CyberRota Analysis
AI-GeneratedA vulnerability in the Linux kernel affects the handling of qdiscs (queueing disciplines) during their initialization, which can lead to a race condition where a qdisc is freed while still being accessed by lockless readers. This flaw could potentially result in system instability or crashes, particularly in environments utilizing advanced networking features. Organizations using Linux-based systems, especially those with high-performance networking requirements, should prioritize addressing this issue to maintain system reliability and security.
Original NVD Description
In the Linux kernel, the following vulnerability has been resolved: net/sched: defer qdisc freeing after failed creation An RTM_NEWQDISC request can make clsact bind a populated shared ingress block during ->init(), publishing an embedded mini_Qdisc to lockless readers. If the same request has an invalid TCA_RATE, estimator setup fails after ->init(); the unwind removes the pointer but synchronously frees its containing qdisc while tc_run() may still hold it. Retire failed qdiscs through the same RCU helper as normal destruction. Inline the synchronous free into the callback now that no direct callers remain.