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batman-adv: ensure minimal ethernet header on TX

Type: advisorySource: Official CVE List1 source record

In the Linux kernel, the following vulnerability has been resolved: batman-adv: ensure minimal ethernet header on TX As documented in commit 8bd67ebb50c0 ("net: bridge: xmit: make sure we have at least eth header len bytes"), it is possible by for a local user with eBPF TC hook access to attach a tc filter which truncates the packet and redirects to an batadv interface. But the code assumes that at least ETH_HLEN bytes are available and thus might read outside of the available buffer. The batadv_interface_tx() must therefore always check itself if enough data is available for the ethernet header and don't rely on min_header_len.

Announced Source revision 1
Original source ↗

CVE-2026-72232

Primary source · Revision 1

Imported from structured advisory data. Source references identify upstream records or fields; verify affected versions and your deployed configuration.

Security context

Source reference: cve:CVE-2026-72232

Linux

Source reference: /containers/cna/affected/0/product

Affected versions
Not stated in this record
Fixed versions
Not stated in this record
Prerequisites
Not stated in this record

Linux

Source reference: /containers/cna/affected/1/product

Affected versions
Not stated in this record
Fixed versions
Not stated in this record
Prerequisites
Not stated in this record

Structured affected-version data

Original package identities and version rules from this source.

[
  {
    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
    "vendor": "Linux",
    "product": "Linux",
    "versions": [
      {
        "status": "affected",
        "version": "c6c8fea29769d998d94fcec9b9f14d4b52b349d3",
        "lessThan": "58799078afebd5115e052bf69ad6697f9759dd6f",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "c6c8fea29769d998d94fcec9b9f14d4b52b349d3",
        "lessThan": "38cd10b0aeec755d89f78722a2b83f4088ff0cb0",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "c6c8fea29769d998d94fcec9b9f14d4b52b349d3",
        "lessThan": "811fea37620f2097955d95ce81cfdba03fd30f1b",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "c6c8fea29769d998d94fcec9b9f14d4b52b349d3",
        "lessThan": "e6640923afee619d9fa82b07394dc9498e202304",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "c6c8fea29769d998d94fcec9b9f14d4b52b349d3",
        "lessThan": "6b4f521e01257387906f8b969ad3450d8208d4e2",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "c6c8fea29769d998d94fcec9b9f14d4b52b349d3",
        "lessThan": "9e16b6751a8206de0b865d99bb02771e6751d12d",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "c6c8fea29769d998d94fcec9b9f14d4b52b349d3",
        "lessThan": "dbeb4145d9778f922f459935da9a027750765a69",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "c6c8fea29769d998d94fcec9b9f14d4b52b349d3",
        "lessThan": "49df66b7993c80b80c7eb9a84ba5b3410c8296a0",
        "versionType": "git"
      }
    ],
    "programFiles": [
      "net/batman-adv/mesh-interface.c"
    ],
    "defaultStatus": "unaffected"
  },
  {
    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
    "vendor": "Linux",
    "product": "Linux",
    "versions": [
      {
        "status": "affected",
        "version": "2.6.38"
      },
      {
        "status": "unaffected",
        "version": "0",
        "lessThan": "2.6.38",
        "versionType": "semver"
      },
      {
        "status": "unaffected",
        "version": "5.10.261",
        "versionType": "semver",
        "lessThanOrEqual": "5.10.*"
      },
      {
        "status": "unaffected",
        "version": "5.15.212",
        "versionType": "semver",
        "lessThanOrEqual": "5.15.*"
      },
      {
        "status": "unaffected",
        "version": "6.1.178",
        "versionType": "semver",
        "lessThanOrEqual": "6.1.*"
      },
      {
        "status": "unaffected",
        "version": "6.6.145",
        "versionType": "semver",
        "lessThanOrEqual": "6.6.*"
      },
      {
        "status": "unaffected",
        "version": "6.12.97",
        "versionType": "semver",
        "lessThanOrEqual": "6.12.*"
      },
      {
        "status": "unaffected",
        "version": "6.18.40",
        "versionType": "semver",
        "lessThanOrEqual": "6.18.*"
      },
      {
        "status": "unaffected",
        "version": "7.1.5",
        "versionType": "semver",
        "lessThanOrEqual": "7.1.*"
      },
      {
        "status": "unaffected",
        "version": "7.2",
        "versionType": "original_commit_for_fix",
        "lessThanOrEqual": "*"
      }
    ],
    "programFiles": [
      "net/batman-adv/mesh-interface.c"
    ],
    "defaultStatus": "affected"
  }
]
Related CVEs
CVE-2026-72232

Source reference: /cveMetadata/cveId

Publisher severity

high

Source reference: /containers/cna/metrics

Event
#32979 · Revision 1
Added to Heist Feed
Publisher date
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