic API; - Compute A Affected Ubuntu releases: 24.04. CVEs: CVE-2025-68288, CVE-2025-68756, CVE-2025-71149, CVE-2025-39808, CVE-2025-71084, CVE-2025-39969, CVE-2025-71112, CVE-2025-71148….