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CVE-2026-99239 Bluetooth: L2CAP: refuse __l2cap_chan_add if chan already has conn

🗓️ 02 Nov 2026 16:06:43Reported by LinuxType 
cvelist
 cvelist
🔗 www.cve.org👁 6 Views

TOCTOU race in Linux kernel Bluetooth L2CAP allows multiple __l2cap_chan_add calls.

Related
Affected
Refs
ReporterTitlePublishedViews
Family
cve
CVE
CVE-2026-99239
2 Nov 202616:06
–cve
debiancve
Debian CVE
CVE-2026-99239
3 Nov 202600:38
–debiancve
euvd
EUVD
EUVD-2026-115281
2 Nov 202616:06
–euvd
nvd
NVD
CVE-2026-99239
2 Nov 202616:17
–nvd
osv_debian
osv_debian
DEBIAN-CVE-2026-99239
2 Nov 202616:17
–osv_debian
rapid7
Rapid7 Vulnerability Database (full)
CVE-2026-99239: Linux: In the Linux kernel, the following vulnerability has been resolved: Bluetooth: L2CAP: refuse __l2cap_chan_add if chan…
2 Nov 202600:00
–rapid7
redhatcve
RedhatCVE
CVE-2026-99239
2 Nov 202620:33
–redhatcve
[
  {
    "product": "Linux",
    "vendor": "Linux",
    "defaultStatus": "unaffected",
    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
    "programFiles": [
      "net/bluetooth/l2cap_core.c",
      "net/bluetooth/l2cap_sock.c"
    ],
    "versions": [
      {
        "version": "8f90405a4a6f1f1880dc07996b47bf57c712bd8a",
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        "status": "affected",
        "versionType": "git"
      },
      {
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        "lessThan": "820579652b24ce277e0097cd65b42bd9b7b8bf07",
        "status": "affected",
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      },
      {
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      },
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      },
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        "status": "affected",
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      },
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      },
      {
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      },
      {
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      },
      {
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        "status": "affected",
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      },
      {
        "version": "6.1.183",
        "lessThan": "6.1.191",
        "status": "affected",
        "versionType": "semver"
      },
      {
        "version": "6.6.145",
        "lessThan": "6.6.161",
        "status": "affected",
        "versionType": "semver"
      },
      {
        "version": "6.12.97",
        "lessThan": "6.12.115",
        "status": "affected",
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      },
      {
        "version": "6.18.39",
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      },
      {
        "version": "7.1.4",
        "lessThan": "7.2",
        "status": "affected",
        "versionType": "semver"
      }
    ]
  },
  {
    "product": "Linux",
    "vendor": "Linux",
    "defaultStatus": "affected",
    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
    "programFiles": [
      "net/bluetooth/l2cap_core.c",
      "net/bluetooth/l2cap_sock.c"
    ],
    "versions": [
      {
        "version": "7.2",
        "status": "affected"
      },
      {
        "version": "0",
        "lessThan": "7.2",
        "status": "unaffected",
        "versionType": "semver"
      },
      {
        "version": "5.10.273",
        "lessThanOrEqual": "5.10.*",
        "status": "unaffected",
        "versionType": "semver"
      },
      {
        "version": "5.15.224",
        "lessThanOrEqual": "5.15.*",
        "status": "unaffected",
        "versionType": "semver"
      },
      {
        "version": "6.1.191",
        "lessThanOrEqual": "6.1.*",
        "status": "unaffected",
        "versionType": "semver"
      },
      {
        "version": "6.6.161",
        "lessThanOrEqual": "6.6.*",
        "status": "unaffected",
        "versionType": "semver"
      },
      {
        "version": "6.12.115",
        "lessThanOrEqual": "6.12.*",
        "status": "unaffected",
        "versionType": "semver"
      },
      {
        "version": "6.18.60",
        "lessThanOrEqual": "6.18.*",
        "status": "unaffected",
        "versionType": "semver"
      },
      {
        "version": "7.2.14",
        "lessThanOrEqual": "7.2.*",
        "status": "unaffected",
        "versionType": "semver"
      },
      {
        "version": "7.3.1",
        "lessThanOrEqual": "7.3.*",
        "status": "unaffected",
        "versionType": "semver"
      }
    ]
  }
]

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02 Nov 2026 16:06Current
CVSS 3.17.8
6