{"id":"CVE-2026-80945","revision":"fd1da5fcf8fd42709a82c44f2deea52e","records":[{"revision":"fd1da5fcf8fd42709a82c44f2deea52e","observedAt":"2026-10-23T15:48:27.903+00:00","statement":{"source":"cve-program","id":"CVE-2026-80945","aliases":[],"title":"crypto: iaa - unmap dst before software fallback on decompress","description":"In the Linux kernel, the following vulnerability has been resolved:\n\ncrypto: iaa - unmap dst before software fallback on decompress\n\nOn a hardware analytics error, decompress retries through the software\nfallback, which writes req->dst with the CPU while it is still mapped\nDMA_FROM_DEVICE. With SWIOTLB active the later dma_unmap_sg() copies the\nstale bounce buffer over req->dst, corrupting the result.\n\nUnmap before the fallback runs. The async path unmaps inline; the sync\npath signals the retry with -EAGAIN so iaa_comp_adecompress() runs the\nfallback after unmapping.","state":0,"publishedAt":"2026-09-11T19:42:16.824+00:00","modifiedAt":"2026-10-19T08:45:29.322+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/iaa/iaa_crypto_main.c\"\n                    ],\n                    \"versions\": [\n                        {\n                            \"version\": \"2ec6761df889fdf896fde761abd447596dd8f8c2\",\n                            \"lessThan\": \"c0279e5ea2aad99d8b91f1a6579d751cc9eb2408\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"2ec6761df889fdf896fde761abd447596dd8f8c2\",\n                            \"lessThan\": \"fc933a4a419ba8a75da28666a018602c44846953\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"2ec6761df889fdf896fde761abd447596dd8f8c2\",\n                            \"lessThan\": \"fcd86180ef78b0e41763faef7c6d2de7dfb50c1a\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"2ec6761df889fdf896fde761abd447596dd8f8c2\",\n                            \"lessThan\": \"94a25930477113730372e0fa2985da4c5ac95c9a\",\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/crypto/intel/iaa/iaa_crypto_main.c\"\n                    ],\n                    \"versions\": [\n                        {\n                            \"version\": \"6.8\",\n                            \"status\": \"affected\"\n                        },\n                        {\n                            \"version\": \"0\",\n                            \"lessThan\": \"6.8\",\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\": \"6.18.51\",\n                            \"lessThanOrEqual\": \"6.18.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"7.2.4\",\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":[{"system":"CVSS 3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N","score":9.1,"severity":"CRITICAL"}],"references":["https://git.kernel.org/stable/c/c0279e5ea2aad99d8b91f1a6579d751cc9eb2408","https://git.kernel.org/stable/c/fc933a4a419ba8a75da28666a018602c44846953","https://git.kernel.org/stable/c/fcd86180ef78b0e41763faef7c6d2de7dfb50c1a","https://git.kernel.org/stable/c/94a25930477113730372e0fa2985da4c5ac95c9a"],"sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-80945","license":"CVE Program Terms of Use","key":"cve-program:CVE-2026-80945","identifiers":["CVE-2026-80945"]},"retained":false,"historicalAffected":[]}],"coverage":[]}