PT-2024-14672 · Linux+6 · Linux Kernel+6
Joyyoung Huang
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Published
2023-11-25
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Updated
2025-09-29
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CVE-2023-52635
CVSS v3.1
5.5
Medium
| Vector | AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H |
Name of the Vulnerable Software and Affected Versions
Linux kernel versions prior to 5.10.149
Description
The vulnerability is related to the devfreq driver in the Linux kernel. It occurs when the governor is frequently switched in a loop, resulting in timer list corruption. This corruption happens because timer cancel is done from two places: one from
cancel delayed work sync() and the other from expire timers(). The issue can be resolved by synchronizing devfreq monitor [start/stop] using a polling flag and devfreq lock to prevent delayed work and timer instance corruption.Recommendations
To resolve the issue, update the Linux kernel to a version that includes the fix for this vulnerability. If an update is not available, consider applying a patch that synchronizes
devfreq monitor [start/stop] to prevent timer list corruption. As a temporary workaround, avoid frequently switching the governor in a loop to minimize the risk of exploitation.Exploit
Fix
Infinite Loop
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Weakness Enumeration
Related Identifiers
Affected Products
Astra Linux
Linuxmint
Linux Kernel
Red Hat
Red Os
Suse
Ubuntu