Kuniyuki Iwashima 7172dc93d6 af_unix: Add dead flag to struct scm_fp_list. ... Commit 1af2dface5 ("af_unix: Don't access successor in unix_del_edges() during GC.") fixed use-after-free by avoid accessing edge->successor while GC is in progress. However, there could be a small race window where another process could call unix_del_edges() while gc_in_progress is true and __skb_queue_purge() is on the way. So, we need another marker for struct scm_fp_list which indicates if the skb is garbage-collected. This patch adds dead flag in struct scm_fp_list and set it true before calling __skb_queue_purge(). Fixes: 1af2dface5 ("af_unix: Don't access successor in unix_del_edges() during GC.") Signed-off-by: Kuniyuki Iwashima <kuniyu@amazon.com> Acked-by: Paolo Abeni <pabeni@redhat.com> Link: https://lore.kernel.org/r/20240508171150.50601-1-kuniyu@amazon.com Signed-off-by: Jakub Kicinski <kuba@kernel.org>		2024-05-10 18:52:45 -07:00
..
af_unix.c	Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net	2024-04-18 13:12:24 -07:00
diag.c	Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net	2024-02-01 15:12:37 -08:00
garbage.c	af_unix: Add dead flag to struct scm_fp_list.	2024-05-10 18:52:45 -07:00
Kconfig	af_unix: Remove CONFIG_UNIX_SCM.	2024-01-31 16:41:16 -08:00
Makefile	af_unix: Remove CONFIG_UNIX_SCM.	2024-01-31 16:41:16 -08:00
sysctl_net_unix.c	net: Remove the now superfluous sentinel elements from ctl_table array	2024-05-03 13:29:41 +01:00
unix_bpf.c	bpf: sockmap, fix proto update hook to avoid dup calls	2024-01-03 16:50:06 -08:00