CVE-2023-52821 drm/panel: fix a possible null pointer dereference

What is CVE-2023-52821?

CVE-2023-52821 is a medium-severity vulnerability in Linux kernel, published on 21 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/panel: fix a possible null pointer dereference

In versatile_panel_get_modes(), the return value of drm_mode_duplicate() is assigned to mode, which will lead to a NULL pointer dereference on failure of drm_mode_duplicate(). Add a check to avoid npd.

Weakness: CWE-476

Which versions are affected by CVE-2023-52821?

It affects 1 product.

Products include Linux kernel.

How do I fix CVE-2023-52821?

Apply the vendor's patch.

Is CVE-2023-52821 being exploited?

There is no known exploitation of CVE-2023-52821 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 BELL-CVE-2023-52821, DEBIAN-CVE-2023-52821, GHSA-4hhf-xw7g-4fx9, UBUNTU-CVE-2023-52821.