Vulnerabilities Identified in ksmbd Component of Linux Kernel
/ 1 min read
🦠 Vulnerabilities Discovered in Linux Kernel’s ksmbd Component. Doyensec’s research on the SMB3 Kernel Server (ksmbd) has revealed multiple security vulnerabilities, including a race condition leading to a Use-After-Free (UAF) issue and improper session management. These vulnerabilities can be exploited without authentication during the session setup phase, posing significant risks. The team utilized fuzzing techniques, particularly with syzkaller, to identify these flaws, although some issues required manual analysis to reproduce. The vulnerabilities stem from improper synchronization and memory management, which could lead to kernel panics and system restarts under certain conditions. The findings highlight the need for further improvements in fuzzing methodologies to uncover additional bugs in complex locking mechanisms.
