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CVE-2026-64091 batman-adv: tt: fix TOCTOU race for reported vlans

🗓️ 19 Jul 2026 15:40:00Reported by LinuxType 
cvelist
 cvelist
🔗 www.cve.org👁 50 Views

Fix TOCTOU race in batman-adv tt for VLANs by overestimating buffer size and filling only nonempty.

Related
Affected
Refs
[
  {
    "product": "Linux",
    "vendor": "Linux",
    "defaultStatus": "unaffected",
    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
    "programFiles": [
      "net/batman-adv/translation-table.c"
    ],
    "versions": [
      {
        "version": "16116dac23396e73c01eeee97b102e4833a4b205",
        "lessThan": "e4236bf3ec8d6bb15d0d8d825dcf9933a7d6666b",
        "status": "affected",
        "versionType": "git"
      },
      {
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        "status": "affected",
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      },
      {
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      },
      {
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      },
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      },
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      },
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      {
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      },
      {
        "version": "90ae6475b1753f0c1a4c66034b5666de3189fac8",
        "status": "affected",
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      },
      {
        "version": "3.16.60",
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        "status": "affected",
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      },
      {
        "version": "4.4.217",
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      },
      {
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      },
      {
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      }
    ]
  },
  {
    "product": "Linux",
    "vendor": "Linux",
    "defaultStatus": "affected",
    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
    "programFiles": [
      "net/batman-adv/translation-table.c"
    ],
    "versions": [
      {
        "version": "4.17",
        "status": "affected"
      },
      {
        "version": "0",
        "lessThan": "4.17",
        "status": "unaffected",
        "versionType": "semver"
      },
      {
        "version": "5.10.259",
        "lessThanOrEqual": "5.10.*",
        "status": "unaffected",
        "versionType": "semver"
      },
      {
        "version": "5.15.210",
        "lessThanOrEqual": "5.15.*",
        "status": "unaffected",
        "versionType": "semver"
      },
      {
        "version": "6.1.176",
        "lessThanOrEqual": "6.1.*",
        "status": "unaffected",
        "versionType": "semver"
      },
      {
        "version": "6.6.143",
        "lessThanOrEqual": "6.6.*",
        "status": "unaffected",
        "versionType": "semver"
      },
      {
        "version": "6.12.93",
        "lessThanOrEqual": "6.12.*",
        "status": "unaffected",
        "versionType": "semver"
      },
      {
        "version": "6.18.34",
        "lessThanOrEqual": "6.18.*",
        "status": "unaffected",
        "versionType": "semver"
      },
      {
        "version": "7.0.11",
        "lessThanOrEqual": "7.0.*",
        "status": "unaffected",
        "versionType": "semver"
      },
      {
        "version": "7.1",
        "lessThanOrEqual": "*",
        "status": "unaffected",
        "versionType": "original_commit_for_fix"
      }
    ]
  }
]

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05 Aug 2026 12:39Current
CVSS 3.19.8
EPSS0.00583
50