CVE-2026-80831

Not scored yetLast modified Oct 19, 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.

Metrics

No CVSS score has been published yet.

Affected software

Source: the vendor's advisory (CNA). NVD analysis pending.

VendorProductVersions
LinuxLinux>= 15b59e7c3733f90ff1f7dd66ad77ae1c90bcdff5, < fd0f211b27a6ec2ebd8c315683401b43adcc5511; >= 15b59e7c3733f90ff1f7dd66ad77ae1c90bcdff5, < 04201dcc88b26eac52f736e39727fc5c420b7257; >= 15b59e7c3733f90ff1f7dd66ad77ae1c90bcdff5, < e72a795df521cb65b7c4705cc11078cdacfaa2f4; >= 15b59e7c3733f90ff1f7dd66ad77ae1c90bcdff5, < 1537bd55b4f842565068c54b47cd2ae1777d5f8f; >= 15b59e7c3733f90ff1f7dd66ad77ae1c90bcdff5, < da14fae5203b72ca71ccfa9af8de9249e40d533a; >= 15b59e7c3733f90ff1f7dd66ad77ae1c90bcdff5, < 182f16a20d329a1c818d51dad57d9bf43d356c7c; >= 15b59e7c3733f90ff1f7dd66ad77ae1c90bcdff5, < 0e9edb108a63bbbef952dfcbc597e34ed9c1fb74; >= 15b59e7c3733f90ff1f7dd66ad77ae1c90bcdff5, < 6ef9a4afb52cb102ab038cd42352c142d8505d09; >= 15b59e7c3733f90ff1f7dd66ad77ae1c90bcdff5, < c5bcb084a9871e5b62afb5f48b60adfa13b5d9f8
LinuxLinux3.14

References

Timeline

Published
Sep 4, 2026
Last modified
Oct 19, 2026
NVD status
Received

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CVE-2026-80831: Unscored | Vulnix