kernel_samsung_a53x/drivers/net/xen-netback
Jeongjun Park fcc9e6b2eb net/xen-netback: prevent UAF in xenvif_flush_hash()
[ Upstream commit 0fa5e94a1811d68fbffa0725efe6d4ca62c03d12 ]

During the list_for_each_entry_rcu iteration call of xenvif_flush_hash,
kfree_rcu does not exist inside the rcu read critical section, so if
kfree_rcu is called when the rcu grace period ends during the iteration,
UAF occurs when accessing head->next after the entry becomes free.

Therefore, to solve this, you need to change it to list_for_each_entry_safe.

Signed-off-by: Jeongjun Park <aha310510@gmail.com>
Link: https://patch.msgid.link/20240822181109.2577354-1-aha310510@gmail.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
2024-11-23 23:21:37 +01:00
..
common.h Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
hash.c net/xen-netback: prevent UAF in xenvif_flush_hash() 2024-11-23 23:21:37 +01:00
interface.c xen-netback: use default TX queue size for vifs 2024-11-08 11:25:45 +01:00
Makefile Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
netback.c xen-netback: properly sync TX responses 2024-11-18 12:13:30 +01:00
rx.c Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
xenbus.c Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00