{"id":"CVE-2026-97966","revision":"ca0745af73844a329eff8a8683ee4ae4","records":[{"revision":"ca0745af73844a329eff8a8683ee4ae4","observedAt":"2026-10-23T15:48:27.903+00:00","statement":{"source":"cve-program","id":"CVE-2026-97966","aliases":[],"title":"octeontx2-pf: reset HTB scheduler topology before freeing queues","description":"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().","state":0,"publishedAt":"2026-09-25T10:23:08.543+00:00","modifiedAt":"2026-10-19T09:11:32.067+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                        \"drivers/net/ethernet/marvell/octeontx2/nic/qos.c\"\n                    ],\n                    \"versions\": [\n                        {\n                            \"version\": \"5e6808b4c68d7882971514ab3279926eb07c8b2d\",\n                            \"lessThan\": \"16c5c8ea5017952ff14c87626a45359d195dda6f\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"5e6808b4c68d7882971514ab3279926eb07c8b2d\",\n                            \"lessThan\": \"0aa2dd6eaa347c7aab448df0eec0afcfe7489885\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"5e6808b4c68d7882971514ab3279926eb07c8b2d\",\n                            \"lessThan\": \"621c99be42e3f5cb68a6af9480a255218a761c4e\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"5e6808b4c68d7882971514ab3279926eb07c8b2d\",\n                            \"lessThan\": \"2df186418e17b30b319cf9ff81aad137692ab107\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"5e6808b4c68d7882971514ab3279926eb07c8b2d\",\n                            \"lessThan\": \"ef39fca8508597fa565cf2be72a884a712fb98af\",\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                        \"drivers/net/ethernet/marvell/octeontx2/nic/qos.c\"\n                    ],\n                    \"versions\": [\n                        {\n                            \"version\": \"6.5\",\n                            \"status\": \"affected\"\n                        },\n                        {\n                            \"version\": \"0\",\n                            \"lessThan\": \"6.5\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"6.6.158\",\n                            \"lessThanOrEqual\": \"6.6.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"6.12.111\",\n                            \"lessThanOrEqual\": \"6.12.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"6.18.53\",\n                            \"lessThanOrEqual\": \"6.18.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"7.2.7\",\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":[],"references":["https://git.kernel.org/stable/c/16c5c8ea5017952ff14c87626a45359d195dda6f","https://git.kernel.org/stable/c/0aa2dd6eaa347c7aab448df0eec0afcfe7489885","https://git.kernel.org/stable/c/621c99be42e3f5cb68a6af9480a255218a761c4e","https://git.kernel.org/stable/c/2df186418e17b30b319cf9ff81aad137692ab107","https://git.kernel.org/stable/c/ef39fca8508597fa565cf2be72a884a712fb98af"],"sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-97966","license":"CVE Program Terms of Use","key":"cve-program:CVE-2026-97966","identifiers":["CVE-2026-97966"]},"retained":false,"historicalAffected":[]}],"coverage":[]}