Vulnerability in Linux

CVE-2023-54214

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.

Published · last modified .

CVSS v3 metric

CVSS v3 base score 8.8 (High). Vector: CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.

EPSS exploit prediction

EPSS: 0.003 (20.4th percentile), scored .

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 20th percentile — 20.4% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS trend (30 days)EPSS over the last 30 days for CVE-2023-54214: held from 0.003 to 0.003.

EPSS over last 30 days · oldest: 0.003 · newest: 0.003 · change: +0.000

Affected products

  • Linux — versions a6a5568c03c4805d4d250f6bd9d468eeeb4ea059, 3.5, 0

References

Frequently asked questions

What is CVE-2023-54214?
CVE-2023-54214 is a high-severity vulnerability in Linux. CVSS score: 8.8/10. Published 2025-12-30.
How severe is CVE-2023-54214?
High severity. CVSS v3 base score is 8.8 out of 10.