What’s Vulnerable › Vulnerabilities

CVE-2024-56775: drm/amd/display: Fix handling of plane refcount

• Severity: high (CVSS 7.8 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: 2025-01-08 · updated 2026-06-17
• Weakness: CWE-401

Description

In the Linux kernel, the following vulnerability has been resolved: drm/amd/display: Fix handling of plane refcount [Why] The mechanism to backup and restore plane states doesn't maintain refcount, which can cause issues if the refcount of the plane changes in between backup and restore operations, such as memory leaks if the refcount was supposed to go down, or double frees / invalid memory accesses if the refcount was supposed to go up. [How] Cache and re-apply current refcount when restoring plane states.

Affected products

• Linux kernel: before 6.12.4 — fixed in 6.12.4

How to fix

Upgrade to a fixed version: Linux kernel 6.12.4. Check the vendor advisory for mitigations.

References

• https://git.kernel.org/stable/c/27227a234c1487cb7a684615f0749c455218833a
• https://git.kernel.org/stable/c/8cb2f6793845f135b28361ba8e96901cae3e5790

Get alerted when CVE-2024-56775 or the next vulnerability affects your stack