crypto: iaa - unmap dst before software fallback on decompress (CVE-2026-80945) | HOL Guard CVE

Unknown severity · Source severity not reportedCVE-2026-80945

crypto: iaa - unmap dst before software fallback on decompress

Answer in brief

CVE-2026-80945 records a Unknown severity 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). 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 Sep 11, 2026Source checked Sep 11, 2026First seen by HOL Sep 11, 2026Material review Sep 11, 2026

Upstream Advisory

Key facts

Risk: Unknown severitySource severity not reported
Exploitation: Not marked as known exploited
Affected software: 2 mapped packages or products
Fix availability: Available

Why this deserves its current priority

A CVSS score is not reported in the current record. 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). Check affected ranges and fixed versions before updating.

Mapped affected packages and fixed versions
Package	Affected range	Fixed version
Linux/Linuxgeneric	>=2ec6761df889fdf896fde761abd447596dd8f8c2 <fc933a4a419ba8a75da28666a018602c44846953 \|\| >=2ec6761df889fdf896fde761abd447596dd8f8c2 <fcd86180ef78b0e41763faef7c6d2de7dfb50c1a \|\| >=2ec6761df889fdf896fde761abd447596dd8f8c2 <94a25930477113730372e0fa2985da4c5ac95c9a	fc933a4a419ba8a75da28666a018602c44846953, fcd86180ef78b0e41763faef7c6d2de7dfb50c1a, 94a25930477113730372e0fa2985da4c5ac95c9a
Linux/Linuxgeneric	6.8	Not reported

Recommended response

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

Evidence timeline and material changes

Published upstream
Sep 11, 2026
Evidence: source:cvelist:source_dates:source-dates:record
Source modified
Sep 11, 2026
Evidence: source:cvelist:source_dates:source-dates:record
First seen by HOL
Sep 11, 2026

Sources and claim methodology

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.