CVE-2025-38674

In the Linux kernel, the following vulnerability has been resolved: Revert "drm/prime: Use dma_buf from GEM object instance" This reverts commit f83a9b8c7fd0557b0c50784bfdc1bbe9140c9bf8. 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

The following products are affected by CVE-2025-38674 vulnerability.

Here, you will find a curated list of external links that provide in-depth information to CVE-2025-38674.

URL	Resource
https://git.kernel.org/stable/c/5f05d83ce689a8930a70dfa73f879604aef8cc03
https://git.kernel.org/stable/c/fb4ef4a52b79a22ad382bfe77332642d02aef773
https://lore.kernel.org/linux-cve-announce/2025082202-CVE-2025-38674-58f1@gregkh/T
https://nvd.nist.gov/vuln/detail/CVE-2025-38674
https://www.cve.org/CVERecord?id=CVE-2025-38674