CVE-2026-43400: drm/amdgpu: add upper bound check on user inputs in signal ioctl
Published May 8, 2026
·Updated
drm/amdgpu: add upper bound check on user inputs in signal ioctl
Affected Software
5 affected componentsFixes available
Linux Linux kernel (amdgpu)
Microsoft azl3 kernel 6.6.137.1-2
Linux Linux kernel>=6.16<6.18.19
Linux Linux kernel>=6.19<6.19.9
Linux Linux kernel=7.0-rc1
Remediation
Event History
May 8, 2026
CVE Published
via MITRE·02:21 PM
Data Sourced
via MITRE·02:21 PM
Description
Data Sourced
via NVD·03:16 PM
RemedyDescriptionSeverityAffected Software
May 9, 2026
Data Sourced
via Microsoft·08:03 AM
DescriptionSeverityWeaknessAffected Software
Updated
via Microsoft·08:03 AM
Description
Frequently Asked Questions
1
What is the severity of CVE-2026-43400?
CVE-2026-43400 has a medium severity rating of 5.5 according to the CVSS 3.1 scoring system.
2
How do I fix CVE-2026-43400?
To fix CVE-2026-43400, apply the security patch that addresses the upper bound check on user inputs in the signal ioctl.
3
What systems are affected by CVE-2026-43400?
CVE-2026-43400 affects the Linux kernel, specifically the amdgpu driver in certain Linux and Microsoft Azl3 kernel versions.
4
What are the risks associated with CVE-2026-43400?
The risks associated with CVE-2026-43400 include potential out-of-memory (OOM) conditions due to huge input values being processed.
5
When was CVE-2026-43400 published?
CVE-2026-43400 was published on May 8, 2026.