From 7f80ccfe996871ca69648efee74a60ae7ad0dcd9 Mon Sep 17 00:00:00 2001 From: "Gustavo A. R. Silva" Date: Tue, 31 Mar 2020 11:35:06 -0500 Subject: [PATCH] net: ipv6: rpl_iptunnel: Fix potential memory leak in rpl_do_srh_inline In case memory resources for buf were allocated, release them before return. Addresses-Coverity-ID: 1492011 ("Resource leak") Fixes: a7a29f9c361f ("net: ipv6: add rpl sr tunnel") Signed-off-by: Gustavo A. R. Silva Signed-off-by: David S. Miller --- net/ipv6/rpl_iptunnel.c | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-) diff --git a/net/ipv6/rpl_iptunnel.c b/net/ipv6/rpl_iptunnel.c index 203037afe001..a49ddc6cd020 100644 --- a/net/ipv6/rpl_iptunnel.c +++ b/net/ipv6/rpl_iptunnel.c @@ -155,8 +155,10 @@ static int rpl_do_srh_inline(struct sk_buff *skb, const struct rpl_lwt *rlwt, hdrlen = ((csrh->hdrlen + 1) << 3); err = skb_cow_head(skb, hdrlen + skb->mac_len); - if (unlikely(err)) + if (unlikely(err)) { + kfree(buf); return err; + } skb_pull(skb, sizeof(struct ipv6hdr)); skb_postpull_rcsum(skb, skb_network_header(skb), -- 2.39.5