{"schema":"threatline.record/2","record":{"id":"CVE-2026-98512","aliases":[],"summary":"drm/nouveau: RCU-free the scheduler-containing nouveau_sched","details":"In the Linux kernel, the following vulnerability has been resolved:\n\ndrm/nouveau: RCU-free the scheduler-containing nouveau_sched\n\nstruct nouveau_sched embeds a struct drm_gpu_scheduler (base).\nnouveau_sched_destroy() calls nouveau_sched_fini() (which does\ndrm_sched_fini(&sched->base)) and then frees the object with plain\nkfree(sched).\n\ndrm_sched_fence_get_timeline_name() returns fence->sched->name, and the\nscheduler fence keeps a .release callback so it is not ops-detached on\nsignalling.  A finished fence exported to userspace via drm_syncobj /\nsync_file therefore keeps pointing at &sched->base after nouveau_sched_destroy(),\nand a later get_timeline_name() -- reachable unprivileged through\nSYNC_IOC_FILE_INFO -- dereferences freed memory (KASAN slab-use-after-free\nread).\n\nPer the dma-fence lifetime contract the exporter must keep the data backing a\nsignalled fence alive for an RCU grace period.  Free the scheduler-containing\nobject with kfree_rcu() instead of kfree().","categories":["Operating systems"],"product":"Linux","vendor":"Linux","ecosystem":null,"affected_ranges":[{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2026-98512","source_modified_at":"2026-10-24T14:09:12.662Z","fetched_at":"2026-10-24T14:26:37.433577Z","product":"Linux","vendor":"Linux","versions":[{"version":"5f03a507b29e44a848f315c7240c19894dd8be4f","lessThan":"40edf5eefc3fd94592a91d6eb074d4fc6f606c75","status":"affected","versionType":"git"},{"version":"5f03a507b29e44a848f315c7240c19894dd8be4f","lessThan":"35151e9a8274174ccbb92e3b3ba7dc7a008dcada","status":"affected","versionType":"git"},{"version":"5f03a507b29e44a848f315c7240c19894dd8be4f","lessThan":"cd6e11b6ebe04a0a1f1435df561acada9eadc563","status":"affected","versionType":"git"},{"version":"5f03a507b29e44a848f315c7240c19894dd8be4f","lessThan":"f7eae6d8d768fabd6b59779ca7da79e02c74e113","status":"affected","versionType":"git"}],"defaultStatus":"unaffected"},{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2026-98512","source_modified_at":"2026-10-24T14:09:12.662Z","fetched_at":"2026-10-24T14:26:37.433577Z","product":"Linux","vendor":"Linux","versions":[{"version":"6.8","status":"affected"},{"version":"0","lessThan":"6.8","status":"unaffected","versionType":"semver"},{"version":"6.12.112","lessThanOrEqual":"6.12.*","status":"unaffected","versionType":"semver"},{"version":"6.18.55","lessThanOrEqual":"6.18.*","status":"unaffected","versionType":"semver"},{"version":"7.2.9","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-2026-98512","source_modified_at":"2026-10-24T14:09:12.662Z","fetched_at":"2026-10-24T14:26:37.433577Z","package":{"name":"Linux","ecosystem":null},"version":"40edf5eefc3fd94592a91d6eb074d4fc6f606c75","basis":"first unaffected version stated in the CVE record"},{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2026-98512","source_modified_at":"2026-10-24T14:09:12.662Z","fetched_at":"2026-10-24T14:26:37.433577Z","package":{"name":"Linux","ecosystem":null},"version":"35151e9a8274174ccbb92e3b3ba7dc7a008dcada","basis":"first unaffected version stated in the CVE record"}],"cvss":7.1,"severity":"High","kev":{"listed":false},"epss":{"probability":0.002,"percentile":0.09334,"score_date":"2026-10-23"},"published_at":"2026-10-18T15:17:27.102Z","modified_at":"2026-10-24T14:09:12.662Z","provenance":[{"source":"CVE List","url":"https://www.cve.org/CVERecord?id=CVE-2026-98512","fetched_at":"2026-10-24T14:26:37.433577Z","source_modified_at":"2026-10-24T14:09:12.662Z"},{"source":"EPSS","url":"https://api.first.org/data/v1/epss?cve=CVE-2026-98512","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/40edf5eefc3fd94592a91d6eb074d4fc6f606c75"},{"source":"CVE List","url":"https://git.kernel.org/stable/c/35151e9a8274174ccbb92e3b3ba7dc7a008dcada"},{"source":"CVE List","url":"https://git.kernel.org/stable/c/cd6e11b6ebe04a0a1f1435df561acada9eadc563"},{"source":"CVE List","url":"https://git.kernel.org/stable/c/f7eae6d8d768fabd6b59779ca7da79e02c74e113"}],"locations":[],"motoko_assessment":{"status":"requires_architecture_review","automatic_remediation":false},"cve_state":"PUBLISHED","cvss_source":"CVE List","classification":{"method":"product-first software-layer rules","rules_version":"2.1","matched_on":"product","confidence":"heuristic","reviewed":false},"change_timestamp":"2026-10-24T14:09:12.662Z","content_hash":"280e450c7c7d6343f1de3e7576b1c14c748eb3d1c5d36d583610e680380c80f0"}}