{"schema":"threatline.record/2","record":{"id":"CVE-2026-97966","aliases":[],"summary":"octeontx2-pf: reset HTB scheduler topology before freeing queues","details":"In the Linux kernel, the following vulnerability has been resolved:\n\nocteontx2-pf: reset HTB scheduler topology before freeing queues\n\nHTB offload programs NIX_AF_TLxX_TOPOLOGY on QoS-allocated scheduler\nqueues via otx2_qos_txschq_set_parent_topology(), but teardown freed\nthose queues without clearing TOPOLOGY.  The AF only restores PARENT and\nSCHEDULE on free, so PRIO_ANCHOR/RR_PRIO settings can survive in the\nshared scheduler pool and affect later allocations.\n\nAdd otx2_qos_reset_schq_topology() and otx2_qos_free_hw_schq() to zero\nTL4 through TL2 TOPOLOGY before each schq is returned to the AF during\nhierarchy teardown and cfg rollback.  Skip the aggregation level (TL1):\nit is a per-tx-link queue shared by the PF, default Tx hierarchy and VFs,\nand is not freed back to the AF by nix_txschq_free_one().","categories":["Operating systems"],"product":"Linux","vendor":"Linux","ecosystem":null,"affected_ranges":[{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2026-97966","source_modified_at":"2026-10-19T09:11:32.067Z","fetched_at":"2026-10-23T18:45:31.882637Z","product":"Linux","vendor":"Linux","versions":[{"version":"5e6808b4c68d7882971514ab3279926eb07c8b2d","lessThan":"16c5c8ea5017952ff14c87626a45359d195dda6f","status":"affected","versionType":"git"},{"version":"5e6808b4c68d7882971514ab3279926eb07c8b2d","lessThan":"0aa2dd6eaa347c7aab448df0eec0afcfe7489885","status":"affected","versionType":"git"},{"version":"5e6808b4c68d7882971514ab3279926eb07c8b2d","lessThan":"621c99be42e3f5cb68a6af9480a255218a761c4e","status":"affected","versionType":"git"},{"version":"5e6808b4c68d7882971514ab3279926eb07c8b2d","lessThan":"2df186418e17b30b319cf9ff81aad137692ab107","status":"affected","versionType":"git"},{"version":"5e6808b4c68d7882971514ab3279926eb07c8b2d","lessThan":"ef39fca8508597fa565cf2be72a884a712fb98af","status":"affected","versionType":"git"}],"defaultStatus":"unaffected"},{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2026-97966","source_modified_at":"2026-10-19T09:11:32.067Z","fetched_at":"2026-10-23T18:45:31.882637Z","product":"Linux","vendor":"Linux","versions":[{"version":"6.5","status":"affected"},{"version":"0","lessThan":"6.5","status":"unaffected","versionType":"semver"},{"version":"6.6.158","lessThanOrEqual":"6.6.*","status":"unaffected","versionType":"semver"},{"version":"6.12.111","lessThanOrEqual":"6.12.*","status":"unaffected","versionType":"semver"},{"version":"6.18.53","lessThanOrEqual":"6.18.*","status":"unaffected","versionType":"semver"},{"version":"7.2.7","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-2026-97966","source_modified_at":"2026-10-19T09:11:32.067Z","fetched_at":"2026-10-23T18:45:31.882637Z","package":{"name":"Linux","ecosystem":null},"version":"16c5c8ea5017952ff14c87626a45359d195dda6f","basis":"first unaffected version stated in the CVE record"},{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2026-97966","source_modified_at":"2026-10-19T09:11:32.067Z","fetched_at":"2026-10-23T18:45:31.882637Z","package":{"name":"Linux","ecosystem":null},"version":"0aa2dd6eaa347c7aab448df0eec0afcfe7489885","basis":"first unaffected version stated in the CVE record"},{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2026-97966","source_modified_at":"2026-10-19T09:11:32.067Z","fetched_at":"2026-10-23T18:45:31.882637Z","package":{"name":"Linux","ecosystem":null},"version":"621c99be42e3f5cb68a6af9480a255218a761c4e","basis":"first unaffected version stated in the CVE record"},{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2026-97966","source_modified_at":"2026-10-19T09:11:32.067Z","fetched_at":"2026-10-23T18:45:31.882637Z","package":{"name":"Linux","ecosystem":null},"version":"2df186418e17b30b319cf9ff81aad137692ab107","basis":"first unaffected version stated in the CVE record"}],"cvss":null,"severity":null,"kev":{"listed":false},"epss":{"probability":0.002,"percentile":0.09341,"score_date":"2026-10-23"},"published_at":"2026-09-25T10:23:08.543Z","modified_at":"2026-10-19T09:11:32.067Z","provenance":[{"source":"CVE List","url":"https://www.cve.org/CVERecord?id=CVE-2026-97966","fetched_at":"2026-10-23T18:45:31.882637Z","source_modified_at":"2026-10-19T09:11:32.067Z"},{"source":"EPSS","url":"https://api.first.org/data/v1/epss?cve=CVE-2026-97966","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/16c5c8ea5017952ff14c87626a45359d195dda6f"},{"source":"CVE List","url":"https://git.kernel.org/stable/c/0aa2dd6eaa347c7aab448df0eec0afcfe7489885"},{"source":"CVE List","url":"https://git.kernel.org/stable/c/621c99be42e3f5cb68a6af9480a255218a761c4e"},{"source":"CVE List","url":"https://git.kernel.org/stable/c/2df186418e17b30b319cf9ff81aad137692ab107"},{"source":"CVE List","url":"https://git.kernel.org/stable/c/ef39fca8508597fa565cf2be72a884a712fb98af"}],"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":"2026-10-19T09:11:32.067Z","content_hash":"1577236709e7c4a4187da621201221c4599c51178fd46fe6312362affae2fafb"}}