Vulnerability-Lookup

GHSA-3M8H-6HX2-2479

Vulnerability from github – Published: 2026-05-28 12:30 – Updated: 2026-06-10 21:31

Details

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

batman-adv: bla: put backbone reference on failed claim hash insert

When batadv_bla_add_claim() fails to insert a new claim into the hash, it leaked a reference to the backbone_gw for which the claim was intended. Call batadv_backbone_gw_put() on the error path to release the reference and avoid leaking the backbone_gw object.

Severity

5.5 (Medium)


                  
                    CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

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{
  "affected": [],
  "aliases": [
    "CVE-2026-46231"
  ],
  "database_specific": {
    "cwe_ids": [],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2026-05-28T10:16:38Z",
    "severity": "MODERATE"
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nbatman-adv: bla: put backbone reference on failed claim hash insert\n\nWhen batadv_bla_add_claim() fails to insert a new claim into the hash, it\nleaked a reference to the backbone_gw for which the claim was intended.\nCall batadv_backbone_gw_put() on the error path to release the reference\nand avoid leaking the backbone_gw object.",
  "id": "GHSA-3m8h-6hx2-2479",
  "modified": "2026-06-10T21:31:26Z",
  "published": "2026-05-28T12:30:33Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-46231"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/0baf4b659cdc7305cf685b5a5d60f9e3816ab5d0"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/2888c9a154123db0254ae4fb9bea570c7e1f2e06"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/65419eb4259a26a3cd3f56fa0e3b3c113bf8c256"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/6c8b68a7ed667a63aa603ba4d3a7088be143007e"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/769f413d374ff2b6ff6d8d8c37b4c1178e6cdf14"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/7cccf4eb4f96d3c3af91a00b7a9caa652439542e"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/ba9d20ee9076dac32c371116bacbe72480eb356c"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/fd0ca034c1e71ca7613cde9dd892836b2c2831bd"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
      "type": "CVSS_V3"
    }
  ]
}

CVE-2026-46231 (GCVE-0-2026-46231)

Vulnerability from cvelistv5 – Published: 2026-05-28 09:40 – Updated: 2026-06-14 18:04

Title

batman-adv: bla: put backbone reference on failed claim hash insert

Summary

In the Linux kernel, the following vulnerability has been resolved: batman-adv: bla: put backbone reference on failed claim hash insert When batadv_bla_add_claim() fails to insert a new claim into the hash, it leaked a reference to the backbone_gw for which the claim was intended. Call batadv_backbone_gw_put() on the error path to release the reference and avoid leaking the backbone_gw object.

Severity

No CVSS data available.

Assigner

Linux mitre root Scorecard

References

8 references

URL	Tags
https://git.kernel.org/stable/c/6c8b68a7ed667a63a…
https://git.kernel.org/stable/c/769f413d374ff2b6f…
https://git.kernel.org/stable/c/2888c9a154123db02…
https://git.kernel.org/stable/c/65419eb4259a26a3c…
https://git.kernel.org/stable/c/fd0ca034c1e71ca76…
https://git.kernel.org/stable/c/0baf4b659cdc7305c…
https://git.kernel.org/stable/c/7cccf4eb4f96d3c3a…
https://git.kernel.org/stable/c/ba9d20ee9076dac32…

Impacted products

2 products

Vendor	Product	Version
Linux	Linux	Affected: 3db0decf1185357d6ab2256d0dede1ca9efda03d , < 6c8b68a7ed667a63aa603ba4d3a7088be143007e (git) Affected: 3db0decf1185357d6ab2256d0dede1ca9efda03d , < 769f413d374ff2b6ff6d8d8c37b4c1178e6cdf14 (git) Affected: 3db0decf1185357d6ab2256d0dede1ca9efda03d , < 2888c9a154123db0254ae4fb9bea570c7e1f2e06 (git) Affected: 3db0decf1185357d6ab2256d0dede1ca9efda03d , < 65419eb4259a26a3cd3f56fa0e3b3c113bf8c256 (git) Affected: 3db0decf1185357d6ab2256d0dede1ca9efda03d , < fd0ca034c1e71ca7613cde9dd892836b2c2831bd (git) Affected: 3db0decf1185357d6ab2256d0dede1ca9efda03d , < 0baf4b659cdc7305cf685b5a5d60f9e3816ab5d0 (git) Affected: 3db0decf1185357d6ab2256d0dede1ca9efda03d , < 7cccf4eb4f96d3c3af91a00b7a9caa652439542e (git) Affected: 3db0decf1185357d6ab2256d0dede1ca9efda03d , < ba9d20ee9076dac32c371116bacbe72480eb356c (git) Affected: 3fdd337ac0b277a1f40aa73b35283520f426e517 (git) Affected: 485eedfabc2aefac8f09f98a82ba1c1e3e202a6d (git) Affected: 3.16.39 , < 3.17 (semver) Affected: 4.4.217 , < 4.5 (semver)
Linux	Linux	Affected: 4.7 Unaffected: 0 , < 4.7 (semver) Unaffected: 5.10.258 , ≤ 5.10.* (semver) Unaffected: 5.15.209 , ≤ 5.15.* (semver) Unaffected: 6.1.175 , ≤ 6.1.* (semver) Unaffected: 6.6.140 , ≤ 6.6.* (semver) Unaffected: 6.12.90 , ≤ 6.12.* (semver) Unaffected: 6.18.32 , ≤ 6.18.* (semver) Unaffected: 7.0.9 , ≤ 7.0.* (semver) Unaffected: 7.1 , ≤ * (original_commit_for_fix)

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{
  "containers": {
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        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "net/batman-adv/bridge_loop_avoidance.c"
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              "status": "affected",
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              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
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              "versionType": "semver"
            },
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              "lessThanOrEqual": "5.15.*",
              "status": "unaffected",
              "version": "5.15.209",
              "versionType": "semver"
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              "versionType": "semver"
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              "status": "unaffected",
              "version": "6.18.32",
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            },
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              "status": "unaffected",
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              "versionType": "original_commit_for_fix"
            }
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        }
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}

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.

The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base model, served locally by ML-Gateway. They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
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GHSA-3M8H-6HX2-2479

CVE-2026-46231 (GCVE-0-2026-46231)

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Sightings

Nomenclature

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