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CVE-2026-46243 smb: client: reject userspace cifs.spnego descriptions

🗓️ 01 Jun 2026 16:22:29Reported by LinuxType 
cvelist
 cvelist🔗 www.cve.org👁 36 Views

CVE-2026-46243 fixes SMB client by rejecting userspace cifs.spnego descriptions unless private spnego_cred is used.

Related
Affected
Refs
ReporterTitlePublishedViews
Family
GithubExploit		Exploit for CVE-2026-46243
3 Jun 202600:15
–githubexploit
GithubExploit		CIFSwitch
28 May 202605:38
–githubexploit
GithubExploit		Exploit for CVE-2026-46243
2 Jun 202611:39
–githubexploit
GithubExploit		Exploit for CVE-2026-46243
2 Jun 202611:39
–githubexploit
ATTACKERKB		CVE-2026-46243
1 Jun 202616:22
–attackerkb
Tenable Nessus		Amazon Linux 2023 : bpftool6.12, kernel6.12, kernel6.12-devel (ALAS2023-2026-1863)
22 Jun 202600:00
–nessus
Tenable Nessus		Amazon Linux 2023 : bpftool6.18, kernel6.18, kernel6.18-devel (ALAS2023-2026-1864)
22 Jun 202600:00
–nessus
Tenable Nessus		Amazon Linux 2023 : bpftool, kernel, kernel-devel (ALAS2023-2026-1865)
22 Jun 202600:00
–nessus
Tenable Nessus		Amazon Linux 2 : kernel, --advisory ALAS2-2026-3374 (ALAS-2026-3374)
22 Jun 202600:00
–nessus
Tenable Nessus		Amazon Linux 2 : kernel, --advisory ALAS2KERNEL-5.10-2026-122 (ALASKERNEL-5.10-2026-122)
22 Jun 202600:00
–nessus
Rows per page
[
  {
    "product": "Linux",
    "vendor": "Linux",
    "defaultStatus": "unaffected",
    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
    "programFiles": [
      "fs/smb/client/cifs_spnego.c"
    ],
    "versions": [
      {
        "version": "f1d662a7d5e5322e583aad6b3cfec03d8f27b435",
        "lessThan": "7713bd320ed4fc3d08a227cd8e41242219a16981",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "f1d662a7d5e5322e583aad6b3cfec03d8f27b435",
        "lessThan": "9544559e59438a4b609b2fdfa0763d8360572824",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "f1d662a7d5e5322e583aad6b3cfec03d8f27b435",
        "lessThan": "cf20038657d6d4974349556a34e08fe0490bebbc",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "f1d662a7d5e5322e583aad6b3cfec03d8f27b435",
        "lessThan": "2035acfb17221729b1b8ac335e941868a04ca079",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "f1d662a7d5e5322e583aad6b3cfec03d8f27b435",
        "lessThan": "a3bbda6502a9398b816fa2e71c9a3f955f58013d",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "f1d662a7d5e5322e583aad6b3cfec03d8f27b435",
        "lessThan": "91f89c1d83e80417629791fcef6af8140d7d01c8",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "f1d662a7d5e5322e583aad6b3cfec03d8f27b435",
        "lessThan": "0aece6685fc80a8de492688ca2315fb86ec379c7",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "f1d662a7d5e5322e583aad6b3cfec03d8f27b435",
        "lessThan": "3da1fdf4efbc490041eb4f836bf596201203f8f2",
        "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/cifs_spnego.c"
    ],
    "versions": [
      {
        "version": "2.6.24",
        "status": "affected"
      },
      {
        "version": "0",
        "lessThan": "2.6.24",
        "status": "unaffected",
        "versionType": "semver"
      },
      {
        "version": "5.10.258",
        "lessThanOrEqual": "5.10.*",
        "status": "unaffected",
        "versionType": "semver"
      },
      {
        "version": "5.15.209",
        "lessThanOrEqual": "5.15.*",
        "status": "unaffected",
        "versionType": "semver"
      },
      {
        "version": "6.1.175",
        "lessThanOrEqual": "6.1.*",
        "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": "6.18.34",
        "lessThanOrEqual": "6.18.*",
        "status": "unaffected",
        "versionType": "semver"
      },
      {
        "version": "7.0.11",
        "lessThanOrEqual": "7.0.*",
        "status": "unaffected",
        "versionType": "semver"
      },
      {
        "version": "7.1",
        "lessThanOrEqual": "*",
        "status": "unaffected",
        "versionType": "original_commit_for_fix"
      }
    ]
  }
]

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14 Jun 2026 18:05Current
CVSS 3.17.1
EPSS0.0031
linux kernelsmb clientcifs spnegouserspace keysprivate spnego credential
36