In the Linux kernel, the following vulnerability has been resolved:
Revert "drm/gem-dma: Use dma_buf from GEM object instance"
This reverts commit e8afa1557f4f963c9a511bd2c6074a941c308685.
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
CVSS
No CVSS.
References
Configurations
No configuration.
History
22 Aug 2025, 16:15
| Type | Values Removed | Values Added |
|---|---|---|
| New CVE |
Information
Published : 2025-08-22 16:15
Updated : 2025-08-22 18:08
NVD link : CVE-2025-38672
Mitre link : CVE-2025-38672
CVE.ORG link : CVE-2025-38672
JSON object : View
Products Affected
No product.
CWE
No CWE.