Improper locking in Linux kernel - CVE-2025-38449
Published: July 27, 2025
Vulnerability identifier: #VU113279
CSH Severity: Low
CVSS v4.0: CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear
CVE-ID: CVE-2025-38449
CWE-ID: CWE-667
Exploitation vector: Local access
Exploit availability:
No public exploit available
Vendor: Linux Foundation
Affected software:
Linux kernel
Linux kernel
Detailed vulnerability description
The vulnerability allows a local user to perform a denial of service (DoS) attack.
The vulnerability exists due to improper locking within the drm_gem_fb_destroy() and drm_gem_fb_init_with_funcs() functions in drivers/gpu/drm/drm_gem_framebuffer_helper.c, within the drm_gem_private_object_fini(), drm_gem_object_exported_dma_buf_free(), drm_gem_object_handle_put_unlocked() and drm_gem_handle_create_tail() functions in drivers/gpu/drm/drm_gem.c. A local user can perform a denial of service (DoS) attack.
How to mitigate CVE-2025-38449
Install update from vendor's repository.