Improper access control in Linux kernel - CVE-2026-43498
Published: May 22, 2026
Vulnerability identifier: #VU132121
CSH Severity: Low
CVSS v4.0: CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:H/VA:N/SC:N/SI:N/SA:N/E:U/U:Clear
CVE-ID: CVE-2026-43498
CWE-ID: CWE-284
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 data corruption.
The vulnerability exists due to improper access control in GEM buffer export handling when re-exporting imported GEM objects. A local user can re-export an imported GEM buffer to cause data corruption.
The issue can also lead to incorrect device access because buffer flag settings are lost during re-export.
How to mitigate CVE-2026-43498
Install security update from vendor's repository.