CVE-2024-56369 drm/modes: Avoid divide by zero harder in drm_mode_vrefresh()

What is CVE-2024-56369?

CVE-2024-56369 is a medium-severity denial of service vulnerability in Linux kernel, published on 11 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/modes: Avoid divide by zero harder in drm_mode_vrefresh()

drm_mode_vrefresh() is trying to avoid divide by zero by checking whether htotal or vtotal are zero. But we may still end up with a div-by-zero of vtotal*htotal*...

Weakness: CWE-369

Which versions are affected by CVE-2024-56369?

It affects 1 product.

Products include Linux kernel.

How do I fix CVE-2024-56369?

Apply the vendor's patch.

Upgrade, then put limits on request size, rate and nesting depth so one client cannot exhaust the service. More about Denial of service.

Is CVE-2024-56369 being exploited?

There is no known exploitation of CVE-2024-56369 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-55703, AZL-55808, BELL-CVE-2024-56369, DEBIAN-CVE-2024-56369, GHSA-mg8f-gmvx-pvjj, ROOT-OS-DEBIAN-11-CVE-2024-56369 and 1 more.