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CVE-2026-31717

🗓️ 01 May 2026 13:56:12Reported by LinuxType 
cve
 cve
🔗 web.nvd.nist.gov👁 27 Views🌐 WEB

CVE-2026-31717: ksmbd validates reconnecting user against original durable handle owner.

Related
Detection
Affected
Refs
Paths
ReporterTitlePublishedViews
Family
ATTACKERKB
CVE-2026-31717
1 May 202613:56
attackerkb
AstraLinux
Astra Linux – Vulnerability in Linux 5.10
19 Jun 202611:10
astralinux
Chainguard
CVE-2026-31717 vulnerabilities
8 May 202607:18
cgr
Circl
CVE-2026-31717
4 May 202623:00
circl
CNNVD
Linux kernel 安全漏洞
1 May 202600:00
cnnvd
Cvelist
CVE-2026-31717 ksmbd: validate owner of durable handle on reconnect
1 May 202613:56
cvelist
GithubExploit
Exploit for CVE-2026-31717
4 May 202622:03
githubexploit
Debian
[SECURITY] [DSA 6355-1] linux security update
21 Jun 202608:15
debian
Debian CVE
CVE-2026-31717
1 May 202613:56
debiancve
Tenable Nessus
Debian dsa-6355 : ata-modules-6.12.90+deb13-armmp-di - security update
21 Jun 202600:00
nessus
Rows per page
NVD
Vulners
CNA
Node
linuxlinux_kernelRange6.6.326.7
OR
linuxlinux_kernelRange6.96.18.25
OR
linuxlinux_kernelRange6.197.0.2
OR
[
  {
    "product": "Linux",
    "vendor": "Linux",
    "defaultStatus": "unaffected",
    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
    "programFiles": [
      "fs/smb/server/mgmt/user_session.c",
      "fs/smb/server/oplock.c",
      "fs/smb/server/oplock.h",
      "fs/smb/server/smb2pdu.c",
      "fs/smb/server/vfs_cache.c",
      "fs/smb/server/vfs_cache.h"
    ],
    "versions": [
      {
        "version": "8df4bcdb0a4232192b2445256c39b787d58ef14d",
        "lessThan": "712cdf917e77a6444ce3836874829d770db20ee6",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "c8efcc786146a951091588e5fa7e3c754850cb3c",
        "lessThan": "c7f0f0d01c88bdcb8b1694d7d321670013f7ed7d",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "c8efcc786146a951091588e5fa7e3c754850cb3c",
        "lessThan": "00ce8d6789dae72d042a4522264964c72891ca37",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "c8efcc786146a951091588e5fa7e3c754850cb3c",
        "lessThan": "c908c853f304a4969b5aa10eba0b50350cc65b80",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "c8efcc786146a951091588e5fa7e3c754850cb3c",
        "lessThan": "49110a8ce654bbe56bef7c5e44cce31f4b102b8a",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "6.6.32",
        "lessThan": "6.6.142",
        "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/smb/server/mgmt/user_session.c",
      "fs/smb/server/oplock.c",
      "fs/smb/server/oplock.h",
      "fs/smb/server/smb2pdu.c",
      "fs/smb/server/vfs_cache.c",
      "fs/smb/server/vfs_cache.h"
    ],
    "versions": [
      {
        "version": "6.9",
        "status": "affected"
      },
      {
        "version": "0",
        "lessThan": "6.9",
        "status": "unaffected",
        "versionType": "semver"
      },
      {
        "version": "6.6.142",
        "lessThanOrEqual": "6.6.*",
        "status": "unaffected",
        "versionType": "semver"
      },
      {
        "version": "6.12.92",
        "lessThanOrEqual": "6.12.*",
        "status": "unaffected",
        "versionType": "semver"
      },
      {
        "version": "6.18.25",
        "lessThanOrEqual": "6.18.*",
        "status": "unaffected",
        "versionType": "semver"
      },
      {
        "version": "7.0.2",
        "lessThanOrEqual": "7.0.*",
        "status": "unaffected",
        "versionType": "semver"
      },
      {
        "version": "7.1",
        "lessThanOrEqual": "*",
        "status": "unaffected",
        "versionType": "original_commit_for_fix"
      }
    ]
  }
]
ParameterPositionPathDescriptionCWE
persistent_idpathfs/smb/server/oplock.cVulnerability in non-lease branch of smb2_check_durable_oplock where authorization is skipped, allowing an attacker to hijack an orphaned durable handle by reconnecting with a user-supplied persistent_id.CWE-863

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17 Jun 2026 10:34Current
5.8Medium risk
Vulners AI Score5.8
CVSS 3.18.8
EPSS0.00437
27