What’s Vulnerable › Vulnerabilities

CVE-2024-40926: drm/nouveau: don't attempt to schedule hpd_work on headless cards

• Severity: medium (CVSS 5.5 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.2% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2024-07-12 · updated 2026-06-17
• Weakness: CWE-908

Description

In the Linux kernel, the following vulnerability has been resolved: drm/nouveau: don't attempt to schedule hpd_work on headless cards If the card doesn't have display hardware, hpd_work and hpd_lock are left uninitialized which causes BUG when attempting to schedule hpd_work on runtime PM resume. Fix it by adding headless flag to DRM and skip any hpd if it's set.

Affected products

• Linux kernel: from 6.7 before 6.9.6; 6.10-rc1, 6.10-rc2, 6.10-rc3 — fixed in 6.9.6

How to fix

Upgrade to a fixed version: Linux kernel 6.9.6. Check the vendor advisory for mitigations.

References

• https://git.kernel.org/stable/c/227349998e5740f14d531b0f0d704e66b1ed3c2f
• https://git.kernel.org/stable/c/b96a225377b6602299a03d2ce3c289b68cd41bb7
• https://git.kernel.org/stable/c/227349998e5740f14d531b0f0d704e66b1ed3c2f
• https://git.kernel.org/stable/c/b96a225377b6602299a03d2ce3c289b68cd41bb7

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