CVE-2025-21952 HID: corsair-void: Update power supply values with a unified work handler

What is CVE-2025-21952?

CVE-2025-21952 is a medium-severity vulnerability in Linux kernel, published on 1 Apr 2025. It can only be exploited from the same machine or local network, with no action from the victim.

Official description

In the Linux kernel, the following vulnerability has been resolved:

HID: corsair-void: Update power supply values with a unified work handler

corsair_void_process_receiver can be called from an interrupt context, locking battery_mutex in it was causing a kernel panic. Fix it by moving the critical section into its own work, sharing this work with battery_add_work and battery_remove_work to remove the need for any locking

Which versions are affected by CVE-2025-21952?

It affects 1 product.

Products include Linux kernel.

How do I fix CVE-2025-21952?

Apply the vendor's patch.

Is CVE-2025-21952 being exploited?

There is no known exploitation of CVE-2025-21952 in the wild and no public exploit code.

Other vulnerabilities in Linux kernel

• CVE-2026-53266 Linux Kernel Out-of-Bounds Write Exploited High 8.8
• CVE-2013-6282 Linux Kernel Improper Input Validation Exploited High 8.8
• CVE-2022-0185 Linux Kernel Heap-Based Buffer Overflow Exploited High 8.4
• CVE-2013-2094 Linux Kernel Privilege Escalation Exploited High 8.4
• CVE-2026-53362 Linux Kernel Unspecified Exploited High 7.8

All Linux kernel vulnerabilities

Sources

• CVE record
• NVD
• OSV
• GitHub advisory
• How this page is made

Also known as BELL-CVE-2025-21952, GHSA-p8mv-7r9h-cfvf, UBUNTU-CVE-2025-21952.