USN-8439-1

Stonejiajia, Shir Tamari and Sagi Tzadik discovered that the OverlayFS implementation in the Ubuntu Linux kernel did not properly perform permission checks in certain situations. A local attacker could possibly use this to gain elevated privileges. (CVE-2023-2640)

Shir Tamari and Sagi Tzadik discovered that the OverlayFS implementation in the Ubuntu Linux kernel did not properly perform permission checks in certain situations. A local attacker could possibly use this to gain elevated privileges. (CVE-2023-32629)

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:

• Network drivers;
• NVME drivers;
• SMB network file system;
• Netfilter;
• io_uring subsystem; (CVE-2024-35862, CVE-2024-50060, CVE-2026-23112, CVE-2026-23273, CVE-2026-23274, CVE-2026-23351)