From: Eric Dumazet edumazet@google.com
mainline inclusion from mainline-v6.0-rc1 commit 97a4d46b1516250d640c1ae0c9e7129d160d6a1c category: bugfix bugzilla: https://gitee.com/openeuler/kernel/issues/I6ECEK CVE: NA
Reference: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?i...
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I accidentally broke IPv4 traceroute, by swapping iph->saddr and iph->daddr.
Probably because raw_icmp_error() and raw_v4_input() use different order for iph->saddr and iph->daddr.
Fixes: ba44f8182ec2 ("raw: use more conventional iterators") Reported-by: John Sperbeck jsperbeck@google.com Signed-off-by: Eric Dumazet edumazet@google.com Link: https://lore.kernel.org/r/20220623193540.2851799-1-edumazet@google.com Signed-off-by: Jakub Kicinski kuba@kernel.org Signed-off-by: Ziyang Xuan william.xuanziyang@huawei.com Reviewed-by: Yue Haibing yuehaibing@huawei.com Signed-off-by: Jialin Zhang zhangjialin11@huawei.com --- net/ipv4/raw.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/net/ipv4/raw.c b/net/ipv4/raw.c index 08b2578a8e93..7963638f9d15 100644 --- a/net/ipv4/raw.c +++ b/net/ipv4/raw.c @@ -278,7 +278,7 @@ void raw_icmp_error(struct sk_buff *skb, int protocol, u32 info) sk_nulls_for_each(sk, hnode, hlist) { iph = (const struct iphdr *)skb->data; if (!raw_v4_match(net, sk, iph->protocol, - iph->saddr, iph->daddr, dif, sdif)) + iph->daddr, iph->saddr, dif, sdif)) continue; raw_err(sk, skb, info); }