#VU124671 Memory corruption in Linux kernel - CVE-2026-23400
Published: March 30, 2026
Vulnerability identifier: #VU124671
Vulnerability risk: Low
CVSSv4.0: 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-2026-23400
CWE-ID: CWE-119
Exploitation vector: Local access
Exploit availability:
No public exploit available
Vulnerable software:
Linux kernel
Linux kernel
Software vendor:
Linux Foundation
Linux Foundation
Description
The vulnerability allows a local user to cause a denial of service.
The vulnerability exists due to improper locking mechanism in the rust_binder component when handling BC_DEAD_BINDER_DONE commands. A local user can send a specially crafted command sequence involving BC_CLEAR_DEATH_NOTIFICATION and BC_DEAD_BINDER_DONE to cause a deadlock in the kernel, resulting in a denial of service.
The issue arises when set_notification_done() is called without releasing the proc lock, leading to a potential deadlock if the current thread is not a looper, as the fallback path attempts to reacquire the proc lock.
Remediation
Install security update from vendor's repository.