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FKIE_CVE-2026-80831

Vulnerability from fkie_nvd - Published: 2026-09-04 16:18 - Updated: 2026-09-04 16:18
Severity
Summary
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.
References
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/04201dcc88b26eac52f736e39727fc5c420b7257
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/0e9edb108a63bbbef952dfcbc597e34ed9c1fb74
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/1537bd55b4f842565068c54b47cd2ae1777d5f8f
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/182f16a20d329a1c818d51dad57d9bf43d356c7c
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/6ef9a4afb52cb102ab038cd42352c142d8505d09
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/c5bcb084a9871e5b62afb5f48b60adfa13b5d9f8
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/da14fae5203b72ca71ccfa9af8de9249e40d533a
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/e72a795df521cb65b7c4705cc11078cdacfaa2f4
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/fd0f211b27a6ec2ebd8c315683401b43adcc5511
Impacted products
Vendor Product Version
To clipboard 

{
  "affected": [
    {
      "affectedData": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "drivers/crypto/mxs-dcp.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThan": "fd0f211b27a6ec2ebd8c315683401b43adcc5511",
              "status": "affected",
              "version": "15b59e7c3733f90ff1f7dd66ad77ae1c90bcdff5",
              "versionType": "git"
            },
            {
              "lessThan": "04201dcc88b26eac52f736e39727fc5c420b7257",
              "status": "affected",
              "version": "15b59e7c3733f90ff1f7dd66ad77ae1c90bcdff5",
              "versionType": "git"
            },
            {
              "lessThan": "e72a795df521cb65b7c4705cc11078cdacfaa2f4",
              "status": "affected",
              "version": "15b59e7c3733f90ff1f7dd66ad77ae1c90bcdff5",
              "versionType": "git"
            },
            {
              "lessThan": "1537bd55b4f842565068c54b47cd2ae1777d5f8f",
              "status": "affected",
              "version": "15b59e7c3733f90ff1f7dd66ad77ae1c90bcdff5",
              "versionType": "git"
            },
            {
              "lessThan": "da14fae5203b72ca71ccfa9af8de9249e40d533a",
              "status": "affected",
              "version": "15b59e7c3733f90ff1f7dd66ad77ae1c90bcdff5",
              "versionType": "git"
            },
            {
              "lessThan": "182f16a20d329a1c818d51dad57d9bf43d356c7c",
              "status": "affected",
              "version": "15b59e7c3733f90ff1f7dd66ad77ae1c90bcdff5",
              "versionType": "git"
            },
            {
              "lessThan": "0e9edb108a63bbbef952dfcbc597e34ed9c1fb74",
              "status": "affected",
              "version": "15b59e7c3733f90ff1f7dd66ad77ae1c90bcdff5",
              "versionType": "git"
            },
            {
              "lessThan": "6ef9a4afb52cb102ab038cd42352c142d8505d09",
              "status": "affected",
              "version": "15b59e7c3733f90ff1f7dd66ad77ae1c90bcdff5",
              "versionType": "git"
            },
            {
              "lessThan": "c5bcb084a9871e5b62afb5f48b60adfa13b5d9f8",
              "status": "affected",
              "version": "15b59e7c3733f90ff1f7dd66ad77ae1c90bcdff5",
              "versionType": "git"
            }
          ]
        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "drivers/crypto/mxs-dcp.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "3.14"
            },
            {
              "lessThan": "3.14",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.10.*",
              "status": "unaffected",
              "version": "5.10.269",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.15.*",
              "status": "unaffected",
              "version": "5.15.220",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.1.*",
              "status": "unaffected",
              "version": "6.1.187",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.6.*",
              "status": "unaffected",
              "version": "6.6.156",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.12.*",
              "status": "unaffected",
              "version": "6.12.108",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.18.*",
              "status": "unaffected",
              "version": "6.18.49",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "7.1.*",
              "status": "unaffected",
              "version": "7.1.13",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "7.2.*",
              "status": "unaffected",
              "version": "7.2.3",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "7.3-rc1",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    }
  ],
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "In the Linux kernel, the following vulnerability has been resolved:\n\ncrypto: mxs-dcp - fix source scatterlist length access\n\nmxs_dcp_aes_block_crypt() uses sg_dma_len() without mapping the source\nscatterlist with dma_map_sg() first. Therefore, sg_dma_len() is invalid\nand could return zero or a stale DMA length, causing encryption and\ndecryption to process the wrong number of bytes when\nCONFIG_NEED_SG_DMA_LENGTH=y.\n\nUse the original scatterlist length instead."
    }
  ],
  "id": "CVE-2026-80831",
  "lastModified": "2026-09-04T16:18:11.287",
  "metrics": {},
  "published": "2026-09-04T16:18:11.287",
  "references": [
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/04201dcc88b26eac52f736e39727fc5c420b7257"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/0e9edb108a63bbbef952dfcbc597e34ed9c1fb74"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/1537bd55b4f842565068c54b47cd2ae1777d5f8f"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/182f16a20d329a1c818d51dad57d9bf43d356c7c"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/6ef9a4afb52cb102ab038cd42352c142d8505d09"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/c5bcb084a9871e5b62afb5f48b60adfa13b5d9f8"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/da14fae5203b72ca71ccfa9af8de9249e40d533a"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/e72a795df521cb65b7c4705cc11078cdacfaa2f4"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/fd0f211b27a6ec2ebd8c315683401b43adcc5511"
    }
  ],
  "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
  "vulnStatus": "Received"
}



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