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CVE-2026-98990

🗓️ 23 Oct 2026 12:20:09Reported by LinuxType 
cve
 cve
🔗 web.nvd.nist.gov👁 1 Views

Linux kernel namespace issue allows unmounting a busy mount with users.

Related
Detection
Affected
Refs
ReporterTitlePublishedViews
Family
circl
Circl
CVE-2026-98990
23 Oct 202613:33
–circl
cvelist
Cvelist
CVE-2026-98990 namespace: check a submount for references right before unmounting it
23 Oct 202612:20
–cvelist
debiancve
Debian CVE
CVE-2026-98990
23 Oct 202612:20
–debiancve
euvd
EUVD
EUVD-2026-108784
23 Oct 202612:20
–euvd
nvd
NVD
CVE-2026-98990
23 Oct 202613:17
–nvd
osv_debian
osv_debian
DEBIAN-CVE-2026-98990
23 Oct 202613:17
–osv_debian
ptsecurity
Positive Technologies
PT-2026-121967
23 Oct 202600:00
–ptsecurity
Vulners
CNA
Node
OR
OR
linuxlinux_kernelRange4.1.40–4.2
linuxlinux_kernelRange4.4.54–4.5
linuxlinux_kernelRange4.9.15–4.10
linuxlinux_kernelRange4.10.3–4.11
OR
linuxlinux_kernelRange4.11–6.6.160
linuxlinux_kernelRange6.7.0–6.12.113
linuxlinux_kernelRange6.13.0–6.18.57
linuxlinux_kernelRange6.19.0–7.2.11
linuxlinux_kernelRange7.3.0≥
[
  {
    "product": "Linux",
    "vendor": "Linux",
    "defaultStatus": "unaffected",
    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
    "programFiles": [
      "fs/namespace.c"
    ],
    "versions": [
      {
        "version": "1064f874abc0d05eeed8993815f584d847b72486",
        "lessThan": "f6394281834492c6516a405a348b545ae698a331",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "1064f874abc0d05eeed8993815f584d847b72486",
        "lessThan": "6e4012e571867868b545c91ca9d6095fdb709907",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "1064f874abc0d05eeed8993815f584d847b72486",
        "lessThan": "d73f04e92c1aab78d96ac6cadb234c8a3a373d22",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "1064f874abc0d05eeed8993815f584d847b72486",
        "lessThan": "18902a23ef36f83d32bafc58ae2484e6bb4bb8ef",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "1064f874abc0d05eeed8993815f584d847b72486",
        "lessThan": "32bf92416614a1e3ff3524fc6b780259c7aad3ef",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "5e6ef5ef6eaf690faad3a7c6c665ebf45d7b6ccf",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "839d42687dfce0ed0ea2c6bd8d707cc0e276fbe7",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "808e83e5add13152bd4a88346487de68395c136b",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "6de9d08a9718ee9c12ba6343c50141c2d633e3dc",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "4.1.40",
        "lessThan": "4.2",
        "status": "affected",
        "versionType": "semver"
      },
      {
        "version": "4.4.54",
        "lessThan": "4.5",
        "status": "affected",
        "versionType": "semver"
      },
      {
        "version": "4.9.15",
        "lessThan": "4.10",
        "status": "affected",
        "versionType": "semver"
      },
      {
        "version": "4.10.3",
        "lessThan": "4.11",
        "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/namespace.c"
    ],
    "versions": [
      {
        "version": "4.11",
        "status": "affected"
      },
      {
        "version": "0",
        "lessThan": "4.11",
        "status": "unaffected",
        "versionType": "semver"
      },
      {
        "version": "6.6.160",
        "lessThanOrEqual": "6.6.*",
        "status": "unaffected",
        "versionType": "semver"
      },
      {
        "version": "6.12.113",
        "lessThanOrEqual": "6.12.*",
        "status": "unaffected",
        "versionType": "semver"
      },
      {
        "version": "6.18.57",
        "lessThanOrEqual": "6.18.*",
        "status": "unaffected",
        "versionType": "semver"
      },
      {
        "version": "7.2.11",
        "lessThanOrEqual": "7.2.*",
        "status": "unaffected",
        "versionType": "semver"
      },
      {
        "version": "7.3",
        "lessThanOrEqual": "*",
        "status": "unaffected",
        "versionType": "original_commit_for_fix"
      }
    ]
  }
]

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23 Oct 2026 13:17Current
5.9Medium risk
Vulners AI Score5.9
1