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CVE-2026-43391 nsfs: tighten permission checks for handle opening

🗓️ 08 May 2026 14:21:36Reported by LinuxType 
cvelist
 cvelist
🔗 www.cve.org👁 38 Views

CVE-2026-43391 nsfs tightens handle opening checks to limit privileged namespace visibility.

Related
Affected
Refs
ReporterTitlePublishedViews
Family
AstraLinux
Astra Linux – Vulnerability in Linux 5.10
20 May 202605:53
astralinux
Chainguard
CVE-2026-43391 vulnerabilities
16 Jul 202602:17
cgr
CNNVD
Linux kernel 安全漏洞
8 May 202600:00
cnnvd
CVE
CVE-2026-43391
8 May 202614:21
cve
Debian CVE
CVE-2026-43391
8 May 202614:21
debiancve
EUVD
EUVD-2026-28697
8 May 202615:31
euvd
NVD
CVE-2026-43391
8 May 202615:16
nvd
OSV
BELL-CVE-2026-43391
21 May 202606:10
osv
OSV
CGA-XPHC-3G84-8VMW
15 Jul 202622:14
osv
OSV
CVE-2026-43391 nsfs: tighten permission checks for handle opening
8 May 202614:21
osv
Rows per page
[
  {
    "product": "Linux",
    "vendor": "Linux",
    "defaultStatus": "unaffected",
    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
    "programFiles": [
      "fs/nsfs.c"
    ],
    "versions": [
      {
        "version": "5222470b2fbb3740f931f189db33dd1367b1ae75",
        "lessThan": "1797ee11451f1b2be69863a9f5bd43b948813fdf",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "5222470b2fbb3740f931f189db33dd1367b1ae75",
        "lessThan": "d2324a9317f00013facb0ba00b00440e19d2af5e",
        "status": "affected",
        "versionType": "git"
      }
    ]
  },
  {
    "product": "Linux",
    "vendor": "Linux",
    "defaultStatus": "affected",
    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
    "programFiles": [
      "fs/nsfs.c"
    ],
    "versions": [
      {
        "version": "6.18",
        "status": "affected"
      },
      {
        "version": "0",
        "lessThan": "6.18",
        "status": "unaffected",
        "versionType": "semver"
      },
      {
        "version": "6.19.9",
        "lessThanOrEqual": "6.19.*",
        "status": "unaffected",
        "versionType": "semver"
      },
      {
        "version": "7.0",
        "lessThanOrEqual": "*",
        "status": "unaffected",
        "versionType": "original_commit_for_fix"
      }
    ]
  }
]

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11 May 2026 22:23Current
CVSS 3.18.8
EPSS0.00121
38