CyberRota Analysis
AI-GeneratedThe vulnerability affects the Linux kernel's xfrm input state cache insertion process, where a race condition can allow a dead state to be added to the cache after passing a validity check. This flaw could lead to potential stability issues or unexpected behavior in network traffic processing. Organizations using Linux systems, particularly those relying on xfrm for IPsec or other network security features, should prioritize addressing this vulnerability to ensure the integrity and reliability of their network operations.
Original NVD Description
In the Linux kernel, the following vulnerability has been resolved: xfrm: Fix xfrm state cache insertion race The xfrm input state cache insertion code checks the validity of the state before acquiring the global xfrm_state_lock. Thus it's possible for someone else to kill the state after it passed the validity check, and then the insertion will add the dead state to the cache. Fix this by moving the validity check inside the lock. This entire function is called on the input path, where BH must be off (e.g., the caller of this function xfrm_input acquires its spinlocks without disabling BH). So there is no need to disable BH here or take the RCU read lock. Remove both and replace them with an assertion that trips if BH is accidentally enabled on some future calling path.