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Back to active CVEs
Critical · CVSS 9.1CVE-2026-80945

crypto: iaa - unmap dst before software fallback on decompressCVE-2026-80945

Answer in brief

CVE-2026-80945 records a Critical severity (CVSS 9.1) vulnerability in crypto: iaa - unmap dst before software fallback on decompress. The current sources do not mark it as known exploited. The current feed maps Linux/Linux (generic), Linux/Linux (generic), Linux/Linux (generic). Check affected ranges and fixed versions before updating.

Analysis pending evidence review

HOL Guard separates source facts from reviewed analysis. See the methodology.

Published Sep 11, 2026Updated Oct 19, 2026Source checked Oct 27, 2026First seen by HOL Sep 11, 2026Material review Oct 19, 2026
Upstream Advisory

Key facts

Risk
Critical · CVSS 9.1
Exploitation
Not marked as known exploited
Affected software
3 mapped packages or products
Fix availability
Available

Why this deserves its current priority

CVSS is 9.1. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.

Analysis status

Analysis pending evidence review

Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.

Affected scope and exposure questions

The current feed maps Linux/Linux (generic), Linux/Linux (generic), Linux/Linux (generic). Check affected ranges and fixed versions before updating.

Mapped affected packages and fixed versions
PackageAffected rangeFixed version
Linux/Linuxgeneric>=2ec6761df889fdf896fde761abd447596dd8f8c2 <fc933a4a419ba8a75da28666a018602c44846953 || >=2ec6761df889fdf896fde761abd447596dd8f8c2 <fcd86180ef78b0e41763faef7c6d2de7dfb50c1a || >=2ec6761df889fdf896fde761abd447596dd8f8c2 <94a25930477113730372e0fa2985da4c5ac95c9afc933a4a419ba8a75da28666a018602c44846953, fcd86180ef78b0e41763faef7c6d2de7dfb50c1a, 94a25930477113730372e0fa2985da4c5ac95c9a
Linux/Linuxgeneric6.8Not reported
Linux/Linuxgeneric>=2ec6761df889fdf896fde761abd447596dd8f8c2 <c0279e5ea2aad99d8b91f1a6579d751cc9eb2408 || >=2ec6761df889fdf896fde761abd447596dd8f8c2 <fc933a4a419ba8a75da28666a018602c44846953 || >=2ec6761df889fdf896fde761abd447596dd8f8c2 <fcd86180ef78b0e41763faef7c6d2de7dfb50c1a || >=2ec6761df889fdf896fde761abd447596dd8f8c2 <94a25930477113730372e0fa2985da4c5ac95c9ac0279e5ea2aad99d8b91f1a6579d751cc9eb2408, fc933a4a419ba8a75da28666a018602c44846953, fcd86180ef78b0e41763faef7c6d2de7dfb50c1a, 94a25930477113730372e0fa2985da4c5ac95c9a

Recommended response

  1. 1Check inventory. Check lockfiles and deployed manifests for Linux/Linux, Linux/Linux, Linux/Linux.
  2. 2Review the reported fix. Update Linux/Linux to fc933a4a419ba8a75da28666a018602c44846953; Linux/Linux to c0279e5ea2aad99d8b91f1a6579d751cc9eb2408 if you use the affected versions. Test the change in a non-production environment first.

Evidence timeline and material changes

  1. Published upstream

    Sep 11, 2026

    Evidence: source:cvelist:source_dates:source-dates:record

  2. Source modified

    Oct 19, 2026

    Evidence: source:cvelist:source_dates:source-dates:record

  3. First seen by HOL

    Sep 11, 2026

Sources and claim methodology

  • Source referencegit.kernel.org
  • Source referencegit.kernel.org
  • Source referencegit.kernel.org
  • Source referencegit.kernel.org
Upstream source 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.

Quoted source text, attributed separately from HOL analysis.

Record context

Vulnerability class
Vulnerability
EPSS
Not reported
CWE IDs
Not reported
Source
CVE List V5
Source checked
Oct 27, 2026
References
4 linked sources
Open source record