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authorDavid S. Miller <davem@davemloft.net>2017-06-04 21:41:10 -0400
committerDavid S. Miller <davem@davemloft.net>2017-06-04 21:41:10 -0400
commite3e86b5119f81e5e2499bea7ea1ebe8ac6aab789 (patch)
treefa83f365a918287b03ba5bcc48dd0878cb14aa96 /net
parent9a1c44d989bff4c992b8b9a112d9fda275ea5515 (diff)
downloadlinux-e3e86b5119f81e5e2499bea7ea1ebe8ac6aab789.tar.bz2
ipv6: Fix leak in ipv6_gso_segment().
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@decadent.org.uk> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net')
-rw-r--r--net/ipv6/ip6_offload.c4
1 files changed, 3 insertions, 1 deletions
diff --git a/net/ipv6/ip6_offload.c b/net/ipv6/ip6_offload.c
index 280268f1dd7b..cdb3728faca7 100644
--- a/net/ipv6/ip6_offload.c
+++ b/net/ipv6/ip6_offload.c
@@ -116,8 +116,10 @@ static struct sk_buff *ipv6_gso_segment(struct sk_buff *skb,
if (udpfrag) {
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 *)((u8 *)ipv6h + err);
fptr->frag_off = htons(offset);
if (skb->next)