CVE-2026-46231 (GCVE-0-2026-46231)
Vulnerability from cvelistv5
Published
2026-05-28 09:40
Modified
2026-06-14 18:04
Severity ?
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.
Impacted products
Vendor Product Version
Linux Linux Version: 3db0decf1185357d6ab2256d0dede1ca9efda03d
Version: 3db0decf1185357d6ab2256d0dede1ca9efda03d
Version: 3db0decf1185357d6ab2256d0dede1ca9efda03d
Version: 3db0decf1185357d6ab2256d0dede1ca9efda03d
Version: 3db0decf1185357d6ab2256d0dede1ca9efda03d
Version: 3db0decf1185357d6ab2256d0dede1ca9efda03d
Version: 3db0decf1185357d6ab2256d0dede1ca9efda03d
Version: 3db0decf1185357d6ab2256d0dede1ca9efda03d
Version: 3fdd337ac0b277a1f40aa73b35283520f426e517
Version: 485eedfabc2aefac8f09f98a82ba1c1e3e202a6d
Version: 3.16.39   
Version: 4.4.217   
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{
  "containers": {
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          "defaultStatus": "unaffected",
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          "programFiles": [
            "net/batman-adv/bridge_loop_avoidance.c"
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            },
            {
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              "versionType": "semver"
            },
            {
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              "status": "affected",
              "version": "4.4.217",
              "versionType": "semver"
            }
          ]
        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "net/batman-adv/bridge_loop_avoidance.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "4.7"
            },
            {
              "lessThan": "4.7",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.10.*",
              "status": "unaffected",
              "version": "5.10.258",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.15.*",
              "status": "unaffected",
              "version": "5.15.209",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.1.*",
              "status": "unaffected",
              "version": "6.1.175",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.6.*",
              "status": "unaffected",
              "version": "6.6.140",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.12.*",
              "status": "unaffected",
              "version": "6.12.90",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.18.*",
              "status": "unaffected",
              "version": "6.18.32",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "7.0.*",
              "status": "unaffected",
              "version": "7.0.9",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "7.1",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "cpeApplicability": [
        {
          "nodes": [
            {
              "cpeMatch": [
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "5.10.258",
                  "versionStartIncluding": "4.7",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "5.15.209",
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                  "vulnerable": true
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                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.6.140",
                  "versionStartIncluding": "4.7",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
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                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.18.32",
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                  "vulnerable": true
                },
                {
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                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
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                  "vulnerable": true
                },
                {
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                  "versionStartIncluding": "3.16.39",
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                  "vulnerable": true
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              ],
              "negate": false,
              "operator": "OR"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "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."
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-06-14T18:04:27.129Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
        {
          "url": "https://git.kernel.org/stable/c/6c8b68a7ed667a63aa603ba4d3a7088be143007e"
        },
        {
          "url": "https://git.kernel.org/stable/c/769f413d374ff2b6ff6d8d8c37b4c1178e6cdf14"
        },
        {
          "url": "https://git.kernel.org/stable/c/2888c9a154123db0254ae4fb9bea570c7e1f2e06"
        },
        {
          "url": "https://git.kernel.org/stable/c/65419eb4259a26a3cd3f56fa0e3b3c113bf8c256"
        },
        {
          "url": "https://git.kernel.org/stable/c/fd0ca034c1e71ca7613cde9dd892836b2c2831bd"
        },
        {
          "url": "https://git.kernel.org/stable/c/0baf4b659cdc7305cf685b5a5d60f9e3816ab5d0"
        },
        {
          "url": "https://git.kernel.org/stable/c/7cccf4eb4f96d3c3af91a00b7a9caa652439542e"
        },
        {
          "url": "https://git.kernel.org/stable/c/ba9d20ee9076dac32c371116bacbe72480eb356c"
        }
      ],
      "title": "batman-adv: bla: put backbone reference on failed claim hash insert",
      "x_generator": {
        "engine": "bippy-1.2.0"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2026-46231",
    "datePublished": "2026-05-28T09:40:53.471Z",
    "dateReserved": "2026-05-13T15:03:33.106Z",
    "dateUpdated": "2026-06-14T18:04:27.129Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}


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