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crypto: mxs-dcp - fix source scatterlist length access

Type: advisorySource: Official CVE List1 source record

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.

Announced Group revision 1
Original source ↗

CVE-2026-80831

Primary source · Revision 1

Imported from structured advisory data. Source references identify upstream records or fields; verify affected versions and your deployed configuration.

Security context

Source reference: cve:CVE-2026-80831

Linux

Source reference: /containers/cna/affected/0/product

Affected versions
Not stated in this record
Fixed versions
Not stated in this record
Prerequisites
Not stated in this record

Linux

Source reference: /containers/cna/affected/1/product

Affected versions
Not stated in this record
Fixed versions
Not stated in this record
Prerequisites
Not stated in this record

Structured affected-version data

Original package identities and version rules from this source.

[
  {
    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
    "vendor": "Linux",
    "product": "Linux",
    "versions": [
      {
        "status": "affected",
        "version": "15b59e7c3733f90ff1f7dd66ad77ae1c90bcdff5",
        "lessThan": "fd0f211b27a6ec2ebd8c315683401b43adcc5511",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "15b59e7c3733f90ff1f7dd66ad77ae1c90bcdff5",
        "lessThan": "04201dcc88b26eac52f736e39727fc5c420b7257",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "15b59e7c3733f90ff1f7dd66ad77ae1c90bcdff5",
        "lessThan": "e72a795df521cb65b7c4705cc11078cdacfaa2f4",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "15b59e7c3733f90ff1f7dd66ad77ae1c90bcdff5",
        "lessThan": "1537bd55b4f842565068c54b47cd2ae1777d5f8f",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "15b59e7c3733f90ff1f7dd66ad77ae1c90bcdff5",
        "lessThan": "da14fae5203b72ca71ccfa9af8de9249e40d533a",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "15b59e7c3733f90ff1f7dd66ad77ae1c90bcdff5",
        "lessThan": "182f16a20d329a1c818d51dad57d9bf43d356c7c",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "15b59e7c3733f90ff1f7dd66ad77ae1c90bcdff5",
        "lessThan": "0e9edb108a63bbbef952dfcbc597e34ed9c1fb74",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "15b59e7c3733f90ff1f7dd66ad77ae1c90bcdff5",
        "lessThan": "6ef9a4afb52cb102ab038cd42352c142d8505d09",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "15b59e7c3733f90ff1f7dd66ad77ae1c90bcdff5",
        "lessThan": "c5bcb084a9871e5b62afb5f48b60adfa13b5d9f8",
        "versionType": "git"
      }
    ],
    "programFiles": [
      "drivers/crypto/mxs-dcp.c"
    ],
    "defaultStatus": "unaffected"
  },
  {
    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
    "vendor": "Linux",
    "product": "Linux",
    "versions": [
      {
        "status": "affected",
        "version": "3.14"
      },
      {
        "status": "unaffected",
        "version": "0",
        "lessThan": "3.14",
        "versionType": "semver"
      },
      {
        "status": "unaffected",
        "version": "5.10.269",
        "versionType": "semver",
        "lessThanOrEqual": "5.10.*"
      },
      {
        "status": "unaffected",
        "version": "5.15.220",
        "versionType": "semver",
        "lessThanOrEqual": "5.15.*"
      },
      {
        "status": "unaffected",
        "version": "6.1.187",
        "versionType": "semver",
        "lessThanOrEqual": "6.1.*"
      },
      {
        "status": "unaffected",
        "version": "6.6.156",
        "versionType": "semver",
        "lessThanOrEqual": "6.6.*"
      },
      {
        "status": "unaffected",
        "version": "6.12.108",
        "versionType": "semver",
        "lessThanOrEqual": "6.12.*"
      },
      {
        "status": "unaffected",
        "version": "6.18.49",
        "versionType": "semver",
        "lessThanOrEqual": "6.18.*"
      },
      {
        "status": "unaffected",
        "version": "7.1.13",
        "versionType": "semver",
        "lessThanOrEqual": "7.1.*"
      },
      {
        "status": "unaffected",
        "version": "7.2.3",
        "versionType": "semver",
        "lessThanOrEqual": "7.2.*"
      },
      {
        "status": "unaffected",
        "version": "7.3",
        "versionType": "original_commit_for_fix",
        "lessThanOrEqual": "*"
      }
    ],
    "programFiles": [
      "drivers/crypto/mxs-dcp.c"
    ],
    "defaultStatus": "affected"
  }
]
Related CVEs
CVE-2026-80831

Source reference: /cveMetadata/cveId

Publisher severity

No explicit severity was provided.

Event
#34847 · Revision 1
Added to Heist Feed
Publisher date
Read the original announcement

Revision history

  1. CVE-2026-80831 · Revision 1Source updated