CVE-2022-49555

Bluetooth: hci_qca: Use del_timer_sync() before freeing

State: Published
Severity: 7.8 High
Published: Feb 26, 2025
Updated: Aug 5, 2026
Reserved: Feb 26, 2025

Description

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().

Scores

CVSS	Score	Vector	Source
3.1	7.8 High	CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H	Linux

Weaknesses

The record names no weakness.

Affected Products

Product	Versions
LinuxLinux	0ff252c1976da5d80db1377eb39b551931e61826 to before 4989bb03342941f2b730b37dfa38bce27b543661Affected 0ff252c1976da5d80db1377eb39b551931e61826 to before db03727b4bbbbb36e6ef4cb655c670eefb6448e9Affected 0ff252c1976da5d80db1377eb39b551931e61826 to before 37d17f63d085d601011964ade7371aeebeb6ed4bAffected 0ff252c1976da5d80db1377eb39b551931e61826 to before 2717654ae022e6ea959a4b7b762702fe1a4690c2Affected 0ff252c1976da5d80db1377eb39b551931e61826 to before 72ef98445aca568a81c2da050532500a8345ad3aAffected
LinuxLinux	4.3Affected before 4.3Not affected 5.10.120 through 5.10.Not affected 5.15.45 through 5.15.Not affected 5.17.13 through 5.17.Not affected 5.18.2 through 5.18.Not affected 5.19 and laterNot affected

Product

Versions

LinuxLinux

0ff252c1976da5d80db1377eb39b551931e61826 to before 4989bb03342941f2b730b37dfa38bce27b543661Affected
0ff252c1976da5d80db1377eb39b551931e61826 to before db03727b4bbbbb36e6ef4cb655c670eefb6448e9Affected
0ff252c1976da5d80db1377eb39b551931e61826 to before 37d17f63d085d601011964ade7371aeebeb6ed4bAffected
0ff252c1976da5d80db1377eb39b551931e61826 to before 2717654ae022e6ea959a4b7b762702fe1a4690c2Affected
0ff252c1976da5d80db1377eb39b551931e61826 to before 72ef98445aca568a81c2da050532500a8345ad3aAffected

LinuxLinux

4.3Affected
before 4.3Not affected
5.10.120 through 5.10.*Not affected
5.15.45 through 5.15.*Not affected
5.17.13 through 5.17.*Not affected
5.18.2 through 5.18.*Not affected
5.19 and laterNot affected

References

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