CVE-2025-21841
CVE-2025-21841 is a medium-severity vulnerability in Linux Linux Kernel with a CVSS 3.x base score of 5.5. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low.
Key facts
- Severity: Medium (CVSS 3.x base score 5.5)
- EPSS exploit prediction: 0% (7th percentile)
- Actively exploited: Not listed in CISA KEV
- EU (EUVD) id: EUVD-2025-7592
- Affected product: Linux Linux Kernel
- Published:
- Last modified:
Description
In the Linux kernel, the following vulnerability has been resolved: cpufreq/amd-pstate: Fix cpufreq_policy ref counting amd_pstate_update_limits() takes a cpufreq_policy reference but doesn't decrement the refcount in one of the exit paths, fix that.
Frequently asked questions
- What is CVE-2025-21841?
- In the Linux kernel, the following vulnerability has been resolved: cpufreq/amd-pstate: Fix cpufreq_policy ref counting amd_pstate_update_limits() takes a cpufreq_policy reference but doesn't decrement the refcount in one of the exit paths, fix that.
- How severe is CVE-2025-21841?
- CVE-2025-21841 has a CVSS 3.x base score of 5.5, rated medium severity. It is exploitable over local access with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability high.
- Is CVE-2025-21841 being actively exploited?
- It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (7th percentile), an estimate of the probability of exploitation in the next 30 days.
- What products are affected by CVE-2025-21841?
- CVE-2025-21841 primarily affects Linux Linux Kernel. In total, 2 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
- How do I fix CVE-2025-21841?
- Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
- Does CVE-2025-21841 have an EU (EUVD) identifier?
- Yes. CVE-2025-21841 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-7592.
- When was CVE-2025-21841 published?
- CVE-2025-21841 was published on 2025-03-07 and last updated on 2026-06-17.
References
- https://git.kernel.org/stable/c/28e4c515cf644c621800bd97841757fd49891ba4
- https://git.kernel.org/stable/c/3ace20038e19f23fe73259513f1f08d4bf1a3c83
- https://git.kernel.org/stable/c/56e6976793c0fcf1638aa534242408ab4e4ca705
Affected products (2)
- cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
- cpe:2.3:o:linux:linux_kernel:6.14:rc1:*:*:*:*:*:*
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