CVE-2022-49555

Bluetooth: hci_qca: Use del_timer_sync() before freeing

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().

N/A

CVSS

Severity:

EPSS 0.03%

Affected: Linux Linux

References

Link	Tags
https://git.kernel.org/stable/c/4989bb03342941f2b730b37dfa38bce27b543661
https://git.kernel.org/stable/c/db03727b4bbbbb36e6ef4cb655c670eefb6448e9
https://git.kernel.org/stable/c/37d17f63d085d601011964ade7371aeebeb6ed4b
https://git.kernel.org/stable/c/2717654ae022e6ea959a4b7b762702fe1a4690c2
https://git.kernel.org/stable/c/72ef98445aca568a81c2da050532500a8345ad3a

Frequently Asked Questions

What is the severity of CVE-2022-49555?: CVE-2022-49555 has not yet been assigned a CVSS score.
How to fix CVE-2022-49555?: To fix CVE-2022-49555, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2022-49555 being actively exploited in the wild?: As for now, there are no information to confirm that CVE-2022-49555 is being actively exploited. According to its EPSS score, there is a ~0% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
What software or system is affected by CVE-2022-49555?: CVE-2022-49555 affects Linux Linux, Linux Linux.

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