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.

No CVSS v4.0

No CVSS v3.1

No CVSS v3.0

No CVSS v2

This CVE is not in the KEV list.

The EPSS score is 0.00165.

Key SSVC decision points have not yet been added.

Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).

Vendor Product Default status Versions
Linux Linux unaffected
Version Status Constraints
15b59e7c3733f90ff1f7dd66ad77ae1c90bcdff5 affected < fd0f211b27a6ec2ebd8c315683401b43adcc5511
15b59e7c3733f90ff1f7dd66ad77ae1c90bcdff5 affected < 04201dcc88b26eac52f736e39727fc5c420b7257
15b59e7c3733f90ff1f7dd66ad77ae1c90bcdff5 affected < e72a795df521cb65b7c4705cc11078cdacfaa2f4
15b59e7c3733f90ff1f7dd66ad77ae1c90bcdff5 affected < 1537bd55b4f842565068c54b47cd2ae1777d5f8f
15b59e7c3733f90ff1f7dd66ad77ae1c90bcdff5 affected < da14fae5203b72ca71ccfa9af8de9249e40d533a
15b59e7c3733f90ff1f7dd66ad77ae1c90bcdff5 affected < 182f16a20d329a1c818d51dad57d9bf43d356c7c
15b59e7c3733f90ff1f7dd66ad77ae1c90bcdff5 affected < 0e9edb108a63bbbef952dfcbc597e34ed9c1fb74
15b59e7c3733f90ff1f7dd66ad77ae1c90bcdff5 affected < 6ef9a4afb52cb102ab038cd42352c142d8505d09
15b59e7c3733f90ff1f7dd66ad77ae1c90bcdff5 affected < c5bcb084a9871e5b62afb5f48b60adfa13b5d9f8
Linux Linux affected
Version Status Constraints
3.14 affected —
0 unaffected < 3.14
5.10.269 unaffected ≤ 5.10.*
5.15.220 unaffected ≤ 5.15.*
6.1.187 unaffected ≤ 6.1.*
6.6.156 unaffected ≤ 6.6.*
6.12.108 unaffected ≤ 6.12.*
6.18.49 unaffected ≤ 6.18.*
7.1.13 unaffected ≤ 7.1.*
7.2.3 unaffected ≤ 7.2.*
7.3-rc1 unaffected ≤ *

No data.

No data.

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Advisories
Source ID Title
Debian DLA Debian DLA DLA-4777-1 linux security update
Fixes

Solution

No solution given by the vendor.

Workaround

No workaround given by the vendor.

References
Link Providers
https://git.kernel.org/stable/c/04201dcc88b26eac52f736e39727fc5c420b7257 cve-icon cve-icon
https://git.kernel.org/stable/c/0e9edb108a63bbbef952dfcbc597e34ed9c1fb74 cve-icon cve-icon
https://git.kernel.org/stable/c/1537bd55b4f842565068c54b47cd2ae1777d5f8f cve-icon cve-icon
https://git.kernel.org/stable/c/182f16a20d329a1c818d51dad57d9bf43d356c7c cve-icon cve-icon
https://git.kernel.org/stable/c/6ef9a4afb52cb102ab038cd42352c142d8505d09 cve-icon cve-icon
https://git.kernel.org/stable/c/c5bcb084a9871e5b62afb5f48b60adfa13b5d9f8 cve-icon cve-icon
https://git.kernel.org/stable/c/da14fae5203b72ca71ccfa9af8de9249e40d533a cve-icon cve-icon
https://git.kernel.org/stable/c/e72a795df521cb65b7c4705cc11078cdacfaa2f4 cve-icon cve-icon
https://git.kernel.org/stable/c/fd0f211b27a6ec2ebd8c315683401b43adcc5511 cve-icon cve-icon
History

Fri, 04 Sep 2026 19:15:00 +0000

Type Values Removed Values Added
Weaknesses CWE-193
CWE-665

Fri, 04 Sep 2026 16:00:00 +0000

Type Values Removed Values Added
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.
Title crypto: mxs-dcp - fix source scatterlist length access
First Time appeared Linux
Linux linux Kernel
CPEs cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
Vendors & Products Linux
Linux linux Kernel
References

Projects

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cve-icon MITRE

Status: PUBLISHED

Assigner: Linux

Published:

Updated: 2026-09-04T15:54:36.250Z

Reserved: 2026-08-26T14:34:25.796Z

Link: CVE-2026-80831

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Received

Published: 2026-09-04T16:18:11.287

Modified: 2026-09-04T16:18:11.287

Link: CVE-2026-80831

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-09-05T00:30:18Z

Weaknesses