Cloud Vulnerability DB
A community-led vulnerabilities database
Vulnerability DatabaseCVE-2025-39675
CVE-2025-39675:
Linux Kernel vulnerability analysis and mitigation
Overview
CVE-2025-39675 is a vulnerability discovered in the Linux kernel's AMD display driver component, specifically in the modhdcphdcp1createsession() function. The vulnerability was disclosed on September 5, 2025, and involves a null pointer dereference issue in the AMD display driver (NVD).
Technical details
The vulnerability occurs when the modhdcphdcp1createsession() function calls getfirstactive_display() without checking its return value. If the display list is empty, the function returns a null pointer, leading to a null pointer dereference. The issue has been assigned a CVSS v3.1 base score of 5.5, indicating moderate severity (RedHat).
Impact
The vulnerability can lead to a system crash due to null pointer dereference when the display list is empty, potentially causing denial of service conditions in affected systems (NVD, RedHat).
Mitigation and workarounds
A fix has been implemented by adding a null pointer check for getfirstactivedisplay() and returning MODHDCPSTATUSDISPLAYNOTFOUND if the function returns null. This solution is similar to a previous fix implemented in commit c3e9826a2202. The patch has been cherry-picked from commit 5e43eb3cd731649c4f8b9134f857be62a416c893 (NVD).
Additional resources
Source: This report was generated using AI
Related Linux Kernel vulnerabilities:
Free Vulnerability Assessment
Benchmark your Cloud Security Posture
Evaluate your cloud security practices across 9 security domains to benchmark your risk level and identify gaps in your defenses.
Additional Wiz resources
Get a personalized demo
Ready to see Wiz in action?
"Best User Experience I have ever seen, provides full visibility to cloud workloads."
David EstlickCISO
"Wiz provides a single pane of glass to see what is going on in our cloud environments."
Adam FletcherChief Security Officer
"We know that if Wiz identifies something as critical, it actually is."
Greg PoniatowskiHead of Threat and Vulnerability Management