Vulnerability-Lookup

FKIE_CVE-2026-31752

Vulnerability from fkie_nvd - Published: 2026-05-01 15:16 - Updated: 2026-05-01 15:24

Severity ?

Summary

In the Linux kernel, the following vulnerability has been resolved: bridge: br_nd_send: validate ND option lengths br_nd_send() walks ND options according to option-provided lengths. A malformed option can make the parser advance beyond the computed option span or use a too-short source LLADDR option payload. Validate option lengths against the remaining NS option area before advancing, and only read source LLADDR when the option is large enough for an Ethernet address.

References

	URL	Tags
	416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/259466f76f5a2148aff11134e68f4b4c6d52725b
	416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/82a42eceec7c6bdb0e0da94c0542a173b7ea57f2
	416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/837392a38445729c22e03d3abcf33f07763efd85
	416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/850837965af15707fd3142c1cf3c5bfaf022299b
	416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/c49b9256bbacb6a135654aebd12e4c0e87166b7c
	416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/e0bfd6d4dc77ab345b6c65eef0cfe9b2f69085aa
	416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/e71303a9190496136e240c4f2872b7b0b16027a7
	416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/ee02d8991fd7bd86ed6ebd0deb4aab53feb0e43a

Impacted products

	Vendor	Product	Version

JSON

To clipboard

{
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nbridge: br_nd_send: validate ND option lengths\n\nbr_nd_send() walks ND options according to option-provided lengths.\nA malformed option can make the parser advance beyond the computed\noption span or use a too-short source LLADDR option payload.\n\nValidate option lengths against the remaining NS option area before\nadvancing, and only read source LLADDR when the option is large enough\nfor an Ethernet address."
    }
  ],
  "id": "CVE-2026-31752",
  "lastModified": "2026-05-01T15:24:14.893",
  "metrics": {},
  "published": "2026-05-01T15:16:38.090",
  "references": [
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/259466f76f5a2148aff11134e68f4b4c6d52725b"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/82a42eceec7c6bdb0e0da94c0542a173b7ea57f2"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/837392a38445729c22e03d3abcf33f07763efd85"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/850837965af15707fd3142c1cf3c5bfaf022299b"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/c49b9256bbacb6a135654aebd12e4c0e87166b7c"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/e0bfd6d4dc77ab345b6c65eef0cfe9b2f69085aa"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/e71303a9190496136e240c4f2872b7b0b16027a7"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/ee02d8991fd7bd86ed6ebd0deb4aab53feb0e43a"
    }
  ],
  "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
  "vulnStatus": "Awaiting Analysis"
}

CVE-2026-31752 (GCVE-0-2026-31752)

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

Title

bridge: br_nd_send: validate ND option lengths

Summary

Severity ?

No CVSS data available.

Assigner

Linux

References

URL

Tags

	https://git.kernel.org/stable/c/82a42eceec7c6bdb0…
	https://git.kernel.org/stable/c/259466f76f5a2148a…
	https://git.kernel.org/stable/c/ee02d8991fd7bd86e…
	https://git.kernel.org/stable/c/e0bfd6d4dc77ab345…
	https://git.kernel.org/stable/c/c49b9256bbacb6a13…
	https://git.kernel.org/stable/c/837392a38445729c2…
	https://git.kernel.org/stable/c/e71303a9190496136…
	https://git.kernel.org/stable/c/850837965af15707f…

Impacted products

Vendor

Product

Version

Linux

Affected: ed842faeb2bd49256f00485402f3113205f91d30 , < 82a42eceec7c6bdb0e0da94c0542a173b7ea57f2 (git)
Affected: ed842faeb2bd49256f00485402f3113205f91d30 , < 259466f76f5a2148aff11134e68f4b4c6d52725b (git)
Affected: ed842faeb2bd49256f00485402f3113205f91d30 , < ee02d8991fd7bd86ed6ebd0deb4aab53feb0e43a (git)
Affected: ed842faeb2bd49256f00485402f3113205f91d30 , < e0bfd6d4dc77ab345b6c65eef0cfe9b2f69085aa (git)
Affected: ed842faeb2bd49256f00485402f3113205f91d30 , < c49b9256bbacb6a135654aebd12e4c0e87166b7c (git)
Affected: ed842faeb2bd49256f00485402f3113205f91d30 , < 837392a38445729c22e03d3abcf33f07763efd85 (git)
Affected: ed842faeb2bd49256f00485402f3113205f91d30 , < e71303a9190496136e240c4f2872b7b0b16027a7 (git)
Affected: ed842faeb2bd49256f00485402f3113205f91d30 , < 850837965af15707fd3142c1cf3c5bfaf022299b (git)

Linux

Affected: 4.15
Unaffected: 0 , < 4.15 (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

To clipboard

{
  "containers": {
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "net/bridge/br_arp_nd_proxy.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThan": "82a42eceec7c6bdb0e0da94c0542a173b7ea57f2",
              "status": "affected",
              "version": "ed842faeb2bd49256f00485402f3113205f91d30",
              "versionType": "git"
            },
            {
              "lessThan": "259466f76f5a2148aff11134e68f4b4c6d52725b",
              "status": "affected",
              "version": "ed842faeb2bd49256f00485402f3113205f91d30",
              "versionType": "git"
            },
            {
              "lessThan": "ee02d8991fd7bd86ed6ebd0deb4aab53feb0e43a",
              "status": "affected",
              "version": "ed842faeb2bd49256f00485402f3113205f91d30",
              "versionType": "git"
            },
            {
              "lessThan": "e0bfd6d4dc77ab345b6c65eef0cfe9b2f69085aa",
              "status": "affected",
              "version": "ed842faeb2bd49256f00485402f3113205f91d30",
              "versionType": "git"
            },
            {
              "lessThan": "c49b9256bbacb6a135654aebd12e4c0e87166b7c",
              "status": "affected",
              "version": "ed842faeb2bd49256f00485402f3113205f91d30",
              "versionType": "git"
            },
            {
              "lessThan": "837392a38445729c22e03d3abcf33f07763efd85",
              "status": "affected",
              "version": "ed842faeb2bd49256f00485402f3113205f91d30",
              "versionType": "git"
            },
            {
              "lessThan": "e71303a9190496136e240c4f2872b7b0b16027a7",
              "status": "affected",
              "version": "ed842faeb2bd49256f00485402f3113205f91d30",
              "versionType": "git"
            },
            {
              "lessThan": "850837965af15707fd3142c1cf3c5bfaf022299b",
              "status": "affected",
              "version": "ed842faeb2bd49256f00485402f3113205f91d30",
              "versionType": "git"
            }
          ]
        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "net/bridge/br_arp_nd_proxy.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "4.15"
            },
            {
              "lessThan": "4.15",
              "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": "4.15",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "5.15.203",
                  "versionStartIncluding": "4.15",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.1.168",
                  "versionStartIncluding": "4.15",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.6.134",
                  "versionStartIncluding": "4.15",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.12.81",
                  "versionStartIncluding": "4.15",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.18.22",
                  "versionStartIncluding": "4.15",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.19.12",
                  "versionStartIncluding": "4.15",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "7.0",
                  "versionStartIncluding": "4.15",
                  "vulnerable": true
                }
              ],
              "negate": false,
              "operator": "OR"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nbridge: br_nd_send: validate ND option lengths\n\nbr_nd_send() walks ND options according to option-provided lengths.\nA malformed option can make the parser advance beyond the computed\noption span or use a too-short source LLADDR option payload.\n\nValidate option lengths against the remaining NS option area before\nadvancing, and only read source LLADDR when the option is large enough\nfor an Ethernet address."
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-05-01T14:14:44.298Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
        {
          "url": "https://git.kernel.org/stable/c/82a42eceec7c6bdb0e0da94c0542a173b7ea57f2"
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          "url": "https://git.kernel.org/stable/c/259466f76f5a2148aff11134e68f4b4c6d52725b"
        },
        {
          "url": "https://git.kernel.org/stable/c/ee02d8991fd7bd86ed6ebd0deb4aab53feb0e43a"
        },
        {
          "url": "https://git.kernel.org/stable/c/e0bfd6d4dc77ab345b6c65eef0cfe9b2f69085aa"
        },
        {
          "url": "https://git.kernel.org/stable/c/c49b9256bbacb6a135654aebd12e4c0e87166b7c"
        },
        {
          "url": "https://git.kernel.org/stable/c/837392a38445729c22e03d3abcf33f07763efd85"
        },
        {
          "url": "https://git.kernel.org/stable/c/e71303a9190496136e240c4f2872b7b0b16027a7"
        },
        {
          "url": "https://git.kernel.org/stable/c/850837965af15707fd3142c1cf3c5bfaf022299b"
        }
      ],
      "title": "bridge: br_nd_send: validate ND option lengths",
      "x_generator": {
        "engine": "bippy-1.2.0"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2026-31752",
    "datePublished": "2026-05-01T14:14:44.298Z",
    "dateReserved": "2026-03-09T15:48:24.139Z",
    "dateUpdated": "2026-05-01T14:14:44.298Z",
    "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

FKIE_CVE-2026-31752

CVE-2026-31752 (GCVE-0-2026-31752)

Tags

Sightings

Nomenclature