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CVE-2026-74663 net/sched: reject overly deep qdisc hierarchies

🗓️ 22 Aug 2026 15:32:35Reported by LinuxType 
cvelist
 cvelist
🔗 www.cve.org👁 12 Views

Deep qdisc hierarchies in Linux kernel cause excessive recursion and kernel stack exhaustion.

Related
Affected
Refs
ReporterTitlePublishedViews
Family
cve
CVE
CVE-2026-74663
22 Aug 202615:32
cve
debiancve
Debian CVE
CVE-2026-74663
22 Aug 202615:32
debiancve
euvd
EUVD
EUVD-2026-64350
22 Aug 202615:32
euvd
nvd
NVD
CVE-2026-74663
22 Aug 202616:16
nvd
osv
OSV
DEBIAN-CVE-2026-74663
22 Aug 202616:16
osv
ptsecurity
Positive Technologies
PT-2026-79668
22 Aug 202600:00
ptsecurity
susecve
SUSE CVE
SUSE CVE-2026-74663
23 Aug 202600:05
susecve
[
  {
    "product": "Linux",
    "vendor": "Linux",
    "defaultStatus": "unaffected",
    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
    "programFiles": [
      "include/net/sch_generic.h",
      "net/sched/sch_api.c"
    ],
    "versions": [
      {
        "version": "1da177e4c3f41524e886b7f1b8a0c1fc7321cac2",
        "lessThan": "9f69bb9fdaa2fe64b68bb62fb84d405784bee540",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "1da177e4c3f41524e886b7f1b8a0c1fc7321cac2",
        "lessThan": "8ca8cdb74939581339e1ae370193c0adb5a85336",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "1da177e4c3f41524e886b7f1b8a0c1fc7321cac2",
        "lessThan": "2759acf08a3454866660edcd3ef4e64139f254a6",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "1da177e4c3f41524e886b7f1b8a0c1fc7321cac2",
        "lessThan": "a4b14a4df29d36458a943f9b521ddd0f940363cc",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "1da177e4c3f41524e886b7f1b8a0c1fc7321cac2",
        "lessThan": "e2d658c6427844cee5bc654b436ca68d680b6148",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "1da177e4c3f41524e886b7f1b8a0c1fc7321cac2",
        "lessThan": "dedd34b0f2310e28c5f6d4875cfbf4b7ed821c01",
        "status": "affected",
        "versionType": "git"
      }
    ]
  },
  {
    "product": "Linux",
    "vendor": "Linux",
    "defaultStatus": "affected",
    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
    "programFiles": [
      "include/net/sch_generic.h",
      "net/sched/sch_api.c"
    ],
    "versions": [
      {
        "version": "2.6.12",
        "status": "affected"
      },
      {
        "version": "0",
        "lessThan": "2.6.12",
        "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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