CVE-2024-35950: drm/client: Fully protect modes[] with dev->mode_config.mutex

Severity: medium (CVSS 5.5 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.3% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2024-05-20 · updated 2026-10-15

Description

In the Linux kernel, the following vulnerability has been resolved: drm/client: Fully protect modes[] with dev->mode_config.mutex The modes[] array contains pointers to modes on the connectors' mode lists, which are protected by dev->mode_config.mutex. Thus we need to extend modes[] the same protection or by the time we use it the elements may already be pointing to freed/reused memory.

Affected products

Debian Linux: 10.0
Linux kernel: before 5.4.275; from 5.5 before 5.10.216; from 5.11 before 5.15.156; from 5.16 before 6.1.87; from 6.2 before 6.6.28; from 6.7 before 6.8.7 — fixed in 5.10.216, 5.15.156, 5.4.275, 6.1.87, 6.6.28, 6.8.7

How to fix

Upgrade to a fixed version: Linux kernel 5.10.216, 5.15.156, 5.4.275, 6.1.87. Check the vendor advisory for mitigations.

References

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