{"api_version":"1","generated_at":"2026-09-12T09:41:54+00:00","cve":"CVE-2026-80945","urls":{"html":"https://cve.report/CVE-2026-80945","api":"https://cve.report/api/cve/CVE-2026-80945.json","docs":"https://cve.report/api","cve_org":"https://www.cve.org/CVERecord?id=CVE-2026-80945","nvd":"https://nvd.nist.gov/vuln/detail/CVE-2026-80945"},"summary":{"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":"PUBLISHED","assigner":"Linux","published_at":"2026-09-11 20:19:00","updated_at":"2026-09-11 20:19:00"},"problem_types":[],"metrics":[],"references":[{"url":"https://git.kernel.org/stable/c/94a25930477113730372e0fa2985da4c5ac95c9a","name":"https://git.kernel.org/stable/c/94a25930477113730372e0fa2985da4c5ac95c9a","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/fcd86180ef78b0e41763faef7c6d2de7dfb50c1a","name":"https://git.kernel.org/stable/c/fcd86180ef78b0e41763faef7c6d2de7dfb50c1a","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/fc933a4a419ba8a75da28666a018602c44846953","name":"https://git.kernel.org/stable/c/fc933a4a419ba8a75da28666a018602c44846953","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-80945","name":"CVE Program record","refsource":"CVE.ORG","tags":["canonical"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-80945","name":"NVD vulnerability detail","refsource":"NVD","tags":["canonical","analysis"]}],"affected":[{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 2ec6761df889fdf896fde761abd447596dd8f8c2 fc933a4a419ba8a75da28666a018602c44846953 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 2ec6761df889fdf896fde761abd447596dd8f8c2 fcd86180ef78b0e41763faef7c6d2de7dfb50c1a git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 2ec6761df889fdf896fde761abd447596dd8f8c2 94a25930477113730372e0fa2985da4c5ac95c9a git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 6.8","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 6.8 semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 6.18.51 6.18.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 7.2.4 7.2.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 7.3-rc1 * 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/iaa/iaa_crypto_main.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"lessThan":"fc933a4a419ba8a75da28666a018602c44846953","status":"affected","version":"2ec6761df889fdf896fde761abd447596dd8f8c2","versionType":"git"},{"lessThan":"fcd86180ef78b0e41763faef7c6d2de7dfb50c1a","status":"affected","version":"2ec6761df889fdf896fde761abd447596dd8f8c2","versionType":"git"},{"lessThan":"94a25930477113730372e0fa2985da4c5ac95c9a","status":"affected","version":"2ec6761df889fdf896fde761abd447596dd8f8c2","versionType":"git"}]},{"defaultStatus":"affected","product":"Linux","programFiles":["drivers/crypto/intel/iaa/iaa_crypto_main.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"status":"affected","version":"6.8"},{"lessThan":"6.8","status":"unaffected","version":"0","versionType":"semver"},{"lessThanOrEqual":"6.18.*","status":"unaffected","version":"6.18.51","versionType":"semver"},{"lessThanOrEqual":"7.2.*","status":"unaffected","version":"7.2.4","versionType":"semver"},{"lessThanOrEqual":"*","status":"unaffected","version":"7.3-rc1","versionType":"original_commit_for_fix"}]}],"cpeApplicability":[{"nodes":[{"cpeMatch":[{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"6.18.51","versionStartIncluding":"6.8","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"7.2.4","versionStartIncluding":"6.8","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"7.3-rc1","versionStartIncluding":"6.8","vulnerable":true}],"negate":false,"operator":"OR"}]}],"descriptions":[{"lang":"en","value":"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."}],"providerMetadata":{"dateUpdated":"2026-09-11T19:42:16.824Z","orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","shortName":"Linux"},"references":[{"url":"https://git.kernel.org/stable/c/fc933a4a419ba8a75da28666a018602c44846953"},{"url":"https://git.kernel.org/stable/c/fcd86180ef78b0e41763faef7c6d2de7dfb50c1a"},{"url":"https://git.kernel.org/stable/c/94a25930477113730372e0fa2985da4c5ac95c9a"}],"title":"crypto: iaa - unmap dst before software fallback on decompress","x_generator":{"engine":"bippy-1.2.0"}}},"cveMetadata":{"assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","assignerShortName":"Linux","cveId":"CVE-2026-80945","datePublished":"2026-09-11T19:42:16.824Z","dateReserved":"2026-08-26T14:34:25.803Z","dateUpdated":"2026-09-11T19:42:16.824Z","state":"PUBLISHED"},"dataType":"CVE_RECORD","dataVersion":"5.2"},"nvd":{"publishedDate":"2026-09-11 20:19:00","lastModifiedDate":"2026-09-11 20:19:00","problem_types":[],"metrics":[],"configurations":[]},"legacy_mitre":{"record":{"CveYear":"2026","CveId":"80945","Ordinal":"1","Title":"crypto: iaa - unmap dst before software fallback on decompress","CVE":"CVE-2026-80945","Year":"2026"},"notes":[{"CveYear":"2026","CveId":"80945","Ordinal":"1","NoteData":"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.","Type":"Description","Title":"crypto: iaa - unmap dst before software fallback on decompress"}]}}}