CVE-2021-41229: Bluez
Medium severity, CVSS 6.5. EPSS: 1.2% chance of exploitation in the next 30 days.
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.
Affected products
Published 2021-11-12. Last modified 2026-06-17.