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CVE-2023-53248

drm/amdgpu: install stub fence into potential unused fence pointers

MEDIUM
5.5
CVSS Score
Published: September 15, 2025 at 02:46 PM UTC
Updated: June 17, 2026 at 06:44 AM UTC
1 product affected across 1 vendorLinux Kernel

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Severity
MEDIUM5.5
Exploit prediction
EPSS 0.1%
SSVC
No known exploit

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.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

Linux Kernel· Linux
95%
4.2 ≤ v < 6.1.474.2 ≤ v < 6.4.124.2 ≤ v < 6.56.2 ≤ v < 6.4.124.2d38ceaf99ed015f2a0b9af3499791bd3a3daae21
Vendor states this is fixed in 187916e6ed9d0c3b3abc27429f7a5f8c936bd1f0 (fixed)
Vendor states this is fixed in 78b25110eb8c6990f7f5096bc0136c12a2b4cc99 (fixed)
Vendor states this is fixed in aa9e9ba5748c524eb0925a2ef6984b78793646d6 (fixed)
Vendor states this is fixed in 4.2 (unaffected)
Vendor states this is fixed in 6.1.47 (unaffected)
Vendor states this is fixed in 6.4.12 (unaffected)
Vendor states this is fixed in 6.5 (unaffected)

References (3)

Patch
Source: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
https://git.kernel.org/stable/c/187916e6ed9d0c3b3abc27429f7a5f8c936bd1f0
Patch
Source: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
https://git.kernel.org/stable/c/78b25110eb8c6990f7f5096bc0136c12a2b4cc99
Patch
Source: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
https://git.kernel.org/stable/c/aa9e9ba5748c524eb0925a2ef6984b78793646d6

SSVC — Action Prioritization

SSVCNo known exploitNot automatablePartial impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

5.5MEDIUMCISA-ADP
Attack Vector
LOCAL
Complexity
LOW
Privileges
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
NONE
Integrity
NONE
Availability
HIGH
Vector?

Quick Info

StatusMODIFIED
CWE
CWE-476

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