CVE-2026-43370 Details
Description
In the Linux kernel, the following vulnerability has been resolved: drm/amdgpu: Fix use-after-free race in VM acquire Replace non-atomic vm->process_info assignment with cmpxchg() to prevent race when parent/child processes sharing a drm_file both try to acquire the same VM after fork(). (cherry picked from commit c7c573275ec20db05be769288a3e3bb2250ec618)
A use-after-free vulnerability has been addressed in the Linux kernel's AMD GPU Direct Rendering Manager (DRM) component. This issue arose in the virtual memory (VM) management system, specifically within the AMDGPU driver. The vulnerability was caused by a race condition where parent and child processes, sharing the same DRM file, could both attempt to acquire the same VM after a fork, leading to a use-after-free scenario. The non-atomic assignment of process information in the VM management code has been replaced with an atomic compare-and-swap operation to prevent this race condition.
Users can upgrade to the latest version of the Linux kernel where this vulnerability has been fixed. Instructions for downloading the patched version can be found in the Linux kernel documentation.
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
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| URL | Source(s) | Tag(s) |
|---|---|---|
| https://git.kernel.org/stable/c/2c1030f2e84885cc58bffef6af67d5b9d2e7098f | kernel.org | Patch |
| https://git.kernel.org/stable/c/46d309996bd9251792d7dafdbaf615cf202b4447 | kernel.org | Patch |
| https://git.kernel.org/stable/c/7885eb335d8f9e9942925d57e300a85e3f82ded4 | kernel.org | Patch |
| https://git.kernel.org/stable/c/904025fa8bba1d028adade33346372b4ac1a9249 | kernel.org | Patch |
| https://git.kernel.org/stable/c/94b7782d0c8024f5b88454241c8d4777076c3786 | kernel.org | Patch |
| https://git.kernel.org/stable/c/ae87aea330c24f462fc7058ed543ba8bc6798447 | kernel.org | Patch |
| https://git.kernel.org/stable/c/c658c1c85ec235b7ecfbf8dbfee385b1332088f4 | kernel.org | Patch |
| https://git.kernel.org/stable/c/e61e355cbe49e585097eee28c15b862bfb1c0668 | kernel.org | Patch |
Weakness Enumeration
| CWE-ID | CWE Name | Source |
|---|---|---|
| CWE-416 | Use After Free | [email protected] |
Affected Products
| Product | Versions |
|---|---|
| linux linux kernel | >= 4.17, < 5.10.253 >= 5.11, < 5.15.203 >= 5.16, < 6.1.167 >= 6.2, < 6.6.130 >= 6.7, < 6.12.78 >= 6.13, < 6.18.19 >= 6.19, < 6.19.9 7.0 rc1 7.0 rc2 |
CPE
Remediation
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Change History
4 change records found show changes
| Date | Action | Recorded By |
|---|---|---|
| Jun 17, 2026 | CVE Modified | kernel.org |
| May 15, 2026 | Initial Analysis | [email protected] |
| May 11, 2026 | CVE Modified | kernel.org |
| May 8, 2026 | New CVE Received | kernel.org |