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CVE-2026-89604 efivarfs: Rate limit statfs() handler

🗓️ 11 Sep 2026 19:45:07Reported by LinuxType 
cvelist
 cvelist
🔗 www.cve.org👁 16 Views

Unprivileged DoS via statfs() flood on efivarfs causing costly SMM calls in Linux kernel.

Related
Affected
Refs
ReporterTitlePublishedViews
Family
cve
CVE
CVE-2026-89604
11 Sep 202619:45
cve
debiancve
Debian CVE
CVE-2026-89604
11 Sep 202619:45
debiancve
euvd
EUVD
EUVD-2026-76516
11 Sep 202619:45
euvd
nvd
NVD
CVE-2026-89604
11 Sep 202620:19
nvd
osv
OSV
AZL-100856 CVE-2026-89604 affecting package kernel 6.6.150.1-1
11 Sep 202620:19
osv
osv
OSV
DEBIAN-CVE-2026-89604
11 Sep 202620:19
osv
ptsecurity
Positive Technologies
PT-2026-90320
11 Sep 202600:00
ptsecurity
redhatcve
RedhatCVE
CVE-2026-89604
11 Sep 202622:51
redhatcve
[
  {
    "product": "Linux",
    "vendor": "Linux",
    "defaultStatus": "unaffected",
    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
    "programFiles": [
      "fs/efivarfs/super.c"
    ],
    "versions": [
      {
        "version": "d86ff3333cb1d5f42d8898fb5fdb304e143c0237",
        "lessThan": "8953bdd1b9c0e748d5408d3d0b8e7aeee5c9cd41",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "d86ff3333cb1d5f42d8898fb5fdb304e143c0237",
        "lessThan": "92895a14329cc9533e2a74a265214f690ba3851a",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "d86ff3333cb1d5f42d8898fb5fdb304e143c0237",
        "lessThan": "0dbc2e94b81df5a1264068b6ed3605c654b8afcb",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "d86ff3333cb1d5f42d8898fb5fdb304e143c0237",
        "lessThan": "b2326338dc683e8c1067c0cbf7a47986c4190902",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "115409cbb6a296d73702a62c54c5b1b11cb88b3d",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "6.1.178",
        "lessThan": "6.2",
        "status": "affected",
        "versionType": "semver"
      }
    ]
  },
  {
    "product": "Linux",
    "vendor": "Linux",
    "defaultStatus": "affected",
    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
    "programFiles": [
      "fs/efivarfs/super.c"
    ],
    "versions": [
      {
        "version": "6.5",
        "status": "affected"
      },
      {
        "version": "0",
        "lessThan": "6.5",
        "status": "unaffected",
        "versionType": "semver"
      },
      {
        "version": "6.12.109",
        "lessThanOrEqual": "6.12.*",
        "status": "unaffected",
        "versionType": "semver"
      },
      {
        "version": "6.18.50",
        "lessThanOrEqual": "6.18.*",
        "status": "unaffected",
        "versionType": "semver"
      },
      {
        "version": "7.2.4",
        "lessThanOrEqual": "7.2.*",
        "status": "unaffected",
        "versionType": "semver"
      },
      {
        "version": "7.3-rc1",
        "lessThanOrEqual": "*",
        "status": "unaffected",
        "versionType": "original_commit_for_fix"
      }
    ]
  }
]

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