What’s Vulnerable › Vulnerabilities

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

• 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: 2025-01-08 · updated 2026-06-17
• Weakness: CWE-754

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.

Affected products

• Linux kernel: from 4.6 before 5.15.174; from 5.16 before 6.1.120; from 6.2 before 6.6.64; from 6.7 before 6.12.4 — fixed in 5.15.174, 6.1.120, 6.12.4, 6.6.64

How to fix

Upgrade to a fixed version: Linux kernel 5.15.174, 6.1.120, 6.12.4, 6.6.64. Check the vendor advisory for mitigations.

References

• https://git.kernel.org/stable/c/31c857e7496d34e5a32a6f75bc024d0b06fd646a
• https://git.kernel.org/stable/c/6b0d0d6e9d3c26697230bf7dc9e6b52bdb24086f
• https://git.kernel.org/stable/c/82a5312f874fb18f045d9658e9bd290e3b0621c0
• https://git.kernel.org/stable/c/837eb99ad3340c7a9febf454f41c8e3edb68ac1e
• https://git.kernel.org/stable/c/c1ab40a1fdfee732c7e6ff2fb8253760293e47e8
• https://lists.debian.org/debian-lts-announce/2025/03/msg00001.html

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