CVE-2025-39675
Unknown Unknown - Not Provided
BaseFortify

Publication date: 2025-09-05

Last updated on: 2025-11-03

Assigner: kernel.org

Description
In the Linux kernel, the following vulnerability has been resolved: drm/amd/display: Add null pointer check in mod_hdcp_hdcp1_create_session() The function mod_hdcp_hdcp1_create_session() 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. Add a null pointer check for get_first_active_display() and return MOD_HDCP_STATUS_DISPLAY_NOT_FOUND if the function return null. This is similar to the commit c3e9826a2202 ("drm/amd/display: Add null pointer check for get_first_active_display()"). (cherry picked from commit 5e43eb3cd731649c4f8b9134f857be62a416c893)
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Meta Information
Published
2025-09-05
Last Modified
2025-11-03
Generated
2026-06-16
AI Q&A
2025-09-05
EPSS Evaluated
2026-06-14
NVD
CVE-2025-39675
Affected Vendors & Products
Showing 1 associated CPE
Vendor Product Version / Range
linux linux_kernel 6.1.153
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Exploitability
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CWE ID Description
CWE-UNKNOWN
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Executive Summary

This vulnerability occurs in the Linux kernel's drm/amd/display component where the function mod_hdcp_hdcp1_create_session() calls get_first_active_display() without checking if the returned pointer is null. If the display list is empty, get_first_active_display() returns a null pointer, leading to a null pointer dereference which can cause a system crash or instability. The fix adds a null pointer check and returns an error status if no active display is found.

Impact Analysis

The vulnerability can cause a null pointer dereference in the Linux kernel, potentially leading to system crashes or instability when the display list is empty. This could disrupt normal system operations or cause denial of service conditions.

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