CVE-2024-35786: drm/nouveau: fix stale locked mutex in nouveau_gem_ioctl_pushbuf

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: 2024-05-17 · updated 2026-06-17
Weakness: CWE-667

Description

In the Linux kernel, the following vulnerability has been resolved: drm/nouveau: fix stale locked mutex in nouveau_gem_ioctl_pushbuf If VM_BIND is enabled on the client the legacy submission ioctl can't be used, however if a client tries to do so regardless it will return an error. In this case the clients mutex remained unlocked leading to a deadlock inside nouveau_drm_postclose or any other nouveau ioctl call.

Affected products

Linux kernel: from 6.6 before 6.6.24; from 6.7 before 6.7.12; 6.8-rc1, 6.8-rc2, 6.8-rc3, 6.8-rc4, 6.8-rc5, 6.8-rc6 — fixed in 6.6.24, 6.7.12

How to fix

Upgrade to a fixed version: Linux kernel 6.6.24, 6.7.12. Check the vendor advisory for mitigations.

References

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