{"id":"CVE-2026-99245","title":"KEYS: Fix key_reject_and_link() race with keyring restriction","summary":"In the Linux kernel, the following vulnerability has been resolved:\n\nKEYS: Fix key_reject_and_link() race with keyring restriction\n\nThe restrict_link check in key_reject_and_link() is done before taking\nthe keyring semaphore, racing with…","severity":"none","vendor":"Linux","product":"Linux","affected":["Linux >= 5ac7eace2d00eab5ae0e9fdee63e38aee6001f7c < c7956ec99ad0e173720d95de9fa788bb077809f2","Linux >= 5ac7eace2d00eab5ae0e9fdee63e38aee6001f7c < 2c3d907dd15f4e30d4c35b9f7a7a5078de6a1b1f","Linux >= 5ac7eace2d00eab5ae0e9fdee63e38aee6001f7c < 72f367417a6aee56821d0b0114cfd2b080008b63","Linux >= 5ac7eace2d00eab5ae0e9fdee63e38aee6001f7c < 19dfc37c9deefa69dc805d01d35d1f2fd7902e33","Linux >= 5ac7eace2d00eab5ae0e9fdee63e38aee6001f7c < 5787887eba0f0979a8c86d03a8e891395d5c24ad","Linux >= 5ac7eace2d00eab5ae0e9fdee63e38aee6001f7c < 01835d3a3709be508ae5209f806640336c48e395","Linux >= 5ac7eace2d00eab5ae0e9fdee63e38aee6001f7c < 6fc0c818b1cac66003e937c8a0d3bfb23fd3f130","Linux >= 5ac7eace2d00eab5ae0e9fdee63e38aee6001f7c < 23a9163cc40b4996ba1e20533b1210a1a0bee416","Linux >= 5ac7eace2d00eab5ae0e9fdee63e38aee6001f7c < 0b157166e612b70f98a332b6c7be7eac6f8e9593","Linux 4.7"],"published":"2026-11-03","updated":"2026-11-03","sourceUpdated":"2026-11-03T19:13:10.812Z","source":"CVEORG","sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-99245","references":[{"url":"https://git.kernel.org/stable/c/c7956ec99ad0e173720d95de9fa788bb077809f2"},{"url":"https://git.kernel.org/stable/c/2c3d907dd15f4e30d4c35b9f7a7a5078de6a1b1f"},{"url":"https://git.kernel.org/stable/c/72f367417a6aee56821d0b0114cfd2b080008b63"},{"url":"https://git.kernel.org/stable/c/19dfc37c9deefa69dc805d01d35d1f2fd7902e33"},{"url":"https://git.kernel.org/stable/c/5787887eba0f0979a8c86d03a8e891395d5c24ad"},{"url":"https://git.kernel.org/stable/c/01835d3a3709be508ae5209f806640336c48e395"},{"url":"https://git.kernel.org/stable/c/6fc0c818b1cac66003e937c8a0d3bfb23fd3f130"},{"url":"https://git.kernel.org/stable/c/23a9163cc40b4996ba1e20533b1210a1a0bee416"},{"url":"https://git.kernel.org/stable/c/0b157166e612b70f98a332b6c7be7eac6f8e9593"}],"tags":["cve.org"],"epss":0.00223,"epssPercentile":0.12968,"ingestedAt":"2026-11-05T20:33:06.391Z","slug":"CVE-2026-99245","body":"## Overview\n\nIn the Linux kernel, the following vulnerability has been resolved:\n\nKEYS: Fix key_reject_and_link() race with keyring restriction\n\nThe restrict_link check in key_reject_and_link() is done before taking\nthe keyring semaphore, racing with a concurrent keyring_restrict()\nthat installs the restriction while holding the semaphore in write\nmode.\n\nMove the check to after __key_link_lock(), so it is done under the\nsemaphore, matching the pattern used in __key_create_or_update().\n\n## Affected\n\n- `Linux >= 5ac7eace2d00eab5ae0e9fdee63e38aee6001f7c < c7956ec99ad0e173720d95de9fa788bb077809f2`\n- `Linux >= 5ac7eace2d00eab5ae0e9fdee63e38aee6001f7c < 2c3d907dd15f4e30d4c35b9f7a7a5078de6a1b1f`\n- `Linux >= 5ac7eace2d00eab5ae0e9fdee63e38aee6001f7c < 72f367417a6aee56821d0b0114cfd2b080008b63`\n- `Linux >= 5ac7eace2d00eab5ae0e9fdee63e38aee6001f7c < 19dfc37c9deefa69dc805d01d35d1f2fd7902e33`\n- `Linux >= 5ac7eace2d00eab5ae0e9fdee63e38aee6001f7c < 5787887eba0f0979a8c86d03a8e891395d5c24ad`\n- `Linux >= 5ac7eace2d00eab5ae0e9fdee63e38aee6001f7c < 01835d3a3709be508ae5209f806640336c48e395`\n- `Linux >= 5ac7eace2d00eab5ae0e9fdee63e38aee6001f7c < 6fc0c818b1cac66003e937c8a0d3bfb23fd3f130`\n- `Linux >= 5ac7eace2d00eab5ae0e9fdee63e38aee6001f7c < 23a9163cc40b4996ba1e20533b1210a1a0bee416`\n- `Linux >= 5ac7eace2d00eab5ae0e9fdee63e38aee6001f7c < 0b157166e612b70f98a332b6c7be7eac6f8e9593`\n- `Linux 4.7`\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.","depth":"sunlit","depthScore":3,"depthScoreParts":{"impact":2.8,"likelihood":0,"exploitation":0,"ransomware":0},"changes":[]}