CVE-2023-54214
Unknown Unknown - Not Provided
Use-After-Free Vulnerability in Linux Kernel Bluetooth L2CAP

Publication date: 2025-12-30

Last updated on: 2025-12-30

Assigner: kernel.org

Description
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.
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Meta Information
Published
2025-12-30
Last Modified
2025-12-30
Generated
2026-06-16
AI Q&A
2025-12-30
EPSS Evaluated
2026-06-15
NVD
CVE-2023-54214
EUVD
EUVD-2023-60427
Affected Vendors & Products
Showing 1 associated CPE
Vendor Product Version / Range
linux linux_kernel *
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Exploitability
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CWE ID Description
CWE-UNKNOWN
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Executive Summary

This vulnerability in the Linux kernel's Bluetooth L2CAP component involves a potential user-after-free issue. It occurs because the code allocates a buffer using alloc_skb, which may release and later reacquire a channel lock. During this time, the channel could be disconnected, leading to a use of memory that has already been freed.

Impact Analysis

This vulnerability can lead to use-after-free conditions, which may cause system instability, crashes, or potentially allow an attacker to execute arbitrary code or cause denial of service via the Bluetooth subsystem.

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