CVE-2025-40194

Description

In the Linux kernel, the following vulnerability has been resolved:cpufreq: intel_pstate: Fix object lifecycle issue in update_qos_request()The cpufreq_cpu_put() call in update_qos_request() takes place too earlybecause the latter subsequently calls freq_qos_update_request() thatindirectly accesses the policy object in question through the QoS requestobject passed to it.Fortunately, update_qos_request() is called under intel_pstate_driver_lock,so this issue does not matter for changing the intel_pstate operationmode, but it theoretically can cause a crash to occur on CPU device hotremoval (which currently can only happen in virt, but it is formallysupported nevertheless).Address this issue by modifying update_qos_request() to drop thereference to the policy later.

Risk Information

Base Score

5.8

MODERATE

Vector

CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:L/I:L/A:H

EPSS Score

Exploitation Probability

0.053

Associated Vulnerability

No records found

Patch Details

No records found

References

https://nvd.nist.gov/vuln/detail/CVE-2023-1234
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2023-1234