UNKNOWN NVD
CVE-2026-80945
In the Linux kernel, the following vulnerability has been resolved: crypto: iaa - unmap dst before software fallback on decompress On a hardware analytics err
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.
References
- https://git.kernel.org/stable/c/94a25930477113730372e0fa2985da4c5ac95c9a
- https://git.kernel.org/stable/c/fc933a4a419ba8a75da28666a018602c44846953
- https://git.kernel.org/stable/c/fcd86180ef78b0e41763faef7c6d2de7dfb50c1a
This unknown severity vulnerability was published on 2026-09-11 via NVD.
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