CVE-2022-49493
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…
Does this matter?
High impact if exploited, but EPSS currently rates exploitation as unlikely (0.26%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.
Description
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.
- CVSS 3.1
- 7.8 HIGHCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
- EPSS
- 0.26% probability · 18th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-416
- Affected
- linux/linux kernel
- Source
- 416baaa9-dc9f-4396-8d5f-8c081fb06d67
References
- https://git.kernel.org/stable/c/061a6159cea583f1155f67d1915917a6b9282662Patch
- https://git.kernel.org/stable/c/0941150100173d4eaf3fe08ff4b16740e7c3026fPatch
- https://git.kernel.org/stable/c/1a5a3dfd9f172dcb115072f0aea5e27d3083c20ePatch
- https://git.kernel.org/stable/c/236d29c5857f02e0a53fdf15d3dce1536c4322cePatch
- https://git.kernel.org/stable/c/2def44d3aec59e38d2701c568d65540783f90f2fPatch
- https://git.kernel.org/stable/c/453f0920ffc1a28e28ddb9c3cd5562472b2895b0Patch
- https://git.kernel.org/stable/c/88c09e4812d72c3153afc8e5a45ecac2d0eae3ffPatch
- https://git.kernel.org/stable/c/abe7554da62cb489712a54de69ef5665c250e564Patch
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.