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

Vulnerability from cvelistv5 – Published: 2026-05-01 14:14 – Updated: 2026-05-01 14:14
VLAI?
Title
bridge: br_nd_send: validate ND option lengths
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.
Severity ?
No CVSS data available.
Assigner
References
Impacted products
Vendor Product Version
Linux 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)
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    Linux 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)
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          "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."
        }
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      "providerMetadata": {
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        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
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  }
}


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Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

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.