What’s Vulnerable › Vulnerabilities

CVE-2023-53248: drm/amdgpu: install stub fence into potential unused fence pointers

• Severity: medium (CVSS 5.5 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.1% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2025-09-15 · updated 2026-06-17
• Weakness: CWE-476

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 products

• Linux kernel: from 4.2 before 6.1.47; from 6.2 before 6.4.12 — fixed in 6.1.47, 6.4.12

How to fix

Upgrade to a fixed version: Linux kernel 6.1.47, 6.4.12. Check the vendor advisory for mitigations.

References

• https://git.kernel.org/stable/c/187916e6ed9d0c3b3abc27429f7a5f8c936bd1f0
• https://git.kernel.org/stable/c/78b25110eb8c6990f7f5096bc0136c12a2b4cc99
• https://git.kernel.org/stable/c/aa9e9ba5748c524eb0925a2ef6984b78793646d6

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