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CVE-2026-74704 net/sched: sch_cake: drop WARN_ON(1) for malformed packets in ACK filter

🗓️ 22 Aug 2026 15:33:03Reported by LinuxType 
cvelist
 cvelist
🔗 www.cve.org👁 4 Views

Linux kernel sch_cake ACK filter WARN_ON(1) on malformed IP header enables DoS via panic.

Related
Affected
Refs
ReporterTitlePublishedViews
Family
cve
CVE
CVE-2026-74704
22 Aug 202615:33
cve
euvd
EUVD
EUVD-2026-64391
22 Aug 202618:30
euvd
nvd
NVD
CVE-2026-74704
22 Aug 202616:16
nvd
ptsecurity
Positive Technologies
PT-2026-79709
22 Aug 202600:00
ptsecurity
[
  {
    "product": "Linux",
    "vendor": "Linux",
    "defaultStatus": "unaffected",
    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
    "programFiles": [
      "net/sched/sch_cake.c"
    ],
    "versions": [
      {
        "version": "8b7138814f29933898ecd31dfc83e35a30ee69f5",
        "lessThan": "c1693b7844a6c06d31a565e5a494948034dfd235",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "8b7138814f29933898ecd31dfc83e35a30ee69f5",
        "lessThan": "a4b52612004a5639c4bfc30ba93ba414b8326e2a",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "8b7138814f29933898ecd31dfc83e35a30ee69f5",
        "lessThan": "ae1b2f8e21a41e7c7e75511bea0c4ccc59ec1bd3",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "8b7138814f29933898ecd31dfc83e35a30ee69f5",
        "lessThan": "0c4882bff34558d8d53fb04c3e96da5c327c7dc8",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "8b7138814f29933898ecd31dfc83e35a30ee69f5",
        "lessThan": "2504a76e5c0694e14e15562730e1339f2d9f9458",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "8b7138814f29933898ecd31dfc83e35a30ee69f5",
        "lessThan": "cd2f1d9fe8a507c2dc86ad326fe221f121c47734",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "8b7138814f29933898ecd31dfc83e35a30ee69f5",
        "lessThan": "a1ae353d8355407c1bea971d1c1af5e7f242bb7d",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "8b7138814f29933898ecd31dfc83e35a30ee69f5",
        "lessThan": "2a33516f9ef59ad11844d4fc152f889449b5daf3",
        "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/sched/sch_cake.c"
    ],
    "versions": [
      {
        "version": "4.19",
        "status": "affected"
      },
      {
        "version": "0",
        "lessThan": "4.19",
        "status": "unaffected",
        "versionType": "semver"
      },
      {
        "version": "5.10.265",
        "lessThanOrEqual": "5.10.*",
        "status": "unaffected",
        "versionType": "semver"
      },
      {
        "version": "5.15.216",
        "lessThanOrEqual": "5.15.*",
        "status": "unaffected",
        "versionType": "semver"
      },
      {
        "version": "6.1.183",
        "lessThanOrEqual": "6.1.*",
        "status": "unaffected",
        "versionType": "semver"
      },
      {
        "version": "6.6.152",
        "lessThanOrEqual": "6.6.*",
        "status": "unaffected",
        "versionType": "semver"
      },
      {
        "version": "6.12.104",
        "lessThanOrEqual": "6.12.*",
        "status": "unaffected",
        "versionType": "semver"
      },
      {
        "version": "6.18.45",
        "lessThanOrEqual": "6.18.*",
        "status": "unaffected",
        "versionType": "semver"
      },
      {
        "version": "7.1.9",
        "lessThanOrEqual": "7.1.*",
        "status": "unaffected",
        "versionType": "semver"
      },
      {
        "version": "7.2",
        "lessThanOrEqual": "*",
        "status": "unaffected",
        "versionType": "original_commit_for_fix"
      }
    ]
  }
]

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