Race condition in Linux kernel - CVE-2026-43318
Published: May 9, 2026
Vulnerability identifier: #VU130862
CSH Severity: Low
CVSS v4.0: CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear
CVE-ID: CVE-2026-43318
CWE-ID: CWE-362
Exploitation vector: Local access
Exploit availability:
No public exploit available
Vendor: Linux Foundation
Affected software:
Linux kernel
Linux kernel
Detailed vulnerability description
The vulnerability allows a local user to cause a denial of service.
The vulnerability exists due to improper synchronization in amdgpu_dma_buf_move_notify when handling dma-buf move notifications for shared buffer objects. A local user can trigger a buffer move while another GPU job is still running to cause a denial of service.
The issue can occur in multi-GPU environments using shared buffer objects where a page table update happens before the originating blit job has completed, leading to a likely page fault.
How to mitigate CVE-2026-43318
Install security update from vendor's repository.