CVE-2024-49920 drm/amd/display: Check null pointers before multiple uses

What is CVE-2024-49920?

CVE-2024-49920 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 null pointers before multiple uses

[WHAT & HOW] Poniters, such as stream_enc and dc->bw_vbios, are null checked previously in the same function, so Coverity warns "implies that stream_enc and dc->bw_vbios might be null". They are used multiple times in the subsequent code and need to be checked.

This fixes 10 FORWARD_NULL issues reported by Coverity.

Weakness: CWE-476

Which versions are affected by CVE-2024-49920?

It affects 1 product.

Products include Linux kernel.

How do I fix CVE-2024-49920?

Apply the vendor's patch.

Is CVE-2024-49920 being exploited?

There is no known exploitation of CVE-2024-49920 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-51403, AZL-51563, BELL-CVE-2024-49920, DEBIAN-CVE-2024-49920, GHSA-858g-q943-3jmm, ROOT-OS-DEBIAN-11-CVE-2024-49920 and 3 more.