What’s Vulnerable › Vulnerabilities

CVE-2024-49914: drm/amd/display: Add null check for pipe_ctx->plane_state in dcn20_program_pipe

• 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: 2024-10-21 · updated 2026-10-30
• Weakness: CWE-476

Description

In the Linux kernel, the following vulnerability has been resolved: drm/amd/display: Add null check for pipe_ctx->plane_state in dcn20_program_pipe This commit addresses a null pointer dereference issue in the `dcn20_program_pipe` function. The issue could occur when `pipe_ctx->plane_state` is null. The fix adds a check to ensure `pipe_ctx->plane_state` is not null before accessing. This prevents a null pointer dereference. Reported by smatch: drivers/gpu/drm/amd/amdgpu/../display/dc/hwss/dcn20/dcn20_hwseq.c:1925 dcn20_program_pipe() error: we previously assumed 'pipe_ctx->plane_state' could be null (see line 1877)

Affected products

• Linux kernel: before 6.11.3 — fixed in 6.11.3
• Linux: 4.15 — fixed in 6.12

How to fix

Upgrade to a fixed version: Linux kernel 6.11.3; Linux 6.12. Check the vendor advisory for mitigations.

References

• https://git.kernel.org/stable/c/21c613e1c6ae45bb29ebc156d22060f034cc5665
• https://git.kernel.org/stable/c/65a6fee22d5cfa645cb05489892dc9cd3d142fc2
• https://git.kernel.org/stable/c/68f75e6f08aad66069a629db8d7840919156c761
• https://git.kernel.org/stable/c/8e4ed3cf1642df0c4456443d865cff61a9598aa8

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