Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved: drm/amdgpu: add upper bound check on user inputs in signal ioctl Huge input values in amdgpu_userq_signal_ioctl can lead to a OOM and could be exploited. So check these input value against AMDGPU_USERQ_MAX_HANDLES which is big enough value for genuine use cases and could potentially avoid OOM. (cherry picked from commit be267e15f99bc97cbe202cd556717797cdcf79a5)
CVSS Score
MEDIUM
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Linux | Linux Kernel | >= 6.16, < 6.18.19 |
References
- https://git.kernel.org/stable/c/46630d966b99b0fc6cb01fef4110587f3375a0c0Patch
- https://git.kernel.org/stable/c/6fff5204d8aa26b1be50b6427f833bd3e8899c4fPatch
- https://git.kernel.org/stable/c/ea78f8c68f4f6211c557df49174c54d167821962Patch
FAQ
What is CVE-2026-43400?
CVE-2026-43400 is a vulnerability with a CVSS score of 5.5 (MEDIUM). In the Linux kernel, the following vulnerability has been resolved: drm/amdgpu: add upper bound check on user inputs in signal ioctl Huge input values in amdgpu_userq_signal_ioctl can lead to a OOM ...
How severe is CVE-2026-43400?
CVE-2026-43400 has been rated MEDIUM with a CVSS base score of 5.5/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2026-43400?
Check the references section above for vendor advisories and patch information. Affected products include: Linux Linux Kernel.