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CVE-2026-64136 smb: client: protect tc_count increment in smb2_find_smb_sess_tcon_unlocked()

🗓️ 19 Jul 2026 15:40:30Reported by LinuxType 
cvelist
 cvelist
🔗 www.cve.org👁 27 Views

Linux kernel fix protects tc_count increment in smb2_find_smb_sess_tcon_unlocked to prevent race.

Related
Affected
Refs
ReporterTitlePublishedViews
Family
ATTACKERKB
CVE-2026-64136
19 Jul 202615:40
attackerkb
CVE
CVE-2026-64136
19 Jul 202615:40
cve
EUVD
EUVD-2026-45821
19 Jul 202615:40
euvd
NVD
CVE-2026-64136
19 Jul 202616:17
nvd
OSV
CVE-2026-64136 smb: client: protect tc_count increment in smb2_find_smb_sess_tcon_unlocked()
19 Jul 202615:40
osv
OSV
DEBIAN-CVE-2026-64136
19 Jul 202616:17
osv
OSV
UBUNTU-CVE-2026-64136
20 Jul 202600:00
osv
Positive Technologies
PT-2026-61453
19 Jul 202600:00
ptsecurity
RedhatCVE
CVE-2026-64136
20 Jul 202612:03
redhatcve
Tenable Nessus
Linux Distros Unpatched Vulnerability : CVE-2026-64136
20 Jul 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/smb2transport.c"
    ],
    "versions": [
      {
        "version": "953953abb66e52c224057ab91e404284fefeab62",
        "lessThan": "7df1df6f40c0720d30206aa35c0343b962350e0d",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "601dd3b79769b38d30b693c40afdb2a4b7edf9d0",
        "lessThan": "13fb413ae22a37c69341918a6d651d19a9b0b9b7",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "3969db6b22e3d90d8c5f22ac1a7fe0350a94c136",
        "lessThan": "bf4ebdb19ff9b3cdf992b50715fe61633327416a",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "96c4af418586ee9a6aab61738644366426e05316",
        "lessThan": "e374f4e496fef8168784f93a4477d67be34485fd",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "96c4af418586ee9a6aab61738644366426e05316",
        "lessThan": "4d8690dace005a38e6dbde9ecce2da3ad85c7c41",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "8c59eeeeffa1524ef57e173a89a1a3ff539888d5",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "6.6.128",
        "lessThan": "6.6.142",
        "status": "affected",
        "versionType": "semver"
      },
      {
        "version": "6.12.75",
        "lessThan": "6.12.92",
        "status": "affected",
        "versionType": "semver"
      },
      {
        "version": "6.18.16",
        "lessThan": "6.18.34",
        "status": "affected",
        "versionType": "semver"
      },
      {
        "version": "6.19.6",
        "lessThan": "6.20",
        "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/client/smb2transport.c"
    ],
    "versions": [
      {
        "version": "7.0",
        "status": "affected"
      },
      {
        "version": "0",
        "lessThan": "7.0",
        "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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20 Jul 2026 13:43Current
CVSS 3.19.8
EPSS0.00175
27