CVE-2026-80945crypto: iaa - unmap dst before software fallback on decompress
- 9.1CriticalCVSS base score
- 0.50%Exploitation in 30 daysEPSS · top 57% of all CVEs
- NoKnown exploitednot in CISA's KEV catalog
- NonePublic exploitsnone known yet
Description
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.
Timeline
ID reserved
By Linux
- 16 days later
· 16 days later
Published
- 38 days later
· 38 days later
Record updated
Changes after publication (a new score, a public exploit, EPSS crossing 1, 10 or 50 %, leaving KEV) are kept since November 2026; earlier ones are not known.
Scores
| Scored by | CVSS | Score | Vector |
|---|---|---|---|
| LinuxCNA (assigner) | 3.1 | Critical9.1 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N |
| NVDNVD · Received | 3.1 | Critical9.1 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N |
- EPSS (exploitation in 30 days)
- 0.50% · top 57% of all CVEs (12 Nov 2026)
The list uses the assigner's score when there is one, then CISA's, then NVD's: Critical 9.1.
Affected products
- affected 2ec6761df889fdf896fde761abd447596dd8f8c2 – < c0279e5ea2aad99d8b91f1a6579d751cc9eb2408
- affected 2ec6761df889fdf896fde761abd447596dd8f8c2 – < fc933a4a419ba8a75da28666a018602c44846953
- affected 2ec6761df889fdf896fde761abd447596dd8f8c2 – < fcd86180ef78b0e41763faef7c6d2de7dfb50c1a
- affected 2ec6761df889fdf896fde761abd447596dd8f8c2 – < 94a25930477113730372e0fa2985da4c5ac95c9a
- affected 6.8
- unaffected < 6.8
- unaffected 6.12.111 – ≤ 6.12.*
- unaffected 6.18.51 – ≤ 6.18.*
- unaffected 7.2.4 – ≤ 7.2.*
- unaffected 7.3 – ≤ *
References
References4
- https://git.kernel.org/stable/c/c0279e5ea2aad99d8b91f1a6579d751cc9eb2408 (opens in a new tab)
- https://git.kernel.org/stable/c/fc933a4a419ba8a75da28666a018602c44846953 (opens in a new tab)
- https://git.kernel.org/stable/c/fcd86180ef78b0e41763faef7c6d2de7dfb50c1a (opens in a new tab)
- https://git.kernel.org/stable/c/94a25930477113730372e0fa2985da4c5ac95c9a (opens in a new tab)
Sources
The same CVE in the primary databases and aggregators, to check against.
- CVE.org record (opens in a new tab)
- CVE List JSON (GitHub) (opens in a new tab)
- NVD (opens in a new tab)
- FIRST EPSS (opens in a new tab)
- EUVD EUVD-2026-76268 (opens in a new tab)
- OSV.dev (opens in a new tab)
- GitHub Advisories (opens in a new tab)
- CIRCL Vulnerability-Lookup (opens in a new tab)
Badge for a README or a ticket
[](https://cveledger.app/cve/CVE-2026-80945)Record last updated .