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CVE-2026-64434 Bluetooth: L2CAP: Fix UAF in channel timeout by holding conn ref

🗓️ 25 Jul 2026 08:51:09Reported by LinuxType 
cvelist
 cvelist🔗 www.cve.org👁 6 Views

In the Linux kernel, the following vulnerability has been resolved: Bluetooth: L2CAP: Fix UAF in channel timeout by holding conn ref l2cap_chan_timeout() runs asynchronously and accesses chan->conn. Ifthe connection is torn down while the timer...

Related
Affected
Refs
ReporterTitlePublishedViews
Family
ATTACKERKB		CVE-2026-64434
25 Jul 202608:51
–attackerkb
CVE		CVE-2026-64434
25 Jul 202608:51
–cve
Debian CVE		CVE-2026-64434
25 Jul 202608:51
–debiancve
EUVD		EUVD-2026-48778
25 Jul 202608:51
–euvd
NVD		CVE-2026-64434
25 Jul 202610:17
–nvd
OSV		DEBIAN-CVE-2026-64434
25 Jul 202616:48
–osv
Positive Technologies		PT-2026-64655
25 Jul 202600:00
–ptsecurity
SUSE CVE		SUSE CVE-2026-64434
25 Jul 202615:59
–susecve
Tenable Nessus		Linux Distros Unpatched Vulnerability : CVE-2026-64434
25 Jul 202600:00
–nessus
[
  {
    "product": "Linux",
    "vendor": "Linux",
    "defaultStatus": "unaffected",
    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
    "programFiles": [
      "include/net/bluetooth/l2cap.h",
      "net/bluetooth/l2cap_core.c"
    ],
    "versions": [
      {
        "version": "89dec92041717b027216e110599e4f6d6c921b79",
        "lessThan": "91047a4396a8b1857a6f712a90cf33ec0012b189",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "50dfec218808b148ab4247b1858031b7a32015c5",
        "lessThan": "0b0e2bf39cf99e458d991b9df253727e036a7d7d",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "859d3ace791ed878ae9ba5522c7844d960da8f88",
        "lessThan": "d3b739db5dc6f688a60d56da872fabaf65246032",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "8c8e620467a7b51562dbcefbd1f09f288d7d710d",
        "lessThan": "50c38d9f42a529691e4e67ea9cedf4f0bfc8d277",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "8c8e620467a7b51562dbcefbd1f09f288d7d710d",
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        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "3634cbdc2eb414b69ffa752ddbe5e0458518e321",
        "status": "affected",
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      },
      {
        "version": "e1c100e2d61bd8c718b7d91fe3e050780a9bf72d",
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        "versionType": "git"
      },
      {
        "version": "deb8493a8fa599f6c95e2465b12bfdfb7f94a1d9",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "7555fd885a0603f50e49a655850a1f2bd8a25398",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "6.6.143",
        "lessThan": "6.6.145",
        "status": "affected",
        "versionType": "semver"
      },
      {
        "version": "6.12.93",
        "lessThan": "6.12.97",
        "status": "affected",
        "versionType": "semver"
      },
      {
        "version": "6.18.35",
        "lessThan": "6.18.39",
        "status": "affected",
        "versionType": "semver"
      },
      {
        "version": "5.10.259",
        "lessThan": "5.11",
        "status": "affected",
        "versionType": "semver"
      },
      {
        "version": "5.15.210",
        "lessThan": "5.16",
        "status": "affected",
        "versionType": "semver"
      },
      {
        "version": "6.1.176",
        "lessThan": "6.2",
        "status": "affected",
        "versionType": "semver"
      },
      {
        "version": "7.0.12",
        "lessThan": "7.1",
        "status": "affected",
        "versionType": "semver"
      }
    ]
  },
  {
    "product": "Linux",
    "vendor": "Linux",
    "defaultStatus": "affected",
    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
    "programFiles": [
      "include/net/bluetooth/l2cap.h",
      "net/bluetooth/l2cap_core.c"
    ],
    "versions": [
      {
        "version": "7.1",
        "status": "affected"
      },
      {
        "version": "0",
        "lessThan": "7.1",
        "status": "unaffected",
        "versionType": "semver"
      },
      {
        "version": "6.6.145",
        "lessThanOrEqual": "6.6.*",
        "status": "unaffected",
        "versionType": "semver"
      },
      {
        "version": "6.12.97",
        "lessThanOrEqual": "6.12.*",
        "status": "unaffected",
        "versionType": "semver"
      },
      {
        "version": "6.18.39",
        "lessThanOrEqual": "6.18.*",
        "status": "unaffected",
        "versionType": "semver"
      },
      {
        "version": "7.1.4",
        "lessThanOrEqual": "7.1.*",
        "status": "unaffected",
        "versionType": "semver"
      },
      {
        "version": "7.2-rc1",
        "lessThanOrEqual": "*",
        "status": "unaffected",
        "versionType": "original_commit_for_fix"
      }
    ]
  }
]

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25 Jul 2026 08:51Current
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