{"id":"CVE-2026-99051","revision":null,"records":[{"revision":"cc8966b2ea9840228193ac4cef0cf64a","observedAt":"2026-10-24T16:17:04.479+00:00","statement":{"source":"cve-program","id":"CVE-2026-99051","aliases":[],"title":"fsverity: RCU-delay the freeing of struct fsverity_info","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nfsverity: RCU-delay the freeing of struct fsverity_info\n\n__fsverity_get_info() calls rhashtable_lookup_fast(), which just uses\nrcu_read_lock() and doesn't directly synchronize with\nfsverity_remove_info().\n\nFor the same inode this isn't a problem: its fsverity_info is removed\nonly at inode eviction time or upon failure to enable verity, when the\ninode no longer needs its fsverity_info and it will no longer be\naccessed via that inode.\n\nHowever, this is broken and can cause a use-after-free for concurrent\n__fsverity_get_info() for *different* inodes.  Those rely on following\nfsverity_info::rhash_head in the rhashtable under rcu_read_lock() only.\nThey also use fsverity_info::inode to do the key comparison.\n\nFix this by RCU-delaying the freeing of 'struct fsverity_info' after\nit's been removed from the rhashtable.","state":0,"publishedAt":"2026-10-23T12:22:30.37+00:00","modifiedAt":"2026-10-24T14:10:12.469+00:00","affected":[{"ecosystem":"Vendor product","name":"Linux","ranges":[],"versions":[],"rawVersionEvidence":"{\n                    \"product\": \"Linux\",\n                    \"vendor\": \"Linux\",\n                    \"defaultStatus\": \"unaffected\",\n                    \"repo\": \"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\",\n                    \"programFiles\": [\n                        \"fs/verity/fsverity_private.h\",\n                        \"fs/verity/open.c\"\n                    ],\n                    \"versions\": [\n                        {\n                            \"version\": \"f77f281b61183a5c0b87e6a4d101c70bd32c1c79\",\n                            \"lessThan\": \"fa84f091a8e7fc46fd29834496fab9739dd4c8dc\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"f77f281b61183a5c0b87e6a4d101c70bd32c1c79\",\n                            \"lessThan\": \"e58c3805ed325fe2d4ae2dd467c0486cc860b733\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        }\n                    ]\n                }"},{"ecosystem":"Vendor product","name":"Linux","ranges":[],"versions":[],"rawVersionEvidence":"{\n                    \"product\": \"Linux\",\n                    \"vendor\": \"Linux\",\n                    \"defaultStatus\": \"affected\",\n                    \"repo\": \"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\",\n                    \"programFiles\": [\n                        \"fs/verity/fsverity_private.h\",\n                        \"fs/verity/open.c\"\n                    ],\n                    \"versions\": [\n                        {\n                            \"version\": \"7.0\",\n                            \"status\": \"affected\"\n                        },\n                        {\n                            \"version\": \"0\",\n                            \"lessThan\": \"7.0\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"7.2.11\",\n                            \"lessThanOrEqual\": \"7.2.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"7.3\",\n                            \"lessThanOrEqual\": \"*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"original_commit_for_fix\"\n                        }\n                    ]\n                }"}],"metrics":[{"system":"CVSS 3.1","vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","score":7.8,"severity":"HIGH"}],"references":["https://git.kernel.org/stable/c/fa84f091a8e7fc46fd29834496fab9739dd4c8dc","https://git.kernel.org/stable/c/e58c3805ed325fe2d4ae2dd467c0486cc860b733"],"sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-99051","license":"CVE Program Terms of Use","key":"cve-program:CVE-2026-99051","identifiers":["CVE-2026-99051"]},"retained":false,"historicalAffected":[]}],"coverage":[{"source":"cisa-kev:global","scope":"Complete CISA KEV catalog; all vendors. Missing entries do not establish absence of exploitation.","generation":"2026-10-26T00:46:57.9533087+00:00","complete":true,"records":1756,"lastAttemptAt":"2026-10-26T00:46:57.9533087+00:00","lastSuccessAt":"2026-10-26T00:46:58.1070069+00:00","error":null,"lastVerifiedAt":"2026-10-26T00:46:58.1070087+00:00","snapshotPublishedAt":null,"importing":false,"stagedRecords":0,"checkedIdentifiers":null,"expectedIdentifiers":null},{"source":"cve-program","scope":"Official CVE Program baseline and cumulative hourly delta; all vendors, published and rejected records","generation":"cve-1a687ad2a0b90150aa7d97c9f39e63de695ae2db23e31ebc28df1492c461b23c-8739c76e681f900923b900c9df0ef75cf421d39cabb54650c4b9ad19b6a76d85","complete":true,"records":414048,"lastAttemptAt":"2026-10-26T00:46:56.7781981+00:00","lastSuccessAt":"2026-10-26T00:46:56.7731374+00:00","error":null,"lastVerifiedAt":"2026-10-26T00:46:56.7781981+00:00","snapshotPublishedAt":"2026-10-26T00:42:27+00:00","importing":false,"stagedRecords":0,"checkedIdentifiers":null,"expectedIdentifiers":null},{"source":"euvd","scope":"Rolling EUVD lookups of CVE aliases in current public OSV archives; 500 identifiers per refresh, rechecked after 48 hours. Not a global EUVD catalog. Successful not-found lookups count as checked; they do not imply withdrawal or safety. No reader inventory is sent.","generation":"enrichment-43321610382942b8ad8c85917eab1546","complete":false,"records":4735,"lastAttemptAt":"2026-10-26T00:47:02.6516296+00:00","lastSuccessAt":"2026-10-24T23:18:49.862+00:00","error":"InvalidDataException","lastVerifiedAt":"2026-10-24T23:18:49.862+00:00","snapshotPublishedAt":null,"importing":false,"stagedRecords":0,"checkedIdentifiers":4764,"expectedIdentifiers":13474},{"source":"first-epss:nuget","scope":"FIRST EPSS for explicit CVE aliases in the collected public NuGet archive. Not a global EPSS backfill.","generation":"2026-10-26T00:46:57.9533087+00:00","complete":true,"records":1093,"lastAttemptAt":"2026-10-26T00:46:57.9533087+00:00","lastSuccessAt":"2026-10-26T00:46:58.1082168+00:00","error":null,"lastVerifiedAt":"2026-10-26T00:46:58.1082172+00:00","snapshotPublishedAt":null,"importing":false,"stagedRecords":0,"checkedIdentifiers":null,"expectedIdentifiers":null},{"source":"nvd","scope":"Rolling NVD lookups of CVE aliases in current public OSV archives; 500 identifiers per refresh, rechecked after 48 hours. Not a global NVD catalog. Successful not-found lookups count as checked; they do not imply withdrawal or safety. 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