CVE-2022-49555
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().
How to fix
- linux linux_kernel5.10.120, 5.15.45, 5.17.13, 5.18.2 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| linux linux_kernel | 4.3 ≤ v < 5.10.120, 5.11 ≤ v < 5.15.45, 5.16 ≤ v < 5.17.13, 5.18 ≤ v < 5.18.2 | 5.10.120, 5.15.45, 5.17.13, 5.18.2 |
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