Tracker / CVE-2022-49493
CVE-2022-49493
High 7.8
In the Linux kernel, the following vulnerability has been resolved: ASoC: rt5645: Fix errorenous cleanup order There is a logic error when removing rt5645 device as the function rt5645_i2c_remove() first cancel the &rt5645->jack_detect_work and delete the &rt5645->btn_check_timer latter. However, since the timer handler rt5645_btn_check_callback() will re-queue the jack_detect_work, this cleanup order is buggy. That is, once the del_timer_sync in rt5645_i2c_remove is concurrently run with the rt5645_btn_check_callback, the canceled jack_detect_work will be rescheduled again, leading to possible use-after-free. This patch fix the issue by placing the del_timer_sync function before the cancel_delayed_work_sync.
Affected products and versions
| linux | linux_kernel · … → 4.9.318 |
|---|---|
| linux | linux_kernel · 4.10 → 4.14.283 |
| linux | linux_kernel · 4.15 → 4.19.247 |
| linux | linux_kernel · 4.20 → 5.4.198 |
| linux | linux_kernel · 5.11 → 5.15.46 |
| linux | linux_kernel · 5.16 → 5.17.14 |
| linux | linux_kernel · 5.18 → 5.18.3 |
| linux | linux_kernel · 5.5 → 5.10.121 |
Analysis
This page is not indexable yet.Until it carries original analysis — what it actually exposes, how to check in two minutes whether a system was touched, what to do if it was — the page stays noindex. The database decides that, not the template.