CyberRota Analysis
AI-GeneratedThe vulnerability affects the Linux kernel's TIPC (Transparent Inter-Process Communication) subsystem, specifically in the handling of poll trace queue dumps. An unlocked call to the poll trace path can lead to a use-after-free condition, potentially allowing attackers to dereference stale memory, which may result in system instability or exploitation. Organizations using Linux systems with TIPC should prioritize addressing this vulnerability to mitigate risks associated with memory corruption and ensure system integrity.
Original NVD Description
In the Linux kernel, the following vulnerability has been resolved: tipc: avoid use-after-free in poll trace queue dumps TIPC socket tracepoints dump queue state through tipc_sk_dump(). Most queue-dump callsites already serialize that walk under the socket lock or sk->sk_lock.slock, but tipc_poll() calls trace_tipc_sk_poll(..., TIPC_DUMP_ALL, ...) without holding either lock. That lets the poll trace path reach tipc_list_dump() and backlog head/tail dumping while another context dequeues and frees an skb, leaving the trace helper dereferencing a stale queue entry. Stop the unlocked poll trace site from requesting queue dumps. Other queue dump trace callsites keep their existing output under the locking they already provide, while poll still emits the event itself without walking live queue members from an unlocked context.