CVE-2021-41229: Memory leak in BlueZ
First published: Fri Nov 12 2021(Updated: )
BlueZ is a Bluetooth protocol stack for Linux. In affected versions a vulnerability exists in sdp_cstate_alloc_buf which allocates memory which will always be hung in the singly linked list of cstates and will not be freed. This will cause a memory leak over time. The data can be a very large object, which can be caused by an attacker continuously sending sdp packets and this may cause the service of the target device to crash.
Credit: security-advisories@github.com
| Affected Software | Affected Version | How to fix |
|---|---|---|
| BlueZ BlueZ | =5.58 | |
| Debian Debian Linux | =9.0 | |
| Debian Debian Linux | =10.0 |
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Reference Links
Frequently Asked Questions
What is CVE-2021-41229?
CVE-2021-41229 is a vulnerability in the BlueZ Bluetooth protocol stack for Linux that allows for a memory leak over time.
How does CVE-2021-41229 affect BlueZ?
CVE-2021-41229 affects BlueZ versions 5.58 and potentially creates a memory leak over time.
Which versions of Debian Linux are affected by CVE-2021-41229?
CVE-2021-41229 affects Debian Linux versions 9.0 and 10.0.
What is the severity of CVE-2021-41229?
The severity of CVE-2021-41229 is medium with a CVSS score of 6.5.
How can I fix CVE-2021-41229?
To fix CVE-2021-41229, update your BlueZ or Debian Linux to the latest patched version.
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- vendor/bluez
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- version/bluez bluez/5.58
- vendor/debian
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- version/debian debian linux/9.0
- version/debian debian linux/10.0