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.
Affected products
Version statuses are supplied by the assigning organization. Consult the original record for detailed ranges and platform conditions.
Linux Linux
Default version status: unaffected
5e4334dc39443645415450163ff5ff1ee7e79784 to < 6dab4dec9a49121d079981ac913569f232c06b06affected81a331a0e72ddc2f75092603d9577bd1a0ca23ad to < a1a3360a0c44b8b5c134db2a9d0667b61c9cf523affected81a331a0e72ddc2f75092603d9577bd1a0ca23ad to < 041859fd55c81ea55e76d051e39b7b79975b8c7daffected81a331a0e72ddc2f75092603d9577bd1a0ca23ad to < ddd3d0132920319ac426e12456013eadbae67e15affected6.12.13 to < 6.12.97affected
Linux Linux
Default version status: affected
6.13affected0 to < 6.13unaffected6.12.97 to ≤ 6.12.*unaffected6.18.40 to ≤ 6.18.*unaffected7.1.5 to ≤ 7.1.*unaffected7.2 to ≤ *unaffected