PT-2025-40728 · Linux+2 · Linux Kernel+2
CVE-2022-50494
·
Published
2022-09-20
·
Updated
2025-12-23
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 5.19.0-rc7+
Description
The Linux kernel contains an issue where using
smp processor id() can lead to a kernel crash when CPU 0 is offline and intel powerclamp is used to inject idle. This occurs because the function is called in preemptible code, resulting in a BUG. The issue is triggered when CPU 0 is the control CPU and is subsequently taken offline. The fix involves using get cpu() instead of smp processor id() to avoid the crash.Recommendations
Update to a version later than 5.19.0-rc7+ to resolve this issue.
Exploit
Fix
Special Elements Injection
Improper Neutralization
RCE
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Related Identifiers
Affected Products
Linux Kernel
Red Hat
Suse