Use After Free in Linux
CVE-2022-50305
In the Linux kernel, the following vulnerability has been resolved: ASoC: sof_es8336: fix possible use-after-free in sof_es8336_remove() sof_es8336_remove() calls cancel_delayed_work(). However, that function does not wait until the work function finishes. This means that the callback function may still be running after the driver's remove function has finished, which would result in a use-after-free. Fix by calling cancel_delayed_work_sync(), which ensures that the work is properly cancelled, no longer running, and unable to re-schedule itself.
Vulnerability class: Use-After-Free
EPSS: 0.001 (4.4th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 7.8 (High). Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H.
Affected products
- Linux — versions 89cdb224f2abe37ec4ac21ba0d9ddeb5a6a9cf68, 6.2, 6.0.16
- Linux Linux_kernel — versions 6.1
Weakness classification (CWE)
References
Frequently asked questions
- What is CVE-2022-50305?
- CVE-2022-50305 is a high-severity vulnerability in Linux, classified under Use After Free. CVSS score: 7.8/10. Published 2025-09-15.
- How severe is CVE-2022-50305?
- High severity. CVSS v3 base score is 7.8 out of 10.