PT-2025-34435 · Linux+1 · Linux Kernel+1

CVE-2025-38674

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Published

2025-07-17

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Updated

2026-08-21

CVSS v4.0

5.7

Medium

VectorAV:L/AC:L/AT:P/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N
Name of the Vulnerable Software and Affected Versions: Linux kernel (affected versions not specified)
Description: A flaw exists in the Linux kernel related to a reversion of a previous commit (f83a9b8c7fd0557b0c50784bfdc1bbe9140c9bf8) concerning the handling of dma buf within drm gem object. The dma buf field becomes NULL when the final GEM handle is released, leading to a NULL-pointer dereference. Previous workarounds did not fully address the issue, particularly for buffer objects without an associated DRM framebuffer. The reversion restores the use of .import attach->dmabuf.
Recommendations: At the moment, there is no information about a newer version that contains a fix for this vulnerability.

Exploit

NULL Pointer Dereference

Improper Resource Release

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Weakness Enumeration

Related Identifiers

BDU:2026-01333
CVE-2025-38674

Affected Products

Astra Linux
Linux Kernel