{"schema":"threatline.record/2","record":{"id":"CVE-2026-93211","aliases":[],"summary":"nfsd: initialize DRC hash table before registering shrinker","details":"In the Linux kernel, the following vulnerability has been resolved:\n\nnfsd: initialize DRC hash table before registering shrinker\n\nshrinker_register() precedes the INIT_LIST_HEAD loop and the\ndrc_hashsize store. On weakly-ordered architectures (arm64, ppc),\na shrinker scan can observe drc_hashsize before the bucket list\nheads are initialized, causing a NULL deref in the DRC shrinker\ncallback.\n\nMove bucket initialization and the drc_hashsize store before\nshrinker_register() so the hash table is fully initialized before\nit becomes visible to the shrinker.","categories":["Operating systems"],"product":"Linux","vendor":"Linux","ecosystem":null,"affected_ranges":[{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2026-93211","source_modified_at":"2026-10-19T09:07:23.361Z","fetched_at":"2026-10-23T18:45:31.882637Z","product":"Linux","vendor":"Linux","versions":[{"version":"8eea99a81c6f67c08fedd7db2ccd09aa93db69a7","lessThan":"f060f43a67635dbb393bf5dcbfc3e8b9a44942cb","status":"affected","versionType":"git"},{"version":"8eea99a81c6f67c08fedd7db2ccd09aa93db69a7","lessThan":"b57bd8cb739cb3cf88bdb1a5903a42a707a5c282","status":"affected","versionType":"git"},{"version":"8eea99a81c6f67c08fedd7db2ccd09aa93db69a7","lessThan":"431c70ca5163c98c746f22f16cd58ca5aefec6dc","status":"affected","versionType":"git"},{"version":"8eea99a81c6f67c08fedd7db2ccd09aa93db69a7","lessThan":"b0c58934f5cc4f05b63ef6605dd10c1d0d489e88","status":"affected","versionType":"git"}],"defaultStatus":"unaffected"},{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2026-93211","source_modified_at":"2026-10-19T09:07:23.361Z","fetched_at":"2026-10-23T18:45:31.882637Z","product":"Linux","vendor":"Linux","versions":[{"version":"6.7","status":"affected"},{"version":"0","lessThan":"6.7","status":"unaffected","versionType":"semver"},{"version":"6.12.109","lessThanOrEqual":"6.12.*","status":"unaffected","versionType":"semver"},{"version":"6.18.50","lessThanOrEqual":"6.18.*","status":"unaffected","versionType":"semver"},{"version":"7.2.4","lessThanOrEqual":"7.2.*","status":"unaffected","versionType":"semver"},{"version":"7.3","lessThanOrEqual":"*","status":"unaffected","versionType":"original_commit_for_fix"}],"defaultStatus":"affected"}],"fixed_versions":[{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2026-93211","source_modified_at":"2026-10-19T09:07:23.361Z","fetched_at":"2026-10-23T18:45:31.882637Z","package":{"name":"Linux","ecosystem":null},"version":"431c70ca5163c98c746f22f16cd58ca5aefec6dc","basis":"first unaffected version stated in the CVE record"}],"cvss":null,"severity":null,"kev":{"listed":false},"epss":{"probability":0.00168,"percentile":0.05731,"score_date":"2026-10-23"},"published_at":"2026-09-24T15:10:34.407Z","modified_at":"2026-10-19T09:07:23.361Z","provenance":[{"source":"CVE List","url":"https://www.cve.org/CVERecord?id=CVE-2026-93211","fetched_at":"2026-10-23T18:45:31.882637Z","source_modified_at":"2026-10-19T09:07:23.361Z"},{"source":"EPSS","url":"https://api.first.org/data/v1/epss?cve=CVE-2026-93211","fetched_at":"2026-10-23T18:42:43.628194Z","source_modified_at":"2026-10-23"}],"sources":["CVE List","EPSS"],"references":[{"source":"CVE List","url":"https://git.kernel.org/stable/c/f060f43a67635dbb393bf5dcbfc3e8b9a44942cb"},{"source":"CVE List","url":"https://git.kernel.org/stable/c/b57bd8cb739cb3cf88bdb1a5903a42a707a5c282"},{"source":"CVE List","url":"https://git.kernel.org/stable/c/431c70ca5163c98c746f22f16cd58ca5aefec6dc"},{"source":"CVE List","url":"https://git.kernel.org/stable/c/b0c58934f5cc4f05b63ef6605dd10c1d0d489e88"}],"locations":[],"motoko_assessment":{"status":"requires_architecture_review","automatic_remediation":false},"cve_state":"PUBLISHED","classification":{"method":"product-first software-layer rules","rules_version":"2.1","matched_on":"product","confidence":"heuristic","reviewed":false},"change_timestamp":"2026-10-19T09:07:23.361Z","content_hash":"ed66e6b2acd50dfa1e863e96674b276a20e46a8e30f77d68e3cc482b2ee28f82"}}