CVE-2022-49555: Linux Kernel

Medium severity, CVSS 5.5. EPSS: 0.3% chance of exploitation in the next 30 days.

In the Linux kernel, the following vulnerability has been resolved: Bluetooth: hci_qca: Use del_timer_sync() before freeing While looking at a crash report on a timer list being corrupted, which usually happens when a timer is freed while still active. This is commonly triggered by code calling del_timer() instead of del_timer_sync() just before freeing. One possible culprit is the hci_qca driver, which does exactly that. Eric mentioned that wake_retrans_timer could be rearmed via the work queue, so also move the destruction of the work queue before del_timer_sync().

Affected products

• Linux Linux Kernel: from 4.3, before 5.10.120 (fixed in 5.10.120); from 5.11, before 5.15.45 (fixed in 5.15.45); from 5.16, before 5.17.13 (fixed in 5.17.13); from 5.18, before 5.18.2 (fixed in 5.18.2)

Published 2025-02-26. Last modified 2026-08-04.