CVE-2026-43400: drm/amdgpu: add upper bound check on user inputs in signal ioctl
drm/amdgpu: add upper bound check on user inputs in signal ioctl
Affected Software
Remediation
Recommended actions to resolve this vulnerability, in priority order.
- Upgrade
Upgrade
linux/Kernelto a version that resolves this vulnerability.Fixed in 6.18.19 - Upgrade
Upgrade
linux/Kernelto a version that resolves this vulnerability.Fixed in 6.19.9 - Upgrade
Upgrade
debian/linuxto a version that resolves this vulnerability.Fixed in 6.19.10-1 - Upgrade
Upgrade
debian/linuxto a version that resolves this vulnerability.Fixed in 6.1.176-1Fixed in 6.1.190-1Fixed in 6.12.107-1Fixed in 6.12.116-1Fixed in 7.2.15-1Fixed in 7.3.4-1 - Upgrade
Upgrade
Linux kernel drm/amdgputo a version that resolves this vulnerability.Patch be267e15f99bc97cbe202cd556717797cdcf79a5
Event History
Frequently Asked Questions
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.
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.
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.
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.
When was CVE-2026-43400 published?
CVE-2026-43400 was published on May 8, 2026.