CVE-2026-43243 drm/amd/display: Add signal type check for dcn401 get_phyd32clk_src

What is CVE-2026-43243?

CVE-2026-43243 is a medium-severity vulnerability in Linux kernel, published on 6 May 2026. 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 signal type check for dcn401 get_phyd32clk_src

Trying to access link enc on a dpia link will cause a crash otherwise

Which versions are affected by CVE-2026-43243?

It affects 1 product.

Products include Linux kernel.

How do I fix CVE-2026-43243?

Apply the vendor's patch.

Is CVE-2026-43243 being exploited?

There is no known exploitation of CVE-2026-43243 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-85875, BELL-CVE-2026-43243, DEBIAN-CVE-2026-43243, GHSA-wff9-vm6f-fgv2, ROOT-OS-DEBIAN-11-CVE-2026-43243, ROOT-OS-DEBIAN-12-CVE-2026-43243 and 3 more.