CVE-2024-35950 drm/client: Fully protect modes[] with dev->mode_config.mutex

What is CVE-2024-35950?

CVE-2024-35950 is a high-severity use after free vulnerability in Debian Debian Linux, published on 20 May 2024. 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/client: Fully protect modes[] with dev->mode_config.mutex

The modes[] array contains pointers to modes on the connectors' mode lists, which are protected by dev->mode_config.mutex. Thus we need to extend modes[] the same protection or by the time we use it the elements may already be pointing to freed/reused memory.

Which versions are affected by CVE-2024-35950?

It affects 2 products.

Products include Debian Debian Linux, Linux kernel.

How do I fix CVE-2024-35950?

Apply the vendor's patch.

Upgrade to the fixed version. These bugs are found with fuzzing and sanitisers and avoided by memory-safe languages. More about Use after free.

Is CVE-2024-35950 being exploited?

There is no known exploitation of CVE-2024-35950 in the wild and no public exploit code.

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All Debian Debian Linux vulnerabilities

Sources

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

Also known as BELL-CVE-2024-35950, DEBIAN-CVE-2024-35950, GHSA-9554-3xmv-g6g7, UBUNTU-CVE-2024-35950.