{"api_version":"1","generated_at":"2026-09-25T09:24:41+00:00","cve":"CVE-2026-97506","urls":{"html":"https://cve.report/CVE-2026-97506","api":"https://cve.report/api/cve/CVE-2026-97506.json","docs":"https://cve.report/api","cve_org":"https://www.cve.org/CVERecord?id=CVE-2026-97506","nvd":"https://nvd.nist.gov/vuln/detail/CVE-2026-97506"},"summary":{"title":"crypto: ixp4xx - fix buffer chain unwind on allocation failure","description":"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.","state":"PUBLISHED","assigner":"Linux","published_at":"2026-09-24 17:17:28","updated_at":"2026-09-24 17:17:28"},"problem_types":[],"metrics":[],"references":[{"url":"https://git.kernel.org/stable/c/25056329384010a8672552b134f609601dc4f80e","name":"https://git.kernel.org/stable/c/25056329384010a8672552b134f609601dc4f80e","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/04cb00106ca4d0fa9eca24cadc4eda6036e855c8","name":"https://git.kernel.org/stable/c/04cb00106ca4d0fa9eca24cadc4eda6036e855c8","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/028a7f4f3d69e551f6bf9f728d547bbf4cfc707d","name":"https://git.kernel.org/stable/c/028a7f4f3d69e551f6bf9f728d547bbf4cfc707d","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-97506","name":"CVE Program record","refsource":"CVE.ORG","tags":["canonical"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-97506","name":"NVD vulnerability detail","refsource":"NVD","tags":["canonical","analysis"]}],"affected":[{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 04cb00106ca4d0fa9eca24cadc4eda6036e855c8 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 028a7f4f3d69e551f6bf9f728d547bbf4cfc707d git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 25056329384010a8672552b134f609601dc4f80e git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 6.12.111 semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 6.18.53 semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 6.12.111 6.12.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 6.18.53 6.18.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 7.2 * original_commit_for_fix","platforms":[]}],"timeline":[],"solutions":[],"workarounds":[],"exploits":[],"credits":[],"nvd_cpes":[],"vendor_comments":[],"enrichments":{"kev":null,"epss":null,"legacy_qids":[]},"source_records":{"cve_program":{"containers":{"cna":{"affected":[{"defaultStatus":"unaffected","product":"Linux","programFiles":["drivers/crypto/intel/ixp4xx/ixp4xx_crypto.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"lessThan":"04cb00106ca4d0fa9eca24cadc4eda6036e855c8","status":"affected","version":"1da177e4c3f41524e886b7f1b8a0c1fc7321cac2","versionType":"git"},{"lessThan":"028a7f4f3d69e551f6bf9f728d547bbf4cfc707d","status":"affected","version":"1da177e4c3f41524e886b7f1b8a0c1fc7321cac2","versionType":"git"},{"lessThan":"25056329384010a8672552b134f609601dc4f80e","status":"affected","version":"1da177e4c3f41524e886b7f1b8a0c1fc7321cac2","versionType":"git"},{"lessThan":"6.12.111","status":"affected","version":"0","versionType":"semver"},{"lessThan":"6.18.53","status":"affected","version":"0","versionType":"semver"}]},{"defaultStatus":"affected","product":"Linux","programFiles":["drivers/crypto/intel/ixp4xx/ixp4xx_crypto.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"lessThanOrEqual":"6.12.*","status":"unaffected","version":"6.12.111","versionType":"semver"},{"lessThanOrEqual":"6.18.*","status":"unaffected","version":"6.18.53","versionType":"semver"},{"lessThanOrEqual":"*","status":"unaffected","version":"7.2","versionType":"original_commit_for_fix"}]}],"cpeApplicability":[{"nodes":[{"cpeMatch":[{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"6.12.111","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"6.18.53","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"7.2","vulnerable":true}],"negate":false,"operator":"OR"}]}],"descriptions":[{"lang":"en","value":"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."}],"providerMetadata":{"dateUpdated":"2026-09-24T16:04:55.504Z","orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","shortName":"Linux"},"references":[{"url":"https://git.kernel.org/stable/c/04cb00106ca4d0fa9eca24cadc4eda6036e855c8"},{"url":"https://git.kernel.org/stable/c/028a7f4f3d69e551f6bf9f728d547bbf4cfc707d"},{"url":"https://git.kernel.org/stable/c/25056329384010a8672552b134f609601dc4f80e"}],"title":"crypto: ixp4xx - fix buffer chain unwind on allocation failure","x_generator":{"engine":"bippy-1.2.0"}}},"cveMetadata":{"assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","assignerShortName":"Linux","cveId":"CVE-2026-97506","datePublished":"2026-09-24T16:04:55.504Z","dateReserved":"2026-09-24T16:01:01.151Z","dateUpdated":"2026-09-24T16:04:55.504Z","state":"PUBLISHED"},"dataType":"CVE_RECORD","dataVersion":"5.2"},"nvd":{"publishedDate":"2026-09-24 17:17:28","lastModifiedDate":"2026-09-24 17:17:28","problem_types":[],"metrics":[],"configurations":[]},"legacy_mitre":{"record":{"CveYear":"2026","CveId":"97506","Ordinal":"1","Title":"crypto: ixp4xx - fix buffer chain unwind on allocation failure","CVE":"CVE-2026-97506","Year":"2026"},"notes":[{"CveYear":"2026","CveId":"97506","Ordinal":"1","NoteData":"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.","Type":"Description","Title":"crypto: ixp4xx - fix buffer chain unwind on allocation failure"}]}}}