CVE-2026-64023
7.8Linux · Kernel
A use-after-free vulnerability in the Linux kernel gpio aggregator allows a local authenticated attacker to achieve high privileges and impact confidentiality, integrity, and availability.
Executive summary
A use-after-free vulnerability in the Linux kernel gpio aggregator component allows local authenticated attackers to achieve severe system compromise.
Vulnerability
This issue is a use-after-free vulnerability stemming from incorrect error handling order in the gpio aggregator driver, requiring low local privileges to exploit.
Business impact
Successful exploitation of this kernel vulnerability can lead to complete system compromise, including unauthorized data access, system integrity violations, and unexpected reboots causing service downtime. The CVSS score of 7.8 reflects the high severity of potential local privilege escalation and system instability.
Remediation
Immediate Action: Update the Linux kernel to version 6.18.34, 7.0.11, or later stable releases containing the official fix.
Proactive Monitoring: Monitor system logs for kernel panics, segmentation faults, and suspicious local privilege escalation attempts.
Compensating Controls: Restrict local shell access and apply strict user authorization controls to minimize the attack surface for low-privileged users.
Exploitation status
Public Exploit Available: No
Analyst recommendation
Administrators must prioritize updating vulnerable Linux kernel environments to the patched versions as soon as possible. Applying the official kernel patches effectively eliminates the race condition and prevents potential use-after-free exploitation.