CVE-2026-53208

🗓️ 25 Jun 2026 08:39:14Reported by LinuxType

Linux Bluetooth L2CAP could accept signaling packets above MTUsig before pairing, enabling echoes; now rejects with MTU_EXCEEDED.

Reporter	Title	Published	Views	Family All 6
ATTACKERKB	CVE-2026-53208	25 Jun 202608:39	–	attackerkb
Cvelist	CVE-2026-53208 Bluetooth: L2CAP: reject BR/EDR signaling packets over MTUsig	25 Jun 202608:39	–	cvelist
Debian CVE	CVE-2026-53208	25 Jun 202608:39	–	debiancve
EUVD	EUVD-2026-39299	25 Jun 202608:39	–	euvd
NVD	CVE-2026-53208	25 Jun 202609:16	–	nvd
Positive Technologies	PT-2026-52304	25 Jun 202600:00	–	ptsecurity

Vulners

CNA

Node

linux linux_kernelRange0–5.10.259

linux linux_kernelRange0–5.15.210

linux linux_kernelRange0–6.1.176

linux linux_kernelRange0–6.6.143

linux linux_kernelRange0–6.12.94

linux linux_kernelRange0–6.18.36

linux linux_kernelRange0–7.0.13

linux linux_kernelRange5.10.0–5.10.259

linux linux_kernelRange5.11.0–5.15.210

linux linux_kernelRange5.16.0–6.1.176

linux linux_kernelRange6.2.0–6.6.143

linux linux_kernelRange6.7.0–6.12.94

linux linux_kernelRange6.13.0–6.18.36

linux linux_kernelRange6.19.0–7.0.13

linux linux_kernelRange7.1.0≥

[
  {
    "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": "1da177e4c3f41524e886b7f1b8a0c1fc7321cac2",
        "lessThan": "e05c4ac575b457978a7ef441053394169084869c",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "1da177e4c3f41524e886b7f1b8a0c1fc7321cac2",
        "lessThan": "fa5823126239b3e453fac1a2fe50726c7f4a55e1",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "1da177e4c3f41524e886b7f1b8a0c1fc7321cac2",
        "lessThan": "b20e8a98dd29b121f58fcdf51e8576119aba536a",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "1da177e4c3f41524e886b7f1b8a0c1fc7321cac2",
        "lessThan": "214a2042b16b3c8d798a8b9ef9f36094f13a9859",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "1da177e4c3f41524e886b7f1b8a0c1fc7321cac2",
        "lessThan": "a8335f3db15bd1e0e82e0db5d488fabc7d10d1ab",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "1da177e4c3f41524e886b7f1b8a0c1fc7321cac2",
        "lessThan": "dedc92b96dc1d8919a3bdf2495ede68922ef7ebc",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "1da177e4c3f41524e886b7f1b8a0c1fc7321cac2",
        "lessThan": "e2b8acf9405bd9b1baf1c54dc897b0905db689bf",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "1da177e4c3f41524e886b7f1b8a0c1fc7321cac2",
        "lessThan": "dd214733544427587a95f66dbf3adff072568990",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "0",
        "lessThan": "5.10.259",
        "status": "affected",
        "versionType": "semver"
      },
      {
        "version": "0",
        "lessThan": "5.15.210",
        "status": "affected",
        "versionType": "semver"
      },
      {
        "version": "0",
        "lessThan": "6.1.176",
        "status": "affected",
        "versionType": "semver"
      },
      {
        "version": "0",
        "lessThan": "6.6.143",
        "status": "affected",
        "versionType": "semver"
      },
      {
        "version": "0",
        "lessThan": "6.12.94",
        "status": "affected",
        "versionType": "semver"
      },
      {
        "version": "0",
        "lessThan": "6.18.36",
        "status": "affected",
        "versionType": "semver"
      },
      {
        "version": "0",
        "lessThan": "7.0.13",
        "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": "5.10.259",
        "lessThanOrEqual": "5.10.*",
        "status": "unaffected",
        "versionType": "semver"
      },
      {
        "version": "5.15.210",
        "lessThanOrEqual": "5.15.*",
        "status": "unaffected",
        "versionType": "semver"
      },
      {
        "version": "6.1.176",
        "lessThanOrEqual": "6.1.*",
        "status": "unaffected",
        "versionType": "semver"
      },
      {
        "version": "6.6.143",
        "lessThanOrEqual": "6.6.*",
        "status": "unaffected",
        "versionType": "semver"
      },
      {
        "version": "6.12.94",
        "lessThanOrEqual": "6.12.*",
        "status": "unaffected",
        "versionType": "semver"
      },
      {
        "version": "6.18.36",
        "lessThanOrEqual": "6.18.*",
        "status": "unaffected",
        "versionType": "semver"
      },
      {
        "version": "7.0.13",
        "lessThanOrEqual": "7.0.*",
        "status": "unaffected",
        "versionType": "semver"
      },
      {
        "version": "7.1",
        "lessThanOrEqual": "*",
        "status": "unaffected",
        "versionType": "original_commit_for_fix"
      }
    ]
  }
]

Source	Link
git	www.git.kernel.org/stable/c/e2b8acf9405bd9b1baf1c54dc897b0905db689bf
git	www.git.kernel.org/stable/c/a8335f3db15bd1e0e82e0db5d488fabc7d10d1ab
git	www.git.kernel.org/stable/c/fa5823126239b3e453fac1a2fe50726c7f4a55e1
git	www.git.kernel.org/stable/c/dd214733544427587a95f66dbf3adff072568990
git	www.git.kernel.org/stable/c/dedc92b96dc1d8919a3bdf2495ede68922ef7ebc
git	www.git.kernel.org/stable/c/b20e8a98dd29b121f58fcdf51e8576119aba536a
git	www.git.kernel.org/stable/c/e05c4ac575b457978a7ef441053394169084869c
git	www.git.kernel.org/stable/c/214a2042b16b3c8d798a8b9ef9f36094f13a9859

25 Jun 2026 09:16Current

5.8Medium risk

Vulners AI Score5.8