Use-after-free in Linux kernel - CVE-2026-89504
Published: September 12, 2026
Vulnerability identifier: #VU149304
CSH Severity: Low
CVSS v4: 0 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:N/SC:N/SI:N/SA:N]
CVE-ID: CVE-2026-89504
CWE-ID: CWE-416
Exploitation vector: Local access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a local user to trigger use of a dangling device-tree node pointer.
The vulnerability exists due to improper reference counting in as3722_get_regulator_dt_data() when parsing regulator device-tree data. A local user can cause the dangling pointer to be used to trigger use of a dangling device-tree node pointer.
Affected software
Linux kernel
How to mitigate CVE-2026-89504
Install security update from vendor's repository.