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netfilter: cttimeout: fix slab-out-of-bounds read typo in cttimeout_net_exit 

syzbot reports:
  BUG: KASAN: slab-out-of-bounds in __list_del_entry_valid+0xcc/0xf0 lib/list_debug.c:42
  [..]
  list_del include/linux/list.h:148 [inline]
  cttimeout_net_exit+0x211/0x540 net/netfilter/nfnetlink_cttimeout.c:617

Problem is the wrong name of the list member, so container_of() result is wrong.

Reported-by: <syzbot+92968395eedbdbd3617d@syzkaller.appspotmail.com>
Fixes: 78222bacfc ("netfilter: cttimeout: decouple unlink and free on netns destruction")
Signed-off-by: Florian Westphal <fw@strlen.de>
This commit is contained in:
Florian Westphal 2022-06-15 15:36:54 +02:00
parent b1fd94e704
commit 394e771684
1 changed files with 1 additions and 1 deletions
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2
net/netfilter/nfnetlink_cttimeout.c
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@ -614,7 +614,7 @@ static void __net_exit cttimeout_net_exit(struct net *net)
nf_ct_untimeout(net, NULL);
list_for_each_entry_safe(cur, tmp, &pernet->nfct_timeout_freelist, head) {
list_for_each_entry_safe(cur, tmp, &pernet->nfct_timeout_freelist, free_head) {
list_del(&cur->free_head);
if (refcount_dec_and_test(&cur->refcnt))