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CVE-2026-74540 Bluetooth: L2CAP: fix UAF in l2cap_le_connect_rsp

🗓️ 15 Aug 2026 12:27:51Reported by LinuxType 
cvelist
 cvelist
🔗 www.cve.org👁 37 Views

Linux kernel L2CAP l2cap_le_connect_rsp use-after-free allows remote disconnect to crash or corrupt memory.

Related
Affected
Refs
[
  {
    "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"
    ],
    "versions": [
      {
        "version": "f1496dee9cbde2a62821f4441dadb0d3360f60c3",
        "lessThan": "15d6c2367217a6a20b1abae9f38ded716bf620f1",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "f1496dee9cbde2a62821f4441dadb0d3360f60c3",
        "lessThan": "1818180fe12d6cec7a437bc59cde8efdf6b10250",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "f1496dee9cbde2a62821f4441dadb0d3360f60c3",
        "lessThan": "8325eafb38c3dee5af329266393763693d17381b",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "f1496dee9cbde2a62821f4441dadb0d3360f60c3",
        "lessThan": "fd4c1e301bdec60a40728ea37de531cbccda501a",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "f1496dee9cbde2a62821f4441dadb0d3360f60c3",
        "lessThan": "522b730c62c53a1981604fd73524697fd347830d",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "f1496dee9cbde2a62821f4441dadb0d3360f60c3",
        "lessThan": "58e3c5289ad230a7e24ae4b0c7b43f5ee6e32136",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "f1496dee9cbde2a62821f4441dadb0d3360f60c3",
        "lessThan": "09f447accc2570751e7d17f0dc0788b40d3edade",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "f1496dee9cbde2a62821f4441dadb0d3360f60c3",
        "lessThan": "c4740e7f23ff9a8210198d8b4703259e21b9f69d",
        "status": "affected",
        "versionType": "git"
      }
    ]
  },
  {
    "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"
    ],
    "versions": [
      {
        "version": "3.14",
        "status": "affected"
      },
      {
        "version": "0",
        "lessThan": "3.14",
        "status": "unaffected",
        "versionType": "semver"
      },
      {
        "version": "5.10.265",
        "lessThanOrEqual": "5.10.*",
        "status": "unaffected",
        "versionType": "semver"
      },
      {
        "version": "5.15.216",
        "lessThanOrEqual": "5.15.*",
        "status": "unaffected",
        "versionType": "semver"
      },
      {
        "version": "6.1.183",
        "lessThanOrEqual": "6.1.*",
        "status": "unaffected",
        "versionType": "semver"
      },
      {
        "version": "6.6.151",
        "lessThanOrEqual": "6.6.*",
        "status": "unaffected",
        "versionType": "semver"
      },
      {
        "version": "6.12.103",
        "lessThanOrEqual": "6.12.*",
        "status": "unaffected",
        "versionType": "semver"
      },
      {
        "version": "6.18.44",
        "lessThanOrEqual": "6.18.*",
        "status": "unaffected",
        "versionType": "semver"
      },
      {
        "version": "7.1.8",
        "lessThanOrEqual": "7.1.*",
        "status": "unaffected",
        "versionType": "semver"
      },
      {
        "version": "7.2",
        "lessThanOrEqual": "*",
        "status": "unaffected",
        "versionType": "original_commit_for_fix"
      }
    ]
  }
]

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19 Aug 2026 16:38Current
CVSS 3.18.8
EPSS0.00255
37