CVE-2023-53386
Unknown
Unknown - Not Provided
BaseFortify
Publication date: 2025-09-18
Last updated on: 2025-12-11
Assigner: kernel.org
Description
Description
In the Linux kernel, the following vulnerability has been resolved:
Bluetooth: Fix potential use-after-free when clear keys
Similar to commit c5d2b6fa26b5 ("Bluetooth: Fix use-after-free in
hci_remove_ltk/hci_remove_irk"). We can not access k after kfree_rcu()
call.
CVSS Scores
EPSS Scores
| Probability: | |
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Meta Information
Affected Vendors & Products
| Vendor | Product | Version / Range |
|---|---|---|
| linux | linux_kernel | From 5.7 (inc) to 5.10.195 (exc) |
| linux | linux_kernel | From 5.11 (inc) to 5.15.132 (exc) |
| linux | linux_kernel | From 5.16 (inc) to 6.1.53 (exc) |
| linux | linux_kernel | From 6.2 (inc) to 6.4.16 (exc) |
| linux | linux_kernel | From 6.5 (inc) to 6.5.3 (exc) |
Helpful Resources
Exploitability
CWE
KEV
| CWE ID | Description |
|---|---|
| CWE-416 | The product reuses or references memory after it has been freed. At some point afterward, the memory may be allocated again and saved in another pointer, while the original pointer references a location somewhere within the new allocation. Any operations using the original pointer are no longer valid because the memory "belongs" to the code that operates on the new pointer. |
Attack-Flow Graph
AI Powered Q&A
Can you explain this vulnerability to me?
This vulnerability is a use-after-free issue in the Linux kernel's Bluetooth component. Specifically, it occurs when clearing keys, where the code attempts to access memory after it has been freed (kfree_rcu call), which can lead to undefined behavior or crashes.
How can this vulnerability impact me? :
The use-after-free vulnerability can potentially cause system instability, crashes, or be exploited to execute arbitrary code, leading to security risks on systems using the affected Linux kernel Bluetooth functionality.
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