Not yet scoredPublished Sep 4, 2026

CVE-2026-80831crypto: mxs-dcp - fix source scatterlist length access

Updated under an hour ago (Oct 27, 2026, 2:50 PM ET)

Does this affect you?

It affects Linux. Add what you run to find out whether that includes you.

No exploitation reported and no EPSS estimate yet.

Do this next

Start free and add your stack

Free account, 1 product

Every CVE for Linux

Exploited in the last 30 days

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.

CVSS: Not yet scored
Weakness (CWE): Not given
Known exploited: Not in CISA's KEV catalog
EPSS (exploitation in the next 30 days): Not loaded for this CVE
Assigned by: Linux
NVD analysis: Received
Record last updated: Oct 19, 2026
First seen by InfoSec Signals: Oct 9, 2026

Affected products

Affected products

Linux Linux linux:linux (from the name)	from 15b59e7c3733f90ff1f7dd66ad77ae1c90bcdff5 before fd0f211b27a6ec2ebd8c315683401b43adcc5511; from 15b59e7c3733f90ff1f7dd66ad77ae1c90bcdff5 before 04201dcc88b26eac52f736e39727fc5c420b7257; from 15b59e7c3733f90ff1f7dd66ad77ae1c90bcdff5 before e72a795df521cb65b7c4705cc11078cdacfaa2f4; from 15b59e7c3733f90ff1f7dd66ad77ae1c90bcdff5 before 1537bd55b4f842565068c54b47cd2ae1777d5f8f; from 15b59e7c3733f90ff1f7dd66ad77ae1c90bcdff5 before da14fae5203b72ca71ccfa9af8de9249e40d533a; from 15b59e7c3733f90ff1f7dd66ad77ae1c90bcdff5 before 182f16a20d329a1c818d51dad57d9bf43d356c7c; 15b59e7c3733f90ff1f7dd66ad77ae1c90bcdff5 builds before 0e9edb108a63bbbef952dfcbc597e34ed9c1fb74; 15b59e7c3733f90ff1f7dd66ad77ae1c90bcdff5 builds before 6ef9a4afb52cb102ab038cd42352c142d8505d09; and 1 more ranges	CNA record

References

References

https://git.kernel.org/stable/c/fd0f211b27a6ec2ebd8c315683401b43adcc5511
https://git.kernel.org/stable/c/04201dcc88b26eac52f736e39727fc5c420b7257
https://git.kernel.org/stable/c/e72a795df521cb65b7c4705cc11078cdacfaa2f4
https://git.kernel.org/stable/c/1537bd55b4f842565068c54b47cd2ae1777d5f8f
https://git.kernel.org/stable/c/da14fae5203b72ca71ccfa9af8de9249e40d533a
https://git.kernel.org/stable/c/182f16a20d329a1c818d51dad57d9bf43d356c7c
https://git.kernel.org/stable/c/0e9edb108a63bbbef952dfcbc597e34ed9c1fb74
https://git.kernel.org/stable/c/6ef9a4afb52cb102ab038cd42352c142d8505d09
https://git.kernel.org/stable/c/c5bcb084a9871e5b62afb5f48b60adfa13b5d9f8

The CVE record on cve.org NVD's entry

The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.