{
  "affected": [
    {
      "ranges": [
        {
          "events": [
            {
              "introduced": "85acac61096f946a78cf0c4b65f7cebe580693b6"
            },
            {
              "fixed": "2fc25a4c2e055cd42ea39a1b42c89bfef70e0319"
            },
            {
              "fixed": "9f39fa07259eb342908e4aa0271dee038a8ce4f8"
            },
            {
              "fixed": "f3f8ec00cfb8d8e826e30b1138a56355b88e9ba8"
            },
            {
              "fixed": "c16ac4e173a05011437a2d868f70cc415339065a"
            },
            {
              "fixed": "1bf8761eb59e94bf7b8c17b2a1ee48f14378b172"
            },
            {
              "fixed": "a47ae40339c1048f519df33ff8840731720f57cb"
            },
            {
              "fixed": "c8c607a77aab783f2e38cc2e0f24aa6c8f6d200b"
            },
            {
              "fixed": "cc797d4821c754c701d9714b58bea947e31dbbe0"
            }
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "type": "GIT"
        }
      ]
    },
    {
      "package": {
        "ecosystem": "Linux",
        "name": "Kernel"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "2.6.29"
            },
            {
              "fixed": "5.10.253"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "5.11.0"
            },
            {
              "fixed": "5.15.203"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "5.16.0"
            },
            {
              "fixed": "6.1.168"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.2.0"
            },
            {
              "fixed": "6.6.134"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.7.0"
            },
            {
              "fixed": "6.12.81"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.13.0"
            },
            {
              "fixed": "6.18.22"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.19.0"
            },
            {
              "fixed": "6.19.12"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "database_specific": {
    "cna_assigner": "Linux",
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/31xxx/CVE-2026-31748.json"
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\ncomedi: me_daq: Fix potential overrun of firmware buffer\n\n`me2600_xilinx_download()` loads the firmware that was requested by\n`request_firmware()`.  It is possible for it to overrun the source\nbuffer because it blindly trusts the file format.  It reads a data\nstream length from the first 4 bytes into variable `file_length` and\nreads the data stream contents of length `file_length` from offset 16\nonwards.  Although it checks that the supplied firmware is at least 16\nbytes long, it does not check that it is long enough to contain the data\nstream.\n\nAdd a test to ensure that the supplied firmware is long enough to\ncontain the header and the data stream.  On failure, log an error and\nreturn `-EINVAL`.",
  "id": "CVE-2026-31748",
  "modified": "2026-07-08T05:37:14.831758030Z",
  "published": "2026-05-01T14:14:41.545Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/1bf8761eb59e94bf7b8c17b2a1ee48f14378b172"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/2fc25a4c2e055cd42ea39a1b42c89bfef70e0319"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/9f39fa07259eb342908e4aa0271dee038a8ce4f8"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/a47ae40339c1048f519df33ff8840731720f57cb"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/c16ac4e173a05011437a2d868f70cc415339065a"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/c8c607a77aab783f2e38cc2e0f24aa6c8f6d200b"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/cc797d4821c754c701d9714b58bea947e31dbbe0"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/f3f8ec00cfb8d8e826e30b1138a56355b88e9ba8"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/31xxx/CVE-2026-31748.json"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-31748"
    },
    {
      "type": "PACKAGE",
      "url": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git"
    }
  ],
  "schema_version": "1.7.5",
  "summary": "comedi: me_daq: Fix potential overrun of firmware buffer"
}