CVE-2023-53248

MEDIUM

Linux Kernel - NULL Pointer Dereference in DRM AMDGPU Fence Handling

Title source: llm

Description

In the Linux kernel, the following vulnerability has been resolved: drm/amdgpu: install stub fence into potential unused fence pointers When using cpu to update page tables, vm update fences are unused. Install stub fence into these fence pointers instead of NULL to avoid NULL dereference when calling dma_fence_wait() on them.

References (3)

Core 3

Core References

Patch

https://git.kernel.org/stable/c/78b25110eb8c6990f7f5096bc0136c12a2b4cc99

Patch

https://git.kernel.org/stable/c/aa9e9ba5748c524eb0925a2ef6984b78793646d6

Patch

https://git.kernel.org/stable/c/187916e6ed9d0c3b3abc27429f7a5f8c936bd1f0

Scores

CVSS v3 5.5

EPSS 0.0013

EPSS Percentile 3.2%

Attack Vector LOCAL

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

CISA SSVC

Vulnrichment

Exploitation none

Automatable no

Technical Impact partial

Details

CWE

CWE-476

Status published

Products (9)

Linux/Linux < 4.2

Linux/Linux 4.2

Linux/Linux 6.1.47 - 6.1.*

Linux/Linux 6.4.12 - 6.4.*

Linux/Linux 6.5

Linux/Linux d38ceaf99ed015f2a0b9af3499791bd3a3daae21 - 187916e6ed9d0c3b3abc27429f7a5f8c936bd1f0

Linux/Linux d38ceaf99ed015f2a0b9af3499791bd3a3daae21 - 78b25110eb8c6990f7f5096bc0136c12a2b4cc99

Linux/Linux d38ceaf99ed015f2a0b9af3499791bd3a3daae21 - aa9e9ba5748c524eb0925a2ef6984b78793646d6

linux/linux_kernel 4.2 - 6.1.47

Published Sep 15, 2025

Tracked Since Feb 18, 2026