{"id":"CVE-2026-80945","summary":"crypto: iaa - unmap dst before software fallback on decompress","details":"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-\u003edst 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-\u003edst, 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.","modified":"2026-09-13T03:46:45.652735320Z","published":"2026-09-11T19:42:16.824Z","database_specific":{"osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/80xxx/CVE-2026-80945.json","cna_assigner":"Linux"},"references":[{"type":"WEB","url":"https://git.kernel.org/stable/c/94a25930477113730372e0fa2985da4c5ac95c9a"},{"type":"WEB","url":"https://git.kernel.org/stable/c/fc933a4a419ba8a75da28666a018602c44846953"},{"type":"WEB","url":"https://git.kernel.org/stable/c/fcd86180ef78b0e41763faef7c6d2de7dfb50c1a"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/80xxx/CVE-2026-80945.json"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-80945"},{"type":"PACKAGE","url":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","events":[{"introduced":"2ec6761df889fdf896fde761abd447596dd8f8c2"},{"fixed":"fc933a4a419ba8a75da28666a018602c44846953"},{"fixed":"fcd86180ef78b0e41763faef7c6d2de7dfb50c1a"},{"fixed":"94a25930477113730372e0fa2985da4c5ac95c9a"}]}],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-80945.json"}},{"package":{"name":"Kernel","ecosystem":"Linux"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"6.8.0"},{"fixed":"6.18.51"}]},{"type":"ECOSYSTEM","events":[{"introduced":"6.19.0"},{"fixed":"7.2.4"}]}],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-80945.json"}}],"schema_version":"1.9.0"}