Commit d15f5ac8 authored by Herbert Xu's avatar Herbert Xu Committed by David S. Miller

ipv6: frags: Fix bogus skb->sk in reassembled packets

It was reported that IPsec would crash when it encounters an IPv6
reassembled packet because skb->sk is non-zero and not a valid
pointer.

This is because skb->sk is now a union with ip_defrag_offset.

This patch fixes this by resetting skb->sk when exiting from
the reassembly code.
Reported-by: default avatarXiumei Mu <xmu@redhat.com>
Fixes: 219badfa ("ipv6: frags: get rid of ip6frag_skb_cb/...")
Signed-off-by: default avatarHerbert Xu <herbert@gondor.apana.org.au>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parent 8fd1a4af
...@@ -384,6 +384,7 @@ static int ip6_frag_reasm(struct frag_queue *fq, struct sk_buff *prev, ...@@ -384,6 +384,7 @@ static int ip6_frag_reasm(struct frag_queue *fq, struct sk_buff *prev,
if (skb_try_coalesce(head, fp, &headstolen, &delta)) { if (skb_try_coalesce(head, fp, &headstolen, &delta)) {
kfree_skb_partial(fp, headstolen); kfree_skb_partial(fp, headstolen);
} else { } else {
fp->sk = NULL;
if (!skb_shinfo(head)->frag_list) if (!skb_shinfo(head)->frag_list)
skb_shinfo(head)->frag_list = fp; skb_shinfo(head)->frag_list = fp;
head->data_len += fp->len; head->data_len += fp->len;
......
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