CVE-2026-80945
crypto: iaa - unmap dst before software fallback on decompress
CVSS Score
9.1
EPSS Score
0.0%
EPSS Percentile
0th
In the Linux kernel, the following vulnerability has been resolved: crypto: iaa - unmap dst before software fallback on decompress On a hardware analytics error, decompress retries through the software fallback, which writes req->dst with the CPU while it is still mapped DMA_FROM_DEVICE. With SWIOTLB active the later dma_unmap_sg() copies the stale bounce buffer over req->dst, corrupting the result. Unmap before the fallback runs. The async path unmaps inline; the sync path signals the retry with -EAGAIN so iaa_comp_adecompress() runs the fallback after unmapping.
| Vendor | linux |
| Product | linux |
| Ecosystems | |
| Industries | Technology |
| Published | Sep 11, 2026 |
| Last Updated | Sep 13, 2026 |
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CVSS v3 Breakdown
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N Attack Vector
Attack Complexity
Privileges Required
User Interaction
Scope
Confidentiality
Integrity
Availability
Affected Versions
Linux / Linux
2ec6761df889fdf896fde761abd447596dd8f8c2 < fc933a4a419ba8a75da28666a018602c44846953 2ec6761df889fdf896fde761abd447596dd8f8c2 < fcd86180ef78b0e41763faef7c6d2de7dfb50c1a 2ec6761df889fdf896fde761abd447596dd8f8c2 < 94a25930477113730372e0fa2985da4c5ac95c9a
Linux / Linux
6.8