CyberRota Analysis
AI-GeneratedThe vulnerability affects the Linux kernel's handling of the bcm_op structure within the CAN subsystem, specifically due to missing RCU (Read-Copy-Update) list annotations and operations. This oversight can lead to improper initialization and potential memory management issues, which may result in data corruption or system instability. Organizations utilizing Linux systems with CAN support should prioritize addressing this vulnerability to ensure system reliability and integrity.
Original NVD Description
In the Linux kernel, the following vulnerability has been resolved: can: bcm: add missing rcu list annotations and operations sashiko-bot remarked the missing use of list_add_rcu() in bcm_[rx|tx]_setup() to have a proper initialized bcm_op structure when bcm_proc_show() traverses the bcm_op's under rcu_read_lock(). To cover all initial settings of the bcm_op's the list_add_rcu() calls are moved to the end of the setup code. While at it, also fix the mirroring removal side: bcm_release() called bcm_remove_op() - which frees the op via call_rcu() - on ops that were still linked in bo->tx_ops/bo->rx_ops, without list_del_rcu() first. Unlink each op with list_del_rcu() before handing it to bcm_remove_op(), matching the existing pattern in bcm_delete_tx_op()/bcm_delete_rx_op().