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CVE-2026-80945

9.1 · CRITICAL

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 so…

Published Sep 11, 2026EPSS 0.50%

Overview

CVE-2026-80945 is a critical-severity vulnerability. It was published on September 11, 2026 and has a CVSS 3.1 base score of 9.1 (CRITICAL).

This vulnerability has a CVSS 3.1 base score of 9.1, rated CRITICAL. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.

Technical 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.

Remediation

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

References

Refgit.kernel.org/stable/c/94a25930477113730372e0fa2985da4c5ac95c9aRefgit.kernel.org/stable/c/c0279e5ea2aad99d8b91f1a6579d751cc9eb2408Refgit.kernel.org/stable/c/fc933a4a419ba8a75da28666a018602c44846953Refgit.kernel.org/stable/c/fcd86180ef78b0e41763faef7c6d2de7dfb50c1a

How CyberStrike helps

Frequently asked questions

What is CVE-2026-80945?

CVE-2026-80945 is a critical-severity vulnerability. It was published on September 11, 2026 and has a CVSS 3.1 base score of 9.1 (CRITICAL).

How severe is CVE-2026-80945?

This vulnerability has a CVSS 3.1 base score of 9.1, rated CRITICAL. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.

How do I fix or remediate CVE-2026-80945?

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

How can CyberStrike help with CVE-2026-80945?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2026-80945 is actually reachable in your own applications and APIs, then verifies each finding before reporting it. That tells you if the weakness is a real, exploitable risk in your environment or a false positive you can safely deprioritize.

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