CVE-2024-50287 media: v4l2-tpg: prevent the risk of a division by zero

Medium 5.5 Published Updated

A division by zero in the Linux kernel's V4L2 test pattern generator can cause a system crash, requiring a kernel patch.

Exploited in the wild
Not known
Login needed
Any signed-in user
Attackable
Local or same network only
Victim action needed
Not needed
Fix
Available

What is CVE-2024-50287?

CVE-2024-50287 is a medium-severity denial of service vulnerability in Linux kernel, published on 19 Nov 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:

media: v4l2-tpg: prevent the risk of a division by zero

As reported by Coverity, the logic at tpg_precalculate_line() blindly rescales the buffer even when scaled_witdh is equal to zero. If this ever happens, this will cause a division by zero.

Instead, add a WARN_ON_ONCE() to trigger such cases and return without doing any precalculation.

Weakness: CWE-369

Which versions are affected by CVE-2024-50287?

It affects 1 product.

Products include Linux kernel.

How do I fix CVE-2024-50287?

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-2024-50287 being exploited?

There is no known exploitation of CVE-2024-50287 in the wild and no public exploit code.

All Linux kernel vulnerabilities

Sources

Also known as AZL-53489, AZL-53766, BELL-CVE-2024-50287, DEBIAN-CVE-2024-50287, GHSA-f8fj-469m-8mrj, UBUNTU-CVE-2024-50287.

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