{"id":"CVE-2026-97506","revision":"608410dedb8646188f48d6873aa97e60","records":[{"revision":"608410dedb8646188f48d6873aa97e60","observedAt":"2026-10-23T15:48:27.903+00:00","statement":{"source":"cve-program","id":"CVE-2026-97506","aliases":[],"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":0,"publishedAt":"2026-09-24T16:04:55.504+00:00","modifiedAt":"2026-10-03T10:59:03.858+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/crypto/intel/ixp4xx/ixp4xx_crypto.c\"\n                    ],\n                    \"versions\": [\n                        {\n                            \"version\": \"0d44dc59b2b434b29aafeae581d06f81efac7c83\",\n                            \"lessThan\": \"d4007867be42d71795b78fa7f8ce7514dda9ca83\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"0d44dc59b2b434b29aafeae581d06f81efac7c83\",\n                            \"lessThan\": \"4918b0bd7d2baafb45d87dca9e322137c96005c2\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"0d44dc59b2b434b29aafeae581d06f81efac7c83\",\n                            \"lessThan\": \"8c37bc8d6a6f77bf9593fb1bcab6c14c7cf02991\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"0d44dc59b2b434b29aafeae581d06f81efac7c83\",\n                            \"lessThan\": \"04cb00106ca4d0fa9eca24cadc4eda6036e855c8\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"0d44dc59b2b434b29aafeae581d06f81efac7c83\",\n                            \"lessThan\": \"028a7f4f3d69e551f6bf9f728d547bbf4cfc707d\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"0d44dc59b2b434b29aafeae581d06f81efac7c83\",\n                            \"lessThan\": \"25056329384010a8672552b134f609601dc4f80e\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"5a80273150a8a1725fa70418d106eb1f2ee8fd2f\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"82a8becb9c2c52fc5e67057a43aeded1f0731e7b\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"68845515c8b11791b547a2838e22c27dfa3115ee\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"2.6.27.22\",\n                            \"lessThan\": \"2.6.28\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"2.6.28.10\",\n                            \"lessThan\": \"2.6.29\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"2.6.29.3\",\n                            \"lessThan\": \"2.6.30\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"semver\"\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/crypto/intel/ixp4xx/ixp4xx_crypto.c\"\n                    ],\n                    \"versions\": [\n                        {\n                            \"version\": \"2.6.30\",\n                            \"status\": \"affected\"\n                        },\n                        {\n                            \"version\": \"0\",\n                            \"lessThan\": \"2.6.30\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"5.15.222\",\n                            \"lessThanOrEqual\": \"5.15.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"6.1.189\",\n                            \"lessThanOrEqual\": \"6.1.*\",\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\",\n                            \"lessThanOrEqual\": \"*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"original_commit_for_fix\"\n                        }\n                    ]\n                }"}],"metrics":[],"references":["https://git.kernel.org/stable/c/d4007867be42d71795b78fa7f8ce7514dda9ca83","https://git.kernel.org/stable/c/4918b0bd7d2baafb45d87dca9e322137c96005c2","https://git.kernel.org/stable/c/8c37bc8d6a6f77bf9593fb1bcab6c14c7cf02991","https://git.kernel.org/stable/c/04cb00106ca4d0fa9eca24cadc4eda6036e855c8","https://git.kernel.org/stable/c/028a7f4f3d69e551f6bf9f728d547bbf4cfc707d","https://git.kernel.org/stable/c/25056329384010a8672552b134f609601dc4f80e"],"sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-97506","license":"CVE Program Terms of Use","key":"cve-program:CVE-2026-97506","identifiers":["CVE-2026-97506"]},"retained":false,"historicalAffected":[]}],"coverage":[]}