Vulnerability-Lookup

GHSA-P8VF-HR52-WPWH

Vulnerability from github – Published: 2026-05-01 15:30 – Updated: 2026-05-01 15:30

Details

In the Linux kernel, the following vulnerability has been resolved:

comedi: me_daq: Fix potential overrun of firmware buffer

me2600_xilinx_download() loads the firmware that was requested by request_firmware(). It is possible for it to overrun the source buffer because it blindly trusts the file format. It reads a data stream length from the first 4 bytes into variable file_length and reads the data stream contents of length file_length from offset 16 onwards. Although it checks that the supplied firmware is at least 16 bytes long, it does not check that it is long enough to contain the data stream.

Add a test to ensure that the supplied firmware is long enough to contain the header and the data stream. On failure, log an error and return -EINVAL.

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{
  "affected": [],
  "aliases": [
    "CVE-2026-31748"
  ],
  "database_specific": {
    "cwe_ids": [],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2026-05-01T15:16:37Z",
    "severity": null
  },
  "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": "GHSA-p8vf-hr52-wpwh",
  "modified": "2026-05-01T15:30:34Z",
  "published": "2026-05-01T15:30:34Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-31748"
    },
    {
      "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"
    }
  ],
  "schema_version": "1.4.0",
  "severity": []
}

CVE-2026-31748 (GCVE-0-2026-31748)

Vulnerability from cvelistv5 – Published: 2026-05-01 14:14 – Updated: 2026-05-01 14:14

Title

comedi: me_daq: Fix potential overrun of firmware buffer

Summary

In the Linux kernel, the following vulnerability has been resolved: comedi: me_daq: Fix potential overrun of firmware buffer `me2600_xilinx_download()` loads the firmware that was requested by `request_firmware()`. It is possible for it to overrun the source buffer because it blindly trusts the file format. It reads a data stream length from the first 4 bytes into variable `file_length` and reads the data stream contents of length `file_length` from offset 16 onwards. Although it checks that the supplied firmware is at least 16 bytes long, it does not check that it is long enough to contain the data stream. Add a test to ensure that the supplied firmware is long enough to contain the header and the data stream. On failure, log an error and return `-EINVAL`.

Severity ?

No CVSS data available.

Assigner

Linux

References

URL

Tags

	https://git.kernel.org/stable/c/2fc25a4c2e055cd42…
	https://git.kernel.org/stable/c/9f39fa07259eb3429…
	https://git.kernel.org/stable/c/f3f8ec00cfb8d8e82…
	https://git.kernel.org/stable/c/c16ac4e173a050114…
	https://git.kernel.org/stable/c/1bf8761eb59e94bf7…
	https://git.kernel.org/stable/c/a47ae40339c1048f5…
	https://git.kernel.org/stable/c/c8c607a77aab783f2…
	https://git.kernel.org/stable/c/cc797d4821c754c70…

Impacted products

Vendor

Product

Version

Linux

Affected: 85acac61096f946a78cf0c4b65f7cebe580693b6 , < 2fc25a4c2e055cd42ea39a1b42c89bfef70e0319 (git)
Affected: 85acac61096f946a78cf0c4b65f7cebe580693b6 , < 9f39fa07259eb342908e4aa0271dee038a8ce4f8 (git)
Affected: 85acac61096f946a78cf0c4b65f7cebe580693b6 , < f3f8ec00cfb8d8e826e30b1138a56355b88e9ba8 (git)
Affected: 85acac61096f946a78cf0c4b65f7cebe580693b6 , < c16ac4e173a05011437a2d868f70cc415339065a (git)
Affected: 85acac61096f946a78cf0c4b65f7cebe580693b6 , < 1bf8761eb59e94bf7b8c17b2a1ee48f14378b172 (git)
Affected: 85acac61096f946a78cf0c4b65f7cebe580693b6 , < a47ae40339c1048f519df33ff8840731720f57cb (git)
Affected: 85acac61096f946a78cf0c4b65f7cebe580693b6 , < c8c607a77aab783f2e38cc2e0f24aa6c8f6d200b (git)
Affected: 85acac61096f946a78cf0c4b65f7cebe580693b6 , < cc797d4821c754c701d9714b58bea947e31dbbe0 (git)

Linux

Affected: 2.6.29
Unaffected: 0 , < 2.6.29 (semver)
Unaffected: 5.10.253 , ≤ 5.10.* (semver)
Unaffected: 5.15.203 , ≤ 5.15.* (semver)
Unaffected: 6.1.168 , ≤ 6.1.* (semver)
Unaffected: 6.6.134 , ≤ 6.6.* (semver)
Unaffected: 6.12.81 , ≤ 6.12.* (semver)
Unaffected: 6.18.22 , ≤ 6.18.* (semver)
Unaffected: 6.19.12 , ≤ 6.19.* (semver)
Unaffected: 7.0 , ≤ * (original_commit_for_fix)

Show details on NVD website

JSON

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{
  "containers": {
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "drivers/comedi/drivers/me_daq.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThan": "2fc25a4c2e055cd42ea39a1b42c89bfef70e0319",
              "status": "affected",
              "version": "85acac61096f946a78cf0c4b65f7cebe580693b6",
              "versionType": "git"
            },
            {
              "lessThan": "9f39fa07259eb342908e4aa0271dee038a8ce4f8",
              "status": "affected",
              "version": "85acac61096f946a78cf0c4b65f7cebe580693b6",
              "versionType": "git"
            },
            {
              "lessThan": "f3f8ec00cfb8d8e826e30b1138a56355b88e9ba8",
              "status": "affected",
              "version": "85acac61096f946a78cf0c4b65f7cebe580693b6",
              "versionType": "git"
            },
            {
              "lessThan": "c16ac4e173a05011437a2d868f70cc415339065a",
              "status": "affected",
              "version": "85acac61096f946a78cf0c4b65f7cebe580693b6",
              "versionType": "git"
            },
            {
              "lessThan": "1bf8761eb59e94bf7b8c17b2a1ee48f14378b172",
              "status": "affected",
              "version": "85acac61096f946a78cf0c4b65f7cebe580693b6",
              "versionType": "git"
            },
            {
              "lessThan": "a47ae40339c1048f519df33ff8840731720f57cb",
              "status": "affected",
              "version": "85acac61096f946a78cf0c4b65f7cebe580693b6",
              "versionType": "git"
            },
            {
              "lessThan": "c8c607a77aab783f2e38cc2e0f24aa6c8f6d200b",
              "status": "affected",
              "version": "85acac61096f946a78cf0c4b65f7cebe580693b6",
              "versionType": "git"
            },
            {
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              "status": "affected",
              "version": "85acac61096f946a78cf0c4b65f7cebe580693b6",
              "versionType": "git"
            }
          ]
        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "drivers/comedi/drivers/me_daq.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "2.6.29"
            },
            {
              "lessThan": "2.6.29",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.10.*",
              "status": "unaffected",
              "version": "5.10.253",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.15.*",
              "status": "unaffected",
              "version": "5.15.203",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.1.*",
              "status": "unaffected",
              "version": "6.1.168",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.6.*",
              "status": "unaffected",
              "version": "6.6.134",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.12.*",
              "status": "unaffected",
              "version": "6.12.81",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.18.*",
              "status": "unaffected",
              "version": "6.18.22",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.19.*",
              "status": "unaffected",
              "version": "6.19.12",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "7.0",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "cpeApplicability": [
        {
          "nodes": [
            {
              "cpeMatch": [
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "5.10.253",
                  "versionStartIncluding": "2.6.29",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "5.15.203",
                  "versionStartIncluding": "2.6.29",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.1.168",
                  "versionStartIncluding": "2.6.29",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.6.134",
                  "versionStartIncluding": "2.6.29",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.12.81",
                  "versionStartIncluding": "2.6.29",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.18.22",
                  "versionStartIncluding": "2.6.29",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.19.12",
                  "versionStartIncluding": "2.6.29",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "7.0",
                  "versionStartIncluding": "2.6.29",
                  "vulnerable": true
                }
              ],
              "negate": false,
              "operator": "OR"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "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`."
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-05-01T14:14:41.545Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
        {
          "url": "https://git.kernel.org/stable/c/2fc25a4c2e055cd42ea39a1b42c89bfef70e0319"
        },
        {
          "url": "https://git.kernel.org/stable/c/9f39fa07259eb342908e4aa0271dee038a8ce4f8"
        },
        {
          "url": "https://git.kernel.org/stable/c/f3f8ec00cfb8d8e826e30b1138a56355b88e9ba8"
        },
        {
          "url": "https://git.kernel.org/stable/c/c16ac4e173a05011437a2d868f70cc415339065a"
        },
        {
          "url": "https://git.kernel.org/stable/c/1bf8761eb59e94bf7b8c17b2a1ee48f14378b172"
        },
        {
          "url": "https://git.kernel.org/stable/c/a47ae40339c1048f519df33ff8840731720f57cb"
        },
        {
          "url": "https://git.kernel.org/stable/c/c8c607a77aab783f2e38cc2e0f24aa6c8f6d200b"
        },
        {
          "url": "https://git.kernel.org/stable/c/cc797d4821c754c701d9714b58bea947e31dbbe0"
        }
      ],
      "title": "comedi: me_daq: Fix potential overrun of firmware buffer",
      "x_generator": {
        "engine": "bippy-1.2.0"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2026-31748",
    "datePublished": "2026-05-01T14:14:41.545Z",
    "dateReserved": "2026-03-09T15:48:24.138Z",
    "dateUpdated": "2026-05-01T14:14:41.545Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}

Sightings

Author	Source	Type	Date	Other

Nomenclature

Seen: The vulnerability was mentioned, discussed, or observed by the user.
Confirmed: The vulnerability has been validated from an analyst's perspective.
Published Proof of Concept: A public proof of concept is available for this vulnerability.
Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
Not confirmed: The user expressed doubt about the validity of the vulnerability.
Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.

Detection rules are retrieved from Rulezet.

Action not permitted

GHSA-P8VF-HR52-WPWH

CVE-2026-31748 (GCVE-0-2026-31748)

Tags

Sightings

Nomenclature