What is CVE-2026-80831?

CVE-2026-80831 is a unscored severity Linux kernel vulnerability, affecting Linux kernel versions from 3.14 onward and patched in 5.10.269, 5.15.220, 6.1.187 and others. CVE-2026-80831 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

What is the CVSS score for CVE-2026-80831?

CVE-2026-80831 has a CVSS score of pending NVD analysis out of 10, rated awaiting scoring severity.

Is there a patch available for CVE-2026-80831?

Yes, CVE-2026-80831 has been patched. Fixed versions include 5.10.269, 5.15.220, 6.1.187 and others. If you are running Linux kernel 3.14 or later up to the fix versions, apply the relevant patch for your kernel branch.

Is CVE-2026-80831 actively exploited?

CVE-2026-80831 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

CVE-2026-80831

In the Linux kernel, the following vulnerability has been resolved: crypto: mxs-dcp - fix source scatterlist length access mxs_dcp_aes_block_crypt() uses sg_dma_len() without mapping the source scatterlist with dma_map_sg() first. Therefore, sg_dma_len() is invalid and could return zero or a stale DMA length, causing encryption and decryption to process the wrong number of bytes when CONFIG_NEED_SG_DMA_LENGTH=y. Use the original scatterlist length instead.

Package Linux Kernel

Published 2026-09-04

Last modified 2026-10-19

Patch available

Yes

Affected versions

Linux kernel versions 3.14 and later are affected. Fixed in 5.10.269, 5.15.220, 6.1.187, 6.6.156, 6.12.108, 6.18.49, 7.1.13, 7.2.3, 7.3 and their respective stable series.

Affected from

≥ 3.14

Fixed in

✓ 5.10.269 5.10.x ✓ 5.15.220 5.15.x ✓ 6.1.187 6.1.x ✓ 6.6.156 6.6.x ✓ 6.12.108 6.12.x ✓ 6.18.49 6.18.x ✓ 7.1.13 7.1.x ✓ 7.2.3 7.2.x ✓ 7.3

References

9 total

Showing 5 of 9 references View all on NVD

Frequently asked questions

What is CVE-2026-80831?

CVE-2026-80831 is a unscored severity Linux kernel vulnerability . It affects Linux kernel versions from 3.14 onward and has been patched in 5.10.269, 5.15.220, 6.1.187 and others. CVE-2026-80831 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.
Is there a patch available for CVE-2026-80831?

Yes. CVE-2026-80831 has been patched. Fixed versions include 5.10.269, 5.15.220, 6.1.187 and others. If you are running Linux kernel 3.14 or later up to the fix versions, apply the relevant patch for your kernel branch.
Is CVE-2026-80831 actively exploited?

No. CVE-2026-80831 has not been confirmed as actively exploited. It is not listed in the CISA Known Exploited Vulnerabilities (KEV) catalog.