CVE-2024-49896 drm/amd/display: Check stream before comparing them

Medium 5.5 Published Updated

A null pointer dereference in the AMD display driver can cause a system crash, requiring a kernel patch to prevent denial of service.

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-2024-49896?

CVE-2024-49896 is a medium-severity vulnerability in Linux kernel, published on 21 Oct 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/amd/display: Check stream before comparing them

[WHAT & HOW] amdgpu_dm can pass a null stream to dc_is_stream_unchanged. It is necessary to check for null before dereferencing them.

This fixes 1 FORWARD_NULL issue reported by Coverity.

Weakness: CWE-476

Which versions are affected by CVE-2024-49896?

It affects 1 product.

Products include Linux kernel.

How do I fix CVE-2024-49896?

Apply the vendor's patch.

Is CVE-2024-49896 being exploited?

There is no known exploitation of CVE-2024-49896 in the wild and no public exploit code.

All Linux kernel vulnerabilities

Sources

Also known as AZL-51085, AZL-51096, BELL-CVE-2024-49896, DEBIAN-CVE-2024-49896, GHSA-qgr6-hgc6-qm52, UBUNTU-CVE-2024-49896.

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