{
  "affected": [
    {
      "ranges": [
        {
          "events": [
            {
              "introduced": "15b59e7c3733f90ff1f7dd66ad77ae1c90bcdff5"
            },
            {
              "fixed": "fd0f211b27a6ec2ebd8c315683401b43adcc5511"
            },
            {
              "fixed": "04201dcc88b26eac52f736e39727fc5c420b7257"
            },
            {
              "fixed": "e72a795df521cb65b7c4705cc11078cdacfaa2f4"
            },
            {
              "fixed": "1537bd55b4f842565068c54b47cd2ae1777d5f8f"
            },
            {
              "fixed": "da14fae5203b72ca71ccfa9af8de9249e40d533a"
            },
            {
              "fixed": "182f16a20d329a1c818d51dad57d9bf43d356c7c"
            },
            {
              "fixed": "0e9edb108a63bbbef952dfcbc597e34ed9c1fb74"
            },
            {
              "fixed": "6ef9a4afb52cb102ab038cd42352c142d8505d09"
            },
            {
              "fixed": "c5bcb084a9871e5b62afb5f48b60adfa13b5d9f8"
            }
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "type": "GIT"
        }
      ]
    },
    {
      "package": {
        "ecosystem": "Linux",
        "name": "Kernel"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "3.14.0"
            },
            {
              "fixed": "5.10.269"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "5.11.0"
            },
            {
              "fixed": "5.15.220"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "5.16.0"
            },
            {
              "fixed": "6.1.187"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.2.0"
            },
            {
              "fixed": "6.6.156"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.7.0"
            },
            {
              "fixed": "6.12.108"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.13.0"
            },
            {
              "fixed": "6.18.49"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.19.0"
            },
            {
              "fixed": "7.1.13"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "7.2.0"
            },
            {
              "fixed": "7.2.3"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "database_specific": {
    "cna_assigner": "Linux",
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/80xxx/CVE-2026-80831.json"
  },
  "details": "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",
  "modified": "2026-09-06T03:30:51.968641811Z",
  "published": "2026-09-04T15:54:36.250Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/04201dcc88b26eac52f736e39727fc5c420b7257"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/0e9edb108a63bbbef952dfcbc597e34ed9c1fb74"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/1537bd55b4f842565068c54b47cd2ae1777d5f8f"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/182f16a20d329a1c818d51dad57d9bf43d356c7c"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/6ef9a4afb52cb102ab038cd42352c142d8505d09"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/c5bcb084a9871e5b62afb5f48b60adfa13b5d9f8"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/da14fae5203b72ca71ccfa9af8de9249e40d533a"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/e72a795df521cb65b7c4705cc11078cdacfaa2f4"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/fd0f211b27a6ec2ebd8c315683401b43adcc5511"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/80xxx/CVE-2026-80831.json"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-80831"
    },
    {
      "type": "PACKAGE",
      "url": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git"
    }
  ],
  "schema_version": "1.9.0",
  "summary": "crypto: mxs-dcp - fix source scatterlist length access"
}