CVE-2023-54214
High
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.
SeverityHigh
CVSS8.8
Exploit probability—
Product
Linux
PublishedDec 30, 2025
First seenDec 30, 2025
How to fix
Update
- Linux Linuxb2fde8cb2a25125111f2144604e0e7c0ebcc4bba, a6a7d1541fefddf7ca0cfb34c1bff63ff809cc49, 60aaccf16d1e099c16bebfb96428ae762cb528f7, b8ed41cc04fb74005aa51d17865ca3d022760335, 31a288a4df7f6a28e65da22a4ab2add4a963738e, 64e28ecf44e46de9f01915a4146706a21c3469d2, 994e3e18908f5c4a12d07b44018e6aa85f071048, df5703348813235874d851934e957c3723d71644 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| Linux Linux | a6a5568c03c4805d4d250f6bd9d468eeeb4ea059 ≤ v < b2fde8cb2a25125111f2144604e0e7c0ebcc4bba, a6a5568c03c4805d4d250f6bd9d468eeeb4ea059 ≤ v < a6a7d1541fefddf7ca0cfb34c1bff63ff809cc49, a6a5568c03c4805d4d250f6bd9d468eeeb4ea059 ≤ v < 60aaccf16d1e099c16bebfb96428ae762cb528f7, a6a5568c03c4805d4d250f6bd9d468eeeb4ea059 ≤ v < b8ed41cc04fb74005aa51d17865ca3d022760335, a6a5568c03c4805d4d250f6bd9d468eeeb4ea059 ≤ v < 31a288a4df7f6a28e65da22a4ab2add4a963738e, a6a5568c03c4805d4d250f6bd9d468eeeb4ea059 ≤ v < 64e28ecf44e46de9f01915a4146706a21c3469d2, a6a5568c03c4805d4d250f6bd9d468eeeb4ea059 ≤ v < 994e3e18908f5c4a12d07b44018e6aa85f071048, a6a5568c03c4805d4d250f6bd9d468eeeb4ea059 ≤ v < df5703348813235874d851934e957c3723d71644, 3.5 | b2fde8cb2a25125111f2144604e0e7c0ebcc4bba, a6a7d1541fefddf7ca0cfb34c1bff63ff809cc49, 60aaccf16d1e099c16bebfb96428ae762cb528f7, b8ed41cc04fb74005aa51d17865ca3d022760335, 31a288a4df7f6a28e65da22a4ab2add4a963738e, 64e28ecf44e46de9f01915a4146706a21c3469d2, 994e3e18908f5c4a12d07b44018e6aa85f071048, df5703348813235874d851934e957c3723d71644 |
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