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CVE-2026-64388

🗓️ 25 Jul 2026 08:50:36Reported by LinuxType 
cve
 cve
🔗 web.nvd.nist.gov👁 64 Views

Linux kernel fix: chown and chgrp with POSIX extensions now map ownership on the server.

Related
Detection
Affected
Refs
ReporterTitlePublishedViews
Family
attackerkb
attackerkb
CVE-2026-64388
25 Jul 202608:50
–attackerkb
cgr
Chainguard
CVE-2026-64388 vulnerabilities
10 Sep 202608:54
–cgr
circl
Circl
CVE-2026-64388
15 Sep 202612:46
–circl
cnnvd
CNNVD
Linux Kernel Security Vulnerabilities
24 Jul 202616:00
–cnnvd
cvelist
Cvelist
CVE-2026-64388 smb/client: fix chown/chgrp with SMB3 POSIX Extensions
25 Jul 202608:50
–cvelist
debian
Debian
[SECURITY] [DSA 6602-1] linux security update
2 Nov 202616:13
–debian
debiancve
Debian CVE
CVE-2026-64388
25 Jul 202608:50
–debiancve
nessus
Tenable Nessus
EulerOS 2.0 SP13 : kernel (EulerOS-SA-2026-4057)
12 Oct 202600:00
–nessus
nessus
Tenable Nessus
EulerOS 2.0 SP13 : kernel (EulerOS-SA-2026-4148)
12 Oct 202600:00
–nessus
nessus
Tenable Nessus
EulerOS 2.0 SP11 : kernel (EulerOS-SA-2026-4241)
12 Oct 202600:00
–nessus
Rows per page
NVD
Vulners
CNA
Node
linuxlinux_kernelRange4.18–7.1.4
[
  {
    "product": "Linux",
    "vendor": "Linux",
    "defaultStatus": "unaffected",
    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
    "programFiles": [
      "fs/smb/client/inode.c"
    ],
    "versions": [
      {
        "version": "b326614ea2159ea5c835d320f261d05d080cd201",
        "lessThan": "c0fe1118a1471d459f76c3e70ff2abbf784ce6bf",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "b326614ea2159ea5c835d320f261d05d080cd201",
        "lessThan": "6825a45f6b8ef76b0ee32649ec3d6e39ca143a18",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "b326614ea2159ea5c835d320f261d05d080cd201",
        "lessThan": "27ead8c5418af6bfab711079fecb9414d78d4cae",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "b326614ea2159ea5c835d320f261d05d080cd201",
        "lessThan": "3eaec47518e126e6dcd1a48521d740278073f0ec",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "b326614ea2159ea5c835d320f261d05d080cd201",
        "lessThan": "550cfb8a81181331d4d0f76ab75ee58a0bf41e3e",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "b326614ea2159ea5c835d320f261d05d080cd201",
        "lessThan": "760ef2c579c2609cf17fb1cd5392f64d42d43d33",
        "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/smb/client/inode.c"
    ],
    "versions": [
      {
        "version": "4.18",
        "status": "affected"
      },
      {
        "version": "0",
        "lessThan": "4.18",
        "status": "unaffected",
        "versionType": "semver"
      },
      {
        "version": "6.1.191",
        "lessThanOrEqual": "6.1.*",
        "status": "unaffected",
        "versionType": "semver"
      },
      {
        "version": "6.6.160",
        "lessThanOrEqual": "6.6.*",
        "status": "unaffected",
        "versionType": "semver"
      },
      {
        "version": "6.12.114",
        "lessThanOrEqual": "6.12.*",
        "status": "unaffected",
        "versionType": "semver"
      },
      {
        "version": "6.18.57",
        "lessThanOrEqual": "6.18.*",
        "status": "unaffected",
        "versionType": "semver"
      },
      {
        "version": "7.1.4",
        "lessThanOrEqual": "7.1.*",
        "status": "unaffected",
        "versionType": "semver"
      },
      {
        "version": "7.2",
        "lessThanOrEqual": "*",
        "status": "unaffected",
        "versionType": "original_commit_for_fix"
      }
    ]
  }
]

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30 Oct 2026 13:19Current
5.9Medium risk
Vulners AI Score5.9
CVSS 3.17.8
EPSS0.00134
SSVC
64