What’s Vulnerable › Vulnerabilities

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

• Severity: medium (CVSS 5.5 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.1% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2026-05-06 · updated 2026-06-17

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

Affected products

• Linux kernel: from 6.11 before 6.12.75; from 6.13 before 6.18.16; from 6.19 before 6.19.6 — fixed in 6.12.75, 6.18.16, 6.19.6

How to fix

Upgrade to a fixed version: Linux kernel 6.12.75, 6.18.16, 6.19.6. Check the vendor advisory for mitigations.

References

• https://git.kernel.org/stable/c/23e7150afc70da615857f9f07b494ec58540f096
• https://git.kernel.org/stable/c/486b2909ac284185900c06f05ffc6eca895f38b8
• https://git.kernel.org/stable/c/c979d8db7b0f293111f2e83795ea353c8ed75de9
• https://git.kernel.org/stable/c/e332112255afbce02db67760f5743a1b13aa8541

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