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CVE-2026-72502 tcp: ipv6: clamp default adverting MSS to avoid GSO_BY_FRAGS (0xFFFF)

🗓️ 15 Aug 2026 05:57:33Reported by LinuxType 
cvelist
 cvelist
🔗 www.cve.org👁 34 Views

Linux kernel TCP/IPv6 NULL pointer dereference via MSS clamped to GSO_BY_FRAGS magic value 0xFFFF.

Related
Affected
Refs
[
  {
    "product": "Linux",
    "vendor": "Linux",
    "defaultStatus": "unaffected",
    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
    "programFiles": [
      "net/ipv6/route.c"
    ],
    "versions": [
      {
        "version": "3953c46c3ac7eef31a9935427371c6f54a22f1ba",
        "lessThan": "560b33b434e922ef97f9ff23aa2e909ef7aacd5c",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "3953c46c3ac7eef31a9935427371c6f54a22f1ba",
        "lessThan": "21f69ac1879bb970588d5e7c12a96e6542f7c1a7",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "3953c46c3ac7eef31a9935427371c6f54a22f1ba",
        "lessThan": "c0db3dc2ac323b6c4b76adede3b355a9daa6dea8",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "3953c46c3ac7eef31a9935427371c6f54a22f1ba",
        "lessThan": "572fff10819dfc359298d1f774839e76a4d96f93",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "3953c46c3ac7eef31a9935427371c6f54a22f1ba",
        "lessThan": "8e6214a530c03e341dc1b0a846c8f2b716b3551a",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "3953c46c3ac7eef31a9935427371c6f54a22f1ba",
        "lessThan": "d774cdbda6634a78d0f2baf201ee5a8c57f3bc0e",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "3953c46c3ac7eef31a9935427371c6f54a22f1ba",
        "lessThan": "a210791f33345aa87187f7d7a9f3b9b7f4a28e6d",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "3953c46c3ac7eef31a9935427371c6f54a22f1ba",
        "lessThan": "2bf43d0e2e6a27d52a7d624e2d6b9116972e8a22",
        "status": "affected",
        "versionType": "git"
      }
    ]
  },
  {
    "product": "Linux",
    "vendor": "Linux",
    "defaultStatus": "affected",
    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
    "programFiles": [
      "net/ipv6/route.c"
    ],
    "versions": [
      {
        "version": "4.8",
        "status": "affected"
      },
      {
        "version": "0",
        "lessThan": "4.8",
        "status": "unaffected",
        "versionType": "semver"
      },
      {
        "version": "5.10.261",
        "lessThanOrEqual": "5.10.*",
        "status": "unaffected",
        "versionType": "semver"
      },
      {
        "version": "5.15.212",
        "lessThanOrEqual": "5.15.*",
        "status": "unaffected",
        "versionType": "semver"
      },
      {
        "version": "6.1.178",
        "lessThanOrEqual": "6.1.*",
        "status": "unaffected",
        "versionType": "semver"
      },
      {
        "version": "6.6.145",
        "lessThanOrEqual": "6.6.*",
        "status": "unaffected",
        "versionType": "semver"
      },
      {
        "version": "6.12.97",
        "lessThanOrEqual": "6.12.*",
        "status": "unaffected",
        "versionType": "semver"
      },
      {
        "version": "6.18.40",
        "lessThanOrEqual": "6.18.*",
        "status": "unaffected",
        "versionType": "semver"
      },
      {
        "version": "7.1.5",
        "lessThanOrEqual": "7.1.*",
        "status": "unaffected",
        "versionType": "semver"
      },
      {
        "version": "7.2",
        "lessThanOrEqual": "*",
        "status": "unaffected",
        "versionType": "original_commit_for_fix"
      }
    ]
  }
]

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17 Aug 2026 05:45Current
CVSS 3.17.5
EPSS0.00696
34