GitHub-Mirror/Star64_linux
2
0
Fork 0
mirror of https://github.com/Fishwaldo/Star64_linux.git synced 2025-06-28 09:31:14 +00:00
Code Issues Projects Releases Packages Wiki Activity Actions

netfilter: nfnetlink: fix potential dead lock in nfnetlink_rcv_msg()

Browse source 
[ Upstream commit 03832a32bf ]

When type is NFNL_CB_MUTEX and -EAGAIN error occur in nfnetlink_rcv_msg(),
it does not execute nfnl_unlock(). That would trigger potential dead lock.

Fixes: 50f2db9e36 ("netfilter: nfnetlink: consolidate callback types")
Signed-off-by: Ziyang Xuan <william.xuanziyang@huawei.com>
Signed-off-by: Florian Westphal <fw@strlen.de>
Signed-off-by: Sasha Levin <sashal@kernel.org>
This commit is contained in:
Ziyang Xuan 2022-11-03 09:12:02 +08:00 • committed by Justin Hammond
parent a604c3b91c
commit a575908cb3
1 changed files with 1 additions and 0 deletions
Download patch file Download diff file Expand all files Collapse all files

1
net/netfilter/nfnetlink.c
View file

@ -290,6 +290,7 @@ replay:
nfnl_lock(subsys_id);
if (nfnl_dereference_protected(subsys_id) != ss ||
nfnetlink_find_client(type, ss) != nc) {
nfnl_unlock(subsys_id);
err = -EAGAIN;
break;
}