3.2.93-rc1 review patch. If anyone has any objections, please let me know.
------------------
From: "David S. Miller" <davem@xxxxxxxxxxxxx>
commit e3e86b5119f81e5e2499bea7ea1ebe8ac6aab789 upstream.
If ip6_find_1stfragopt() fails and we return an error we have to free
up 'segs' because nobody else is going to.
Fixes: 2423496af35d ("ipv6: Prevent overrun when parsing v6 header options")
Reported-by: Ben Hutchings <ben@xxxxxxxxxxxxxxx>
Signed-off-by: David S. Miller <davem@xxxxxxxxxxxxx>
[bwh: Backported to 3.2: adjust filename, context]
Signed-off-by: Ben Hutchings <ben@xxxxxxxxxxxxxxx>
---
net/ipv6/af_inet6.c | 4 +++-
1 file changed, 3 insertions(+), 1 deletion(-)
--- a/net/ipv6/af_inet6.c
+++ b/net/ipv6/af_inet6.c
@@ -824,8 +824,10 @@ static struct sk_buff *ipv6_gso_segment(
sizeof(*ipv6h));
if (proto == IPPROTO_UDP) {
int err = ip6_find_1stfragopt(skb, &prevhdr);
- if (err < 0)
+ if (err < 0) {
+ kfree_skb_list(segs);
return ERR_PTR(err);
+ }
fptr = (struct frag_hdr *)(skb_network_header(skb) +
err);
fptr->frag_off = htons(offset);