github-mirror/linux
1
0
Fork 0
mirror of https://github.com/torvalds/linux.git synced 2026-07-27 17:47:41 +02:00
Code Issues Actions Packages Projects Releases Wiki Activity Graph

net: ipv6: fix dif and sdif mismatch in raw6_icmp_error

Browse Source 
In raw6_icmp_error(), raw_v6_match() is called with inet6_iif(skb) passed
to both the 'dif' and 'sdif' arguments. This is a copy-paste or typo error,
as the last argument should represent the secondary interface index (sdif).

This mismatch breaks ICMPv6 error handling for IPv6 raw sockets in VRF
(Virtual Routing and Forwarding) environments. When a raw socket is bound
to a VRF master device, raw_v6_match() fails to find a match because it is
not given the correct sdif value, causing the socket to miss relevant
ICMPv6 error notifications.

Fix this by properly passing inet6_sdif(skb) as the last argument to
raw_v6_match().

Fixes: 5108ab4bf4 ("net: ipv6: add second dif to raw socket lookups")
Signed-off-by: Li RongQing <lirongqing@baidu.com>
Reviewed-by: Joe Damato <joe@dama.to>
Link: https://patch.msgid.link/20260717143230.1836-1-lirongqing@baidu.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
This commit is contained in:
Li RongQing 2026-07-17 22:32:30 +08:00 committed by Jakub Kicinski
parent bb0d96ebe5
commit 440e274da4
1 changed files with 1 additions and 1 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

2
net/ipv6/raw.c
View File

@ -349,7 +349,7 @@ void raw6_icmp_error(struct sk_buff *skb, int nexthdr,
const struct ipv6hdr *ip6h = (const struct ipv6hdr *)skb->data;
if (!raw_v6_match(net, sk, nexthdr, &ip6h->saddr, &ip6h->daddr,
inet6_iif(skb), inet6_iif(skb)))
inet6_iif(skb), inet6_sdif(skb)))
continue;
rawv6_err(sk, skb, type, code, inner_offset, info);
}