CVE-2024-49909 drm/amd/display: Add NULL check for function pointer in dcn32_set_output_transfer_func

What is CVE-2024-49909?

CVE-2024-49909 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: Add NULL check for function pointer in dcn32_set_output_transfer_func

This commit adds a null check for the set_output_gamma function pointer in the dcn32_set_output_transfer_func function. Previously, set_output_gamma was being checked for null, but then it was being dereferenced without any null check. This could lead to a null pointer dereference if set_output_gamma is null.

To fix this, we now ensure that set_output_gamma is not null before dereferencing it. We do this by adding a null check for set_output_gamma before the call to set_output_gamma.

Weakness: CWE-476

Which versions are affected by CVE-2024-49909?

It affects 1 product.

Products include Linux kernel.

How do I fix CVE-2024-49909?

Apply the vendor's patch.

Is CVE-2024-49909 being exploited?

There is no known exploitation of CVE-2024-49909 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-51034, AZL-51071, BELL-CVE-2024-49909, DEBIAN-CVE-2024-49909, GHSA-2m92-hrph-h3f7, ROOT-OS-UBUNTU-2204-CVE-2024-49909 and 1 more.