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CVE-2026-98983

🗓️ 23 Oct 2026 12:20:00Reported by LinuxType 
cve
 cve
🔗 web.nvd.nist.gov👁 1 Views

Linux kernel ksys_unshare() fails to drop active namespace references, causing a warning.

Related
Detection
Affected
Refs
ReporterTitlePublishedViews
Family
cvelist
Cvelist
CVE-2026-98983 unshare: don't drop active namespace references that were never taken
23 Oct 202612:20
–cvelist
euvd
EUVD
EUVD-2026-108777
23 Oct 202612:20
–euvd
nvd
NVD
CVE-2026-98983
23 Oct 202613:17
–nvd
Vulners
CNA
Node
OR
OR
linuxlinux_kernelRange5.15.209–5.16
linuxlinux_kernelRange6.1.175–6.2
linuxlinux_kernelRange6.6.141–6.7
linuxlinux_kernelRange6.12.91–6.13
linuxlinux_kernelRange6.18.33–6.19
linuxlinux_kernelRange7.0.10–7.1
OR
linuxlinux_kernelRange7.1–7.2.11
linuxlinux_kernelRange7.3.0≥
[
  {
    "product": "Linux",
    "vendor": "Linux",
    "defaultStatus": "unaffected",
    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
    "programFiles": [
      "include/linux/nsproxy.h",
      "kernel/fork.c",
      "kernel/nsproxy.c"
    ],
    "versions": [
      {
        "version": "a98621a0f187a934c115dcfe79a49520ae892111",
        "lessThan": "56fe03a0c05dba4c5f6a23c391f96de1614a098c",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "a98621a0f187a934c115dcfe79a49520ae892111",
        "lessThan": "0b6f31a3c0b16066f812e94b52a704174a6f23cd",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "27ae6b17c9ba7ff353ab0906297f08aa845782b4",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "297261b343371c4f0b31055d53d285138ec21565",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "813a47b0309097da71781ee4ac11922e39b67d55",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "6e608e3e5ce12ce7fd21e46212eccca37f917d0e",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "a261fccdb4ac58ec5ba6aa1d92a6cc418fff301f",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "665dc1ed16357988d439fc5bbc860ee36f540d81",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "5.15.209",
        "lessThan": "5.16",
        "status": "affected",
        "versionType": "semver"
      },
      {
        "version": "6.1.175",
        "lessThan": "6.2",
        "status": "affected",
        "versionType": "semver"
      },
      {
        "version": "6.6.141",
        "lessThan": "6.7",
        "status": "affected",
        "versionType": "semver"
      },
      {
        "version": "6.12.91",
        "lessThan": "6.13",
        "status": "affected",
        "versionType": "semver"
      },
      {
        "version": "6.18.33",
        "lessThan": "6.19",
        "status": "affected",
        "versionType": "semver"
      },
      {
        "version": "7.0.10",
        "lessThan": "7.1",
        "status": "affected",
        "versionType": "semver"
      }
    ]
  },
  {
    "product": "Linux",
    "vendor": "Linux",
    "defaultStatus": "affected",
    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
    "programFiles": [
      "include/linux/nsproxy.h",
      "kernel/fork.c",
      "kernel/nsproxy.c"
    ],
    "versions": [
      {
        "version": "7.1",
        "status": "affected"
      },
      {
        "version": "0",
        "lessThan": "7.1",
        "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