CVE-2026-43400 Details
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)
A vulnerability in the Linux kernel's AMDGPU driver allows for out-of-memory (OOM) conditions due to insufficient input validation in the 'amdgpu_userq_signal_ioctl' function. This issue affects the Linux kernel stable tree. The vulnerability arises from the lack of proper checks on user-provided input values, which can lead to excessive memory consumption. The problem has been addressed by implementing a validation mechanism that compares these input values against a defined maximum handle limit, thereby preventing potential OOM situations.
Users can update to the latest version of the Linux kernel where this vulnerability has been patched. Instructions for downloading the updated kernel can be found on the official Linux kernel website.
Metrics
CVSS 4.0 Severity and Vector Strings:
No CVSS 4.0 data is available for this CVE.
CVSS 3.x Severity and Vector Strings:
No data available for CVSS Version 2.0 on this CVE.
No SSVC data is available for this CVE.
References to Advisories, Solutions, and Tools
By selecting these links, you will be leaving this site. These are references gathered from the official CVE record and are not endorsed by Volerion.
| URL | Source(s) | Tag(s) |
|---|---|---|
| https://git.kernel.org/stable/c/46630d966b99b0fc6cb01fef4110587f3375a0c0 | kernel.org | Patch |
| https://git.kernel.org/stable/c/6fff5204d8aa26b1be50b6427f833bd3e8899c4f | kernel.org | Patch |
| https://git.kernel.org/stable/c/ea78f8c68f4f6211c557df49174c54d167821962 | kernel.org | Patch |
Weakness Enumeration
| CWE-ID | CWE Name | Source |
|---|---|---|
| NVD-CWE-noinfo | Insufficient Information to Classify Weakness | [email protected] |
Affected Products
| Product | Versions |
|---|---|
| linux linux kernel | >= 6.16, < 6.18.19 >= 6.19, < 6.19.9 7.0 rc1 |
CPE
Remediation
| |
Change History
3 change records found show changes
| Date | Action | Recorded By |
|---|---|---|
| Jun 17, 2026 | CVE Modified | kernel.org |
| May 21, 2026 | Initial Analysis | [email protected] |
| May 8, 2026 | New CVE Received | kernel.org |