CVE-2026-80831

crypto: mxs-dcp - fix source scatterlist length access

State: Published
Severity: Not scored
Published: Sep 4, 2026
Updated: Oct 19, 2026
Reserved: Aug 26, 2026

Description

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.

Scores

The record has no CVSS score.

Weaknesses

The record names no weakness.

Affected Products

Product	Versions
LinuxLinux	15b59e7c3733f90ff1f7dd66ad77ae1c90bcdff5 to before fd0f211b27a6ec2ebd8c315683401b43adcc5511Affected 15b59e7c3733f90ff1f7dd66ad77ae1c90bcdff5 to before 04201dcc88b26eac52f736e39727fc5c420b7257Affected 15b59e7c3733f90ff1f7dd66ad77ae1c90bcdff5 to before e72a795df521cb65b7c4705cc11078cdacfaa2f4Affected 15b59e7c3733f90ff1f7dd66ad77ae1c90bcdff5 to before 1537bd55b4f842565068c54b47cd2ae1777d5f8fAffected 15b59e7c3733f90ff1f7dd66ad77ae1c90bcdff5 to before da14fae5203b72ca71ccfa9af8de9249e40d533aAffected 15b59e7c3733f90ff1f7dd66ad77ae1c90bcdff5 to before 182f16a20d329a1c818d51dad57d9bf43d356c7cAffected 15b59e7c3733f90ff1f7dd66ad77ae1c90bcdff5 to before 0e9edb108a63bbbef952dfcbc597e34ed9c1fb74Affected 15b59e7c3733f90ff1f7dd66ad77ae1c90bcdff5 to before 6ef9a4afb52cb102ab038cd42352c142d8505d09Affected 15b59e7c3733f90ff1f7dd66ad77ae1c90bcdff5 to before c5bcb084a9871e5b62afb5f48b60adfa13b5d9f8Affected
LinuxLinux	3.14Affected before 3.14Not affected 5.10.269 through 5.10.Not affected 5.15.220 through 5.15.Not affected 6.1.187 through 6.1.Not affected 6.6.156 through 6.6.Not affected 6.12.108 through 6.12.Not affected 6.18.49 through 6.18.Not affected 7.1.13 through 7.1.Not affected 7.2.3 through 7.2.Not affected 7.3 and laterNot affected

Product

Versions

LinuxLinux

15b59e7c3733f90ff1f7dd66ad77ae1c90bcdff5 to before fd0f211b27a6ec2ebd8c315683401b43adcc5511Affected
15b59e7c3733f90ff1f7dd66ad77ae1c90bcdff5 to before 04201dcc88b26eac52f736e39727fc5c420b7257Affected
15b59e7c3733f90ff1f7dd66ad77ae1c90bcdff5 to before e72a795df521cb65b7c4705cc11078cdacfaa2f4Affected
15b59e7c3733f90ff1f7dd66ad77ae1c90bcdff5 to before 1537bd55b4f842565068c54b47cd2ae1777d5f8fAffected
15b59e7c3733f90ff1f7dd66ad77ae1c90bcdff5 to before da14fae5203b72ca71ccfa9af8de9249e40d533aAffected
15b59e7c3733f90ff1f7dd66ad77ae1c90bcdff5 to before 182f16a20d329a1c818d51dad57d9bf43d356c7cAffected
15b59e7c3733f90ff1f7dd66ad77ae1c90bcdff5 to before 0e9edb108a63bbbef952dfcbc597e34ed9c1fb74Affected
15b59e7c3733f90ff1f7dd66ad77ae1c90bcdff5 to before 6ef9a4afb52cb102ab038cd42352c142d8505d09Affected
15b59e7c3733f90ff1f7dd66ad77ae1c90bcdff5 to before c5bcb084a9871e5b62afb5f48b60adfa13b5d9f8Affected

LinuxLinux

3.14Affected
before 3.14Not affected
5.10.269 through 5.10.*Not affected
5.15.220 through 5.15.*Not affected
6.1.187 through 6.1.*Not affected
6.6.156 through 6.6.*Not affected
6.12.108 through 6.12.*Not affected
6.18.49 through 6.18.*Not affected
7.1.13 through 7.1.*Not affected
7.2.3 through 7.2.*Not affected
7.3 and laterNot affected

References

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