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CVE-2026-98021 net: reject oversized tx_queue_len at netlink parse time

🗓️ 25 Sep 2026 10:23:41Reported by LinuxType 
cvelist
 cvelist
🔗 www.cve.org👁 38 Views

Linux kernel netlink parse allows oversized tx_queue_len, causing oversized ring allocations.

Related
Affected
Refs
[
  {
    "product": "Linux",
    "vendor": "Linux",
    "defaultStatus": "unaffected",
    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
    "programFiles": [
      "Documentation/netlink/specs/rt-link.yaml",
      "net/core/rtnetlink.c"
    ],
    "versions": [
      {
        "version": "38f7b870d4a6a5d3ec21557e849620cb7d032965",
        "lessThan": "45ca9f59b6c7ea70e0a17054902b8a556913db34",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "38f7b870d4a6a5d3ec21557e849620cb7d032965",
        "lessThan": "2fd0880f0272ec022906a05587fd91416ebecc38",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "38f7b870d4a6a5d3ec21557e849620cb7d032965",
        "lessThan": "a638a2625aa83160a394abe8e8b2e524a80c771b",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "38f7b870d4a6a5d3ec21557e849620cb7d032965",
        "lessThan": "1aa9e143bf51405665a793d4cc925e1c4f0c5922",
        "status": "affected",
        "versionType": "git"
      }
    ]
  },
  {
    "product": "Linux",
    "vendor": "Linux",
    "defaultStatus": "affected",
    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
    "programFiles": [
      "Documentation/netlink/specs/rt-link.yaml",
      "net/core/rtnetlink.c"
    ],
    "versions": [
      {
        "version": "2.6.23",
        "status": "affected"
      },
      {
        "version": "0",
        "lessThan": "2.6.23",
        "status": "unaffected",
        "versionType": "semver"
      },
      {
        "version": "6.12.111",
        "lessThanOrEqual": "6.12.*",
        "status": "unaffected",
        "versionType": "semver"
      },
      {
        "version": "6.18.53",
        "lessThanOrEqual": "6.18.*",
        "status": "unaffected",
        "versionType": "semver"
      },
      {
        "version": "7.2.7",
        "lessThanOrEqual": "7.2.*",
        "status": "unaffected",
        "versionType": "semver"
      },
      {
        "version": "7.3-rc3",
        "lessThanOrEqual": "*",
        "status": "unaffected",
        "versionType": "original_commit_for_fix"
      }
    ]
  }
]

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