In the Linux kernel, the following vulnerability has been resolved:
Revert "drm/gem-shmem: Use dma_buf from GEM object instance"
This reverts commit 1a148af06000e545e714fe3210af3d77ff903c11.
The dma_buf field in struct drm_gem_object is not stable over the
object instance's lifetime. The field becomes NULL when user space
releases the final GEM handle on the buffer object. This resulted
in a NULL-pointer deref.
Workarounds in commit 5307dce878d4 ("drm/gem: Acquire references on
GEM handles for framebuffers") and commit f6bfc9afc751 ("drm/framebuffer:
Acquire internal references on GEM handles") only solved the problem
partially. They especially don't work for buffer objects without a DRM
framebuffer associated.
Hence, this revert to going back to using .import_attach->dmabuf.
v3:
- cc stable
References
Configurations
Configuration 1 (hide)
|
History
25 Nov 2025, 22:14
| Type | Values Removed | Values Added |
|---|---|---|
| CWE | CWE-476 | |
| References | () https://git.kernel.org/stable/c/291a77604858a8b47cf6640a12b76e97f99e00ed - Patch | |
| References | () https://git.kernel.org/stable/c/6d496e9569983a0d7a05be6661126d0702cf94f7 - Patch | |
| First Time |
Linux linux Kernel
Linux |
|
| CVSS |
v2 : v3 : |
v2 : unknown
v3 : 5.5 |
| CPE | cpe:2.3:o:linux:linux_kernel:6.16:rc6:*:*:*:*:*:* cpe:2.3:o:linux:linux_kernel:6.16:rc5:*:*:*:*:*:* cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* cpe:2.3:o:linux:linux_kernel:6.16:rc7:*:*:*:*:*:* cpe:2.3:o:linux:linux_kernel:6.16:rc2:*:*:*:*:*:* cpe:2.3:o:linux:linux_kernel:6.16:rc1:*:*:*:*:*:* cpe:2.3:o:linux:linux_kernel:6.16:rc3:*:*:*:*:*:* cpe:2.3:o:linux:linux_kernel:6.16:rc4:*:*:*:*:*:* |
Information
Published : 2025-08-22 16:15
Updated : 2025-11-25 22:14
NVD link : CVE-2025-38669
Mitre link : CVE-2025-38669
CVE.ORG link : CVE-2025-38669
JSON object : View
Products Affected
linux
- linux_kernel
CWE
CWE-476
NULL Pointer Dereference