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| author | Justin Iurman <justin.iurman@uliege.be> | 2024-09-11 19:45:57 +0200 |
|---|---|---|
| committer | Jakub Kicinski <kuba@kernel.org> | 2024-09-13 19:55:49 -0700 |
| commit | 2c84b0aa28b9e73e8c4b4ce038269469434ae372 (patch) | |
| tree | ffdbab1b6ba7179ecb01fb5ec205f481f06b8331 /net | |
| parent | b9c7ac4fe22c608acf6153a3329df2b6b6cd416c (diff) | |
| download | linux-stable-2c84b0aa28b9e73e8c4b4ce038269469434ae372.tar.gz linux-stable-2c84b0aa28b9e73e8c4b4ce038269469434ae372.tar.bz2 linux-stable-2c84b0aa28b9e73e8c4b4ce038269469434ae372.zip | |
net: ipv6: rpl_iptunnel: Fix memory leak in rpl_input
Free the skb before returning from rpl_input when skb_cow_head() fails.
Use a "drop" label and goto instructions.
Fixes: a7a29f9c361f ("net: ipv6: add rpl sr tunnel")
Signed-off-by: Justin Iurman <justin.iurman@uliege.be>
Reviewed-by: Simon Horman <horms@kernel.org>
Link: https://patch.msgid.link/20240911174557.11536-1-justin.iurman@uliege.be
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Diffstat (limited to 'net')
| -rw-r--r-- | net/ipv6/rpl_iptunnel.c | 12 |
1 files changed, 7 insertions, 5 deletions
diff --git a/net/ipv6/rpl_iptunnel.c b/net/ipv6/rpl_iptunnel.c index 2c83b7586422..db3c19a42e1c 100644 --- a/net/ipv6/rpl_iptunnel.c +++ b/net/ipv6/rpl_iptunnel.c @@ -263,10 +263,8 @@ static int rpl_input(struct sk_buff *skb) rlwt = rpl_lwt_lwtunnel(orig_dst->lwtstate); err = rpl_do_srh(skb, rlwt); - if (unlikely(err)) { - kfree_skb(skb); - return err; - } + if (unlikely(err)) + goto drop; local_bh_disable(); dst = dst_cache_get(&rlwt->cache); @@ -286,9 +284,13 @@ static int rpl_input(struct sk_buff *skb) err = skb_cow_head(skb, LL_RESERVED_SPACE(dst->dev)); if (unlikely(err)) - return err; + goto drop; return dst_input(skb); + +drop: + kfree_skb(skb); + return err; } static int nla_put_rpl_srh(struct sk_buff *skb, int attrtype, |