Vulnerability in Linux
CVE-2025-21842
In the Linux kernel, the following vulnerability has been resolved: amdkfd: properly free gang_ctx_bo when failed to init user queue The destructor of a gtt bo is declared as void amdgpu_amdkfd_free_gtt_mem(struct amdgpu_device *adev, void **mem_obj); Which takes void** as the second parameter. GCC allows passing void* to the function because void* can be implicitly casted to any other types, so it can pass compiling. However, passing this void* parameter into the function's execution process(which expects void** and dereferencing void**) will result in errors.
EPSS: 0.002 (14.6th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 7.8 (High). Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H.
Affected products
- Linux — versions fb91065851cd5f2735348c5f3eddeeca3d7c2973, 6.12, 0
- Linux Linux_kernel — versions 6.14
Public proof-of-concept exploits
References
Frequently asked questions
- What is CVE-2025-21842?
- CVE-2025-21842 is a high-severity vulnerability in Linux. CVSS score: 7.8/10. Published 2025-03-07.
- How severe is CVE-2025-21842?
- High severity. CVSS v3 base score is 7.8 out of 10.
- Is CVE-2025-21842 known to be exploited?
- 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.