CVE-2024-56778 drm/sti: avoid potential dereference of error pointers in sti_hqvdp_atomic_check

What is CVE-2024-56778?

CVE-2024-56778 is a medium-severity vulnerability in Linux kernel, published on 8 Jan 2025. It can only be exploited from the same machine or local network, with no action from the victim.

Official description

In the Linux kernel, the following vulnerability has been resolved:

drm/sti: avoid potential dereference of error pointers in sti_hqvdp_atomic_check

The return value of drm_atomic_get_crtc_state() needs to be checked. To avoid use of error pointer 'crtc_state' in case of the failure.

Weakness: CWE-754

Which versions are affected by CVE-2024-56778?

It affects 1 product.

Products include Linux kernel.

How do I fix CVE-2024-56778?

Apply the vendor's patch.

Is CVE-2024-56778 being exploited?

There is no known exploitation of CVE-2024-56778 in the wild and no public exploit code.

Other vulnerabilities in Linux kernel

• CVE-2026-53266 Linux Kernel Out-of-Bounds Write Exploited High 8.8
• CVE-2013-6282 Linux Kernel Improper Input Validation Exploited High 8.8
• CVE-2022-0185 Linux Kernel Heap-Based Buffer Overflow Exploited High 8.4
• CVE-2013-2094 Linux Kernel Privilege Escalation Exploited High 8.4
• CVE-2026-53362 Linux Kernel Unspecified Exploited High 7.8

All Linux kernel vulnerabilities

Sources

• CVE record
• NVD
• OSV
• GitHub advisory
• How this page is made

Also known as AZL-55346, AZL-55354, BELL-CVE-2024-56778, DEBIAN-CVE-2024-56778, GHSA-x9pj-5qm2-7p6v, ROOT-OS-DEBIAN-11-CVE-2024-56778 and 1 more.