CVE-2026-80677
Linux · Kernel
A race condition in the Linux kernel driver core allows for potential memory corruption or privilege escalation due to improper handling of the dev->driver pointer during concurrent unbind operations.
Executive summary
A race condition vulnerability in the Linux kernel driver core could allow a local attacker with low privileges to achieve full system compromise.
Vulnerability
The vulnerability exists in the dev_has_sync_state function, which performs an unsafe double read of the dev->driver pointer without proper locking. This allows a concurrent unbind operation to clear the driver pointer, potentially leading to a use-after-free or other memory corruption issues when triggered by a local attacker with low privileges.
Business impact
Successful exploitation of this flaw allows a local, low-privileged attacker to compromise the integrity, confidentiality, and availability of the host system. Given the CVSS score of 7.8, this represents a significant risk to server stability and data security, particularly in environments hosting multi-tenant workloads or shared infrastructure.
Remediation
Immediate Action: Update the Linux kernel to version 5.10.261, 5.15.212, 6.1.178, 6.6.145, or a later stable release provided by your distribution vendor.
Proactive Monitoring: Monitor system logs for kernel panics or unexpected process crashes that may indicate exploitation attempts targeting kernel-level memory corruption.
Compensating Controls: Restrict access to the system to authorized users only, and implement kernel hardening features such as KSPP (Kernel Self Protection Project) settings to mitigate the impact of memory corruption exploits.
Exploitation status
Public Exploit Available: Unknown
Analyst recommendation
The vulnerability presents a high risk to system integrity and necessitates prompt attention. Security teams should prioritize patching the Linux kernel across all affected production environments to eliminate the potential for local privilege escalation.