What’s Vulnerable › Vulnerabilities
CVE-2025-38362: drm/amd/display: Add null pointer check for get_first_active_display()
- 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: 2025-07-25 · updated 2026-06-17
- Weakness: CWE-476
Description
In the Linux kernel, the following vulnerability has been resolved: drm/amd/display: Add null pointer check for get_first_active_display() The function mod_hdcp_hdcp1_enable_encryption() calls the function get_first_active_display(), but does not check its return value. The return value is a null pointer if the display list is empty. This will lead to a null pointer dereference in mod_hdcp_hdcp2_enable_encryption(). Add a null pointer check for get_first_active_display() and return MOD_HDCP_STATUS_DISPLAY_NOT_FOUND if the function return null.
Affected products
- Debian Linux: 11.0
- Linux kernel: from 5.8 before 5.15.187; from 5.16 before 6.1.143; from 6.2 before 6.6.96; from 6.7 before 6.12.36; from 6.13 before 6.15.5 — fixed in 5.15.187, 6.1.143, 6.12.36, 6.15.5, 6.6.96
How to fix
Upgrade to a fixed version: Linux kernel 5.15.187, 6.1.143, 6.12.36, 6.15.5. Check the vendor advisory for mitigations.
References
- https://git.kernel.org/stable/c/1ebcdf38887949def1a553ff3e45c98ed95a3cd0
- https://git.kernel.org/stable/c/34d3e10ab905f06445f8dbd8a3d9697095e71bae
- https://git.kernel.org/stable/c/4ce9f2dc9ff7cc410e8c5d936ec551e26b9599a9
- https://git.kernel.org/stable/c/5148c7ea69e9c5bf2f05081190f45ba96d3d1e7a
- https://git.kernel.org/stable/c/b3005145eab98d36777660b8893466e4f630ae1c
- https://git.kernel.org/stable/c/c3e9826a22027a21d998d3e64882fa377b613006
- https://lists.debian.org/debian-lts-announce/2025/10/msg00008.html
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