High 8.8Published Dec 30, 2025

CVE-2023-54214Bluetooth: L2CAP: Fix potential user-after-free

Updated under an hour ago (Oct 28, 2026, 8:00 AM ET)

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Exploited in the last 30 days

In the Linux kernel, the following vulnerability has been resolved: Bluetooth: L2CAP: Fix potential user-after-free This fixes all instances of which requires to allocate a buffer calling alloc_skb which may release the chan lock and reacquire later which makes it possible that the chan is disconnected in the meantime.

CVSS: 8.8 HIGH (v3.1, CNA)CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Weakness (CWE): Not given
Known exploited: Not in CISA's KEV catalog
EPSS (exploitation in the next 30 days): Not loaded for this CVE
Assigned by: Linux
NVD analysis: Deferred
Record last updated: Oct 15, 2026
First seen by InfoSec Signals: Oct 9, 2026

Affected products

Affected products

Linux Linux linux:linux (from the name)	from a6a5568c03c4805d4d250f6bd9d468eeeb4ea059 before b2fde8cb2a25125111f2144604e0e7c0ebcc4bba; from a6a5568c03c4805d4d250f6bd9d468eeeb4ea059 before a6a7d1541fefddf7ca0cfb34c1bff63ff809cc49; from a6a5568c03c4805d4d250f6bd9d468eeeb4ea059 before 60aaccf16d1e099c16bebfb96428ae762cb528f7; from a6a5568c03c4805d4d250f6bd9d468eeeb4ea059 before b8ed41cc04fb74005aa51d17865ca3d022760335; from a6a5568c03c4805d4d250f6bd9d468eeeb4ea059 before 31a288a4df7f6a28e65da22a4ab2add4a963738e; from a6a5568c03c4805d4d250f6bd9d468eeeb4ea059 before 64e28ecf44e46de9f01915a4146706a21c3469d2; from a6a5568c03c4805d4d250f6bd9d468eeeb4ea059 before 994e3e18908f5c4a12d07b44018e6aa85f071048; from a6a5568c03c4805d4d250f6bd9d468eeeb4ea059 before df5703348813235874d851934e957c3723d71644	CNA record

References

References

https://git.kernel.org/stable/c/b2fde8cb2a25125111f2144604e0e7c0ebcc4bba
https://git.kernel.org/stable/c/a6a7d1541fefddf7ca0cfb34c1bff63ff809cc49
https://git.kernel.org/stable/c/60aaccf16d1e099c16bebfb96428ae762cb528f7
https://git.kernel.org/stable/c/b8ed41cc04fb74005aa51d17865ca3d022760335
https://git.kernel.org/stable/c/31a288a4df7f6a28e65da22a4ab2add4a963738e
https://git.kernel.org/stable/c/64e28ecf44e46de9f01915a4146706a21c3469d2
https://git.kernel.org/stable/c/994e3e18908f5c4a12d07b44018e6aa85f071048
https://git.kernel.org/stable/c/df5703348813235874d851934e957c3723d71644

The CVE record on cve.org NVD's entry

The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.