CVE-2026-99245

Beschreibung

In the Linux kernel, the following vulnerability has been resolved: KEYS: Fix key_reject_and_link() race with keyring restriction The restrict_link check in key_reject_and_link() is done before taking the keyring semaphore, racing with a concurrent keyring_restrict() that installs the restriction while holding the semaphore in write mode. Move the check to after __key_link_lock(), so it is done under the semaphore, matching the pattern used in __key_create_or_update().

Referenzen

• https://git.kernel.org/stable/c/01835d3a3709be508ae5209f806640336c48e395
• https://git.kernel.org/stable/c/0b157166e612b70f98a332b6c7be7eac6f8e9593
• https://git.kernel.org/stable/c/19dfc37c9deefa69dc805d01d35d1f2fd7902e33
• https://git.kernel.org/stable/c/23a9163cc40b4996ba1e20533b1210a1a0bee416
• https://git.kernel.org/stable/c/2c3d907dd15f4e30d4c35b9f7a7a5078de6a1b1f
• https://git.kernel.org/stable/c/5787887eba0f0979a8c86d03a8e891395d5c24ad
• https://git.kernel.org/stable/c/6fc0c818b1cac66003e937c8a0d3bfb23fd3f130
• https://git.kernel.org/stable/c/72f367417a6aee56821d0b0114cfd2b080008b63
• https://git.kernel.org/stable/c/c7956ec99ad0e173720d95de9fa788bb077809f2