CVE-2025-21841— cpufreq/amd-pstate: Fix cpufreq_policy ref counting
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I. Basic Information for CVE-2025-21841
Vulnerability Information
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Vulnerability Title
cpufreq/amd-pstate: Fix cpufreq_policy ref counting
Source: NVD (National Vulnerability Database)
Vulnerability 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.
Source: NVD (National Vulnerability Database)
CVSS Information
N/A
Source: NVD (National Vulnerability Database)
Vulnerability Type
N/A
Source: NVD (National Vulnerability Database)
Vulnerability Title
Linux kernel 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Linux kernel是美国Linux基金会的开源操作系统Linux所使用的内核。 Linux kernel存在安全漏洞，该漏洞源于amd_pstate_update_limits函数未正确释放cpufreq_policy引用计数。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)
Affected Products
II. Public POCs for CVE-2025-21841
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Same Patch Batch · Linux · 2025-03-07 · 8 CVEs total
| CVE-2025-21835 | usb: gadget: f_midi: fix MIDI Streaming descriptor lengths | |
| CVE-2025-21836 | io_uring/kbuf: reallocate buf lists on upgrade | |
| CVE-2025-21838 | usb: gadget: core: flush gadget workqueue after device removal | |
| CVE-2025-21839 | KVM: x86: Load DR6 with guest value only before entering .vcpu_run() loop | |
| CVE-2025-21840 | thermal/netlink: Prevent userspace segmentation fault by adjusting UAPI header | |
| CVE-2025-21842 | amdkfd: properly free gang_ctx_bo when failed to init user queue | |
| CVE-2025-21843 | drm/panthor: avoid garbage value in panthor_ioctl_dev_query() |
IV. Related Vulnerabilities
Same product: Linux
- CVE-2026-43500
rxrpc: Also unshare DATA/RESPONSE packets when paged frags a - CVE-2026-43475
scsi: storvsc: Fix scheduling while atomic on PREEMPT_RT - CVE-2026-43474
fs: init flags_valid before calling vfs_fileattr_get - CVE-2026-43473
scsi: mpi3mr: Add NULL checks when resetting request and rep - CVE-2026-43472
unshare: fix unshare_fs() handling
Same vendor: Linux
- CVE-2026-43500
rxrpc: Also unshare DATA/RESPONSE packets when paged frags a - CVE-2026-43475
scsi: storvsc: Fix scheduling while atomic on PREEMPT_RT - CVE-2026-43474
fs: init flags_valid before calling vfs_fileattr_get - CVE-2026-43473
scsi: mpi3mr: Add NULL checks when resetting request and rep - CVE-2026-43472
unshare: fix unshare_fs() handling
V. Comments for CVE-2025-21841
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