What is CVE-2025-21987?

CVE-2025-21987 is a medium-severity vulnerability in Linux, classified under Use of Uninitialized Resource. CVSS score: 5.5/10. Published 2025-04-02.

How severe is CVE-2025-21987?

Medium severity. CVSS v3 base score is 5.5 out of 10.

Is CVE-2025-21987 known to be exploited?

1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.

Vulnerability in Linux

CVE-2025-21987

In the Linux kernel, the following vulnerability has been resolved: drm/amdgpu: init return value in amdgpu_ttm_clear_buffer Otherwise an uninitialized value can be returned if amdgpu_res_cleared returns true for all regions. Possibly closes: https://gitlab.freedesktop.org/drm/amd/-/issues/3812 (cherry picked from commit 7c62aacc3b452f73a1284198c81551035fac6d71)

EPSS: 0.002 (7.1th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 5.5 (Medium). Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H.

Affected products

Linux — versions a68c7eaa7a8ffdec9287ba1561a668d674c20a13, 6.10, 0
Linux Linux_kernel — versions 6.14

Weakness classification (CWE)

CWE-908 — Use of Uninitialized Resource

Public proof-of-concept exploits

fkie-cad/nvd-json-data-feeds

References

416baaa9-dc9f-4396-8d5f-8c081fb06d67 (Patch)
416baaa9-dc9f-4396-8d5f-8c081fb06d67 (Patch)
416baaa9-dc9f-4396-8d5f-8c081fb06d67 (Patch)

Frequently asked questions

What is CVE-2025-21987?: CVE-2025-21987 is a medium-severity vulnerability in Linux, classified under Use of Uninitialized Resource. CVSS score: 5.5/10. Published 2025-04-02.
How severe is CVE-2025-21987?: Medium severity. CVSS v3 base score is 5.5 out of 10.
Is CVE-2025-21987 known to be exploited?: 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.