NULL pointer dereference in Linux kernel - CVE-2026-43410
Published: May 8, 2026
Vulnerability identifier: #VU130777
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-2026-43410
CWE-ID: CWE-476
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 a NULL pointer dereference in the stratix10-rsu driver when executing svc_normal_to_secure_thread() while RSU is disabled in firmware. A local user can trigger the vulnerable code path to cause a denial of service.
The issue occurs after asynchronous message setup fails and the channel is freed, but the thread is still registered and later accesses the invalid channel.
How to mitigate CVE-2026-43410
Install security update from vendor's repository.