cpufreq: intel_pstate: Fix object lifecycle issue in update_qos_request()
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 early
because the latter subsequently calls freq_qos_update_request() that
indirectly accesses the policy object in question through the QoS request
object 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 operation
mode, but it theoretically can cause a crash to occur on CPU device hot
removal (which currently can only happen in virt, but it is formally
supported nevertheless).
Address this issue by modifying update_qos_request() to drop the
reference to the policy later.
CVE 정보
EPSS
EPSS는 취약점이 악용될 가능성을 예측하는 점수 모델입니다.
EPSS 점수
EPSS 모델은 0과 1(0~100%) 사이의 확률 점수를 생성합니다. 점수가 높을수록 취약점이 악용될 가능성이 높습니다.
날짜
EPSS V0
EPSS V1
EPSS V2 (> 2022-02-04)
EPSS V3 (> 2025-03-07)
EPSS V4 (> 2025-03-17)
2025-11-13
–
–
–
–
0.02%
2025-11-15
–
–
–
–
0.02%
2025-11-18
–
–
–
–
0.03%
2025-11-21
–
–
–
–
0.03%
2025-11-28
–
–
–
–
0.03%
2025-11-29
–
–
–
–
0.03%
2025-12-14
–
–
–
–
0.04%
2025-12-18
–
–
–
–
0.06%
2026-01-05
–
–
–
–
0.05%
2026-01-19
–
–
–
–
0.05%
2026-03-01
–
–
–
–
0.05%
2026-03-15
–
–
–
–
0.07%
2026-04-12
–
–
–
–
0.04%
2026-04-26
–
–
–
–
0.06%
2026-06-14
–
–
–
–
0.07%
EPSS 백분위수
백분위수는 EPSS 점수에 따라 CVE의 순위를 매기는 데 사용됩니다. 예를 들어 EPSS 점수 기준 95번째 백분위수의 CVE는 다른 CVE의 95%보다 악용될 가능성이 높습니다.