CVE-2024-50201: drm/radeon: Fix encoder->possible_clones

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: 2024-11-08 · updated 2026-06-17

Description

In the Linux kernel, the following vulnerability has been resolved: drm/radeon: Fix encoder->possible_clones Include the encoder itself in its possible_clones bitmask. In the past nothing validated that drivers were populating possible_clones correctly, but that changed in commit 74d2aacbe840 ("drm: Validate encoder->possible_clones"). Looks like radeon never got the memo and is still not following the rules 100% correctly. This results in some warnings during driver initialization: Bogus possible_clones: [ENCODER:46:TV-46] possible_clones=0x4 (full encoder mask=0x7) WARNING: CPU: 0 PID: 170 at drivers/gpu/drm/drm_mode_config.c:615 drm_mode_config_validate+0x113/0x39c ... (cherry picked from commit 3b6e7d40649c0d75572039aff9d0911864c689db)

Affected products

Linux kernel: from 5.8 before 5.10.228; from 5.11 before 5.15.169; from 5.16 before 6.1.114; from 6.2 before 6.6.58; from 6.7 before 6.11.5; 6.12-rc1, 6.12-rc2, 6.12-rc3 — fixed in 5.10.228, 5.15.169, 6.1.114, 6.11.5, 6.6.58

How to fix

Upgrade to a fixed version: Linux kernel 5.10.228, 5.15.169, 6.1.114, 6.11.5. Check the vendor advisory for mitigations.

References

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