{"schema":"threatline.record/2","record":{"id":"CVE-2026-97537","aliases":[],"summary":"scsi: qla2xxx: Fix queue teardown NULL dma_free and bitmap locking","details":"In the Linux kernel, the following vulnerability has been resolved:\n\nscsi: qla2xxx: Fix queue teardown NULL dma_free and bitmap locking\n\nqla25xx_free_req_que() and qla25xx_free_rsp_que() have two pre-existing\nbugs exposed on the error path of qla25xx_create_{req,rsp}_que():\n\n 1. When dma_alloc_coherent() fails during queue creation, the error\n    path calls the free function with req->ring / rsp->ring still NULL\n    (from kzalloc).  The unconditional dma_free_coherent() with a NULL\n    cpu_addr is undefined behavior and can panic.\n\n 2. The free functions clear req_qid_map / rsp_qid_map under vport_lock,\n    but the create functions protect the same bitmaps with mq_lock.\n    This provides no mutual exclusion.  Additionally, the create error\n    path clears the bit and releases mq_lock before calling the free\n    function, creating a window where another thread can allocate the\n    same que_id and have its ha->req_q_map entry clobbered by the\n    subsequent lockless NULL assignment in the free function.\n\nFix by:\n\n - Guarding dma_free_coherent() with a NULL check on the ring pointer.\n\n - Using mq_lock (the lock held by all creators) in the free functions\n   to atomically NULL the map entry and clear the bitmap bit.\n\n - Removing the now-redundant clear_bit blocks from the create error\n   paths since the free functions handle it atomically.","categories":["Operating systems"],"product":"Linux","vendor":"Linux","ecosystem":null,"affected_ranges":[{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2026-97537","source_modified_at":"2026-10-21T12:53:12.722Z","fetched_at":"2026-10-23T18:45:31.882637Z","product":"Linux","vendor":"Linux","versions":[{"version":"73208dfd7ab19f379d73e8a0fbf30f92c203e5e8","lessThan":"2e6f60adf609c77e828f64e0cd371920bef91c12","status":"affected","versionType":"git"},{"version":"73208dfd7ab19f379d73e8a0fbf30f92c203e5e8","lessThan":"56e25d716833604fd5bff388e472f290bfe793aa","status":"affected","versionType":"git"},{"version":"73208dfd7ab19f379d73e8a0fbf30f92c203e5e8","lessThan":"f35cb67f2092b49d7949065dd56895ed47238f22","status":"affected","versionType":"git"},{"version":"73208dfd7ab19f379d73e8a0fbf30f92c203e5e8","lessThan":"94fc0c5b45de2bf3a691619bcfd10b9a49fc647e","status":"affected","versionType":"git"},{"version":"73208dfd7ab19f379d73e8a0fbf30f92c203e5e8","lessThan":"34a40e0dff940ac5eba494a69b553ea571e24873","status":"affected","versionType":"git"}],"defaultStatus":"unaffected"},{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2026-97537","source_modified_at":"2026-10-21T12:53:12.722Z","fetched_at":"2026-10-23T18:45:31.882637Z","product":"Linux","vendor":"Linux","versions":[{"version":"2.6.29","status":"affected"},{"version":"0","lessThan":"2.6.29","status":"unaffected","versionType":"semver"},{"version":"6.6.160","lessThanOrEqual":"6.6.*","status":"unaffected","versionType":"semver"},{"version":"6.12.112","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-2026-97537","source_modified_at":"2026-10-21T12:53:12.722Z","fetched_at":"2026-10-23T18:45:31.882637Z","package":{"name":"Linux","ecosystem":null},"version":"2e6f60adf609c77e828f64e0cd371920bef91c12","basis":"first unaffected version stated in the CVE record"},{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2026-97537","source_modified_at":"2026-10-21T12:53:12.722Z","fetched_at":"2026-10-23T18:45:31.882637Z","package":{"name":"Linux","ecosystem":null},"version":"56e25d716833604fd5bff388e472f290bfe793aa","basis":"first unaffected version stated in the CVE record"},{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2026-97537","source_modified_at":"2026-10-21T12:53:12.722Z","fetched_at":"2026-10-23T18:45:31.882637Z","package":{"name":"Linux","ecosystem":null},"version":"94fc0c5b45de2bf3a691619bcfd10b9a49fc647e","basis":"first unaffected version stated in the CVE record"},{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2026-97537","source_modified_at":"2026-10-21T12:53:12.722Z","fetched_at":"2026-10-23T18:45:31.882637Z","package":{"name":"Linux","ecosystem":null},"version":"34a40e0dff940ac5eba494a69b553ea571e24873","basis":"first unaffected version stated in the CVE record"}],"cvss":null,"severity":null,"kev":{"listed":false},"epss":{"probability":0.002,"percentile":0.0934,"score_date":"2026-10-23"},"published_at":"2026-09-25T10:21:35.608Z","modified_at":"2026-10-21T12:53:12.722Z","provenance":[{"source":"CVE List","url":"https://www.cve.org/CVERecord?id=CVE-2026-97537","fetched_at":"2026-10-23T18:45:31.882637Z","source_modified_at":"2026-10-21T12:53:12.722Z"},{"source":"EPSS","url":"https://api.first.org/data/v1/epss?cve=CVE-2026-97537","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/2e6f60adf609c77e828f64e0cd371920bef91c12"},{"source":"CVE List","url":"https://git.kernel.org/stable/c/56e25d716833604fd5bff388e472f290bfe793aa"},{"source":"CVE List","url":"https://git.kernel.org/stable/c/f35cb67f2092b49d7949065dd56895ed47238f22"},{"source":"CVE List","url":"https://git.kernel.org/stable/c/94fc0c5b45de2bf3a691619bcfd10b9a49fc647e"},{"source":"CVE List","url":"https://git.kernel.org/stable/c/34a40e0dff940ac5eba494a69b553ea571e24873"}],"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":"2026-10-21T12:53:12.722Z","content_hash":"642fb99c968a0a18b06fd0880004f57d379c713d96d4d19df4cacf4b8a87540f"}}