{"schema":"threatline.record/2","record":{"id":"CVE-2026-97506","aliases":[],"summary":"crypto: ixp4xx - fix buffer chain unwind on allocation failure","details":"In the Linux kernel, the following vulnerability has been resolved:\n\ncrypto: ixp4xx - fix buffer chain unwind on allocation failure\n\nchainup_buffers() builds a linked list of buffer descriptors for a\nscatterlist. If dma_pool_alloc() fails while constructing the list, the\ncurrent code sets buf to NULL and later dereferences it unconditionally\nat the end of the function:\n\n  buf->next = NULL;\n  buf->phys_next = 0;\n\nThis can lead to a null-pointer dereference on allocation failure.\n\nIf the failure happens after part of the descriptor chain has already\nbeen allocated and DMA-mapped, the partially constructed chain also\nneeds to be released.\n\nFix this by terminating the partially constructed chain on allocation\nfailure and letting the callers unwind it via their existing cleanup\npaths. Also fix ablk_perform() to preserve the hook pointers before\nchecking for failure, so partially built chains can be freed correctly.","categories":["Operating systems"],"product":"Linux","vendor":"Linux","ecosystem":null,"affected_ranges":[{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2026-97506","source_modified_at":"2026-10-03T10:59:03.858Z","fetched_at":"2026-10-23T18:52:38.922436Z","product":"Linux","vendor":"Linux","versions":[{"version":"0d44dc59b2b434b29aafeae581d06f81efac7c83","lessThan":"d4007867be42d71795b78fa7f8ce7514dda9ca83","status":"affected","versionType":"git"},{"version":"0d44dc59b2b434b29aafeae581d06f81efac7c83","lessThan":"4918b0bd7d2baafb45d87dca9e322137c96005c2","status":"affected","versionType":"git"},{"version":"0d44dc59b2b434b29aafeae581d06f81efac7c83","lessThan":"8c37bc8d6a6f77bf9593fb1bcab6c14c7cf02991","status":"affected","versionType":"git"},{"version":"0d44dc59b2b434b29aafeae581d06f81efac7c83","lessThan":"04cb00106ca4d0fa9eca24cadc4eda6036e855c8","status":"affected","versionType":"git"},{"version":"0d44dc59b2b434b29aafeae581d06f81efac7c83","lessThan":"028a7f4f3d69e551f6bf9f728d547bbf4cfc707d","status":"affected","versionType":"git"},{"version":"0d44dc59b2b434b29aafeae581d06f81efac7c83","lessThan":"25056329384010a8672552b134f609601dc4f80e","status":"affected","versionType":"git"},{"version":"5a80273150a8a1725fa70418d106eb1f2ee8fd2f","status":"affected","versionType":"git"},{"version":"82a8becb9c2c52fc5e67057a43aeded1f0731e7b","status":"affected","versionType":"git"},{"version":"68845515c8b11791b547a2838e22c27dfa3115ee","status":"affected","versionType":"git"},{"version":"2.6.27.22","lessThan":"2.6.28","status":"affected","versionType":"semver"},{"version":"2.6.28.10","lessThan":"2.6.29","status":"affected","versionType":"semver"},{"version":"2.6.29.3","lessThan":"2.6.30","status":"affected","versionType":"semver"}],"defaultStatus":"unaffected"},{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2026-97506","source_modified_at":"2026-10-03T10:59:03.858Z","fetched_at":"2026-10-23T18:52:38.922436Z","product":"Linux","vendor":"Linux","versions":[{"version":"2.6.30","status":"affected"},{"version":"0","lessThan":"2.6.30","status":"unaffected","versionType":"semver"},{"version":"5.15.222","lessThanOrEqual":"5.15.*","status":"unaffected","versionType":"semver"},{"version":"6.1.189","lessThanOrEqual":"6.1.*","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","lessThanOrEqual":"*","status":"unaffected","versionType":"original_commit_for_fix"}],"defaultStatus":"affected"}],"fixed_versions":[{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2026-97506","source_modified_at":"2026-10-03T10:59:03.858Z","fetched_at":"2026-10-23T18:52:38.922436Z","package":{"name":"Linux","ecosystem":null},"version":"4918b0bd7d2baafb45d87dca9e322137c96005c2","basis":"first unaffected version stated in the CVE record"},{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2026-97506","source_modified_at":"2026-10-03T10:59:03.858Z","fetched_at":"2026-10-23T18:52:38.922436Z","package":{"name":"Linux","ecosystem":null},"version":"8c37bc8d6a6f77bf9593fb1bcab6c14c7cf02991","basis":"first unaffected version stated in the CVE record"},{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2026-97506","source_modified_at":"2026-10-03T10:59:03.858Z","fetched_at":"2026-10-23T18:52:38.922436Z","package":{"name":"Linux","ecosystem":null},"version":"04cb00106ca4d0fa9eca24cadc4eda6036e855c8","basis":"first unaffected version stated in the CVE record"},{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2026-97506","source_modified_at":"2026-10-03T10:59:03.858Z","fetched_at":"2026-10-23T18:52:38.922436Z","package":{"name":"Linux","ecosystem":null},"version":"028a7f4f3d69e551f6bf9f728d547bbf4cfc707d","basis":"first unaffected version stated in the CVE record"},{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2026-97506","source_modified_at":"2026-10-03T10:59:03.858Z","fetched_at":"2026-10-23T18:52:38.922436Z","package":{"name":"Linux","ecosystem":null},"version":"25056329384010a8672552b134f609601dc4f80e","basis":"first unaffected version stated in the CVE record"},{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2026-97506","source_modified_at":"2026-10-03T10:59:03.858Z","fetched_at":"2026-10-23T18:52:38.922436Z","package":{"name":"Linux","ecosystem":null},"version":"2.6.28","basis":"first unaffected version stated in the CVE record"},{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2026-97506","source_modified_at":"2026-10-03T10:59:03.858Z","fetched_at":"2026-10-23T18:52:38.922436Z","package":{"name":"Linux","ecosystem":null},"version":"2.6.29","basis":"first unaffected version stated in the CVE record"},{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2026-97506","source_modified_at":"2026-10-03T10:59:03.858Z","fetched_at":"2026-10-23T18:52:38.922436Z","package":{"name":"Linux","ecosystem":null},"version":"2.6.30","basis":"first unaffected version stated in the CVE record"}],"cvss":null,"severity":null,"kev":{"listed":false},"epss":{"probability":0.00161,"percentile":0.04917,"score_date":"2026-10-23"},"published_at":"2026-09-24T16:04:55.504Z","modified_at":"2026-10-03T10:59:03.858Z","provenance":[{"source":"CVE List","url":"https://www.cve.org/CVERecord?id=CVE-2026-97506","fetched_at":"2026-10-23T18:52:38.922436Z","source_modified_at":"2026-10-03T10:59:03.858Z"},{"source":"EPSS","url":"https://api.first.org/data/v1/epss?cve=CVE-2026-97506","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/d4007867be42d71795b78fa7f8ce7514dda9ca83"},{"source":"CVE List","url":"https://git.kernel.org/stable/c/4918b0bd7d2baafb45d87dca9e322137c96005c2"},{"source":"CVE List","url":"https://git.kernel.org/stable/c/8c37bc8d6a6f77bf9593fb1bcab6c14c7cf02991"},{"source":"CVE List","url":"https://git.kernel.org/stable/c/04cb00106ca4d0fa9eca24cadc4eda6036e855c8"},{"source":"CVE List","url":"https://git.kernel.org/stable/c/028a7f4f3d69e551f6bf9f728d547bbf4cfc707d"},{"source":"CVE List","url":"https://git.kernel.org/stable/c/25056329384010a8672552b134f609601dc4f80e"}],"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":"2026-10-03T10:59:03.858Z","content_hash":"f1957d8bb6586efc324cb06a22e9faf85c3f865103f7f9e1a7856f595a89e7a8"}}