Use-after-free in Linux kernel - CVE-2026-80750
Published: September 4, 2026
Vulnerability identifier: #VU146914
CSH Severity: Low
CVSS v4: 4.8 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N]
CVE-ID: CVE-2026-80750
CWE-ID: CWE-416
Exploitation vector: Local access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a local user to dereference freed memory.
The vulnerability exists due to use-after-free in scpsys_get_bus_protection_legacy() in the MediaTek power-domain driver when handling failed infracfg or SMI regmap lookups. A local user can trigger an error path that formats a device-tree node after its final reference has been dropped to dereference freed memory.
Affected software
Linux kernel
How to mitigate CVE-2026-80750
Install security update from vendor's repository.
Linux kernel - update to 7.0 rc3