What’s Vulnerable › Vulnerabilities

CVE-2025-39707: drm/amdgpu: check if hubbub is NULL in debugfs/amdgpu_dm_capabilities

• 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: 2025-09-05 · updated 2026-10-19
• Weakness: CWE-476

Description

In the Linux kernel, the following vulnerability has been resolved: drm/amdgpu: check if hubbub is NULL in debugfs/amdgpu_dm_capabilities HUBBUB structure is not initialized on DCE hardware, so check if it is NULL to avoid null dereference while accessing amdgpu_dm_capabilities file in debugfs.

Affected products

• Linux kernel: from 4.15 before 6.12.44; from 6.13 before 6.16.4 — fixed in 6.12.44, 6.16.4

How to fix

Upgrade to a fixed version: Linux kernel 6.12.44, 6.16.4. Check the vendor advisory for mitigations.

References

• https://git.kernel.org/stable/c/83cfdc2b018cd9c0f927b781d4e07c0d4a911fac
• https://git.kernel.org/stable/c/98e92fceb9507901e3e8b550e93b843306abd354
• https://git.kernel.org/stable/c/b4a69f7f29c8a459ad6b4d8a8b72450f1d9fd288

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