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| author | Wei Yongjun <yongjun_wei@trendmicro.com.cn> | 2013-04-26 15:34:16 +0000 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2013-04-26 23:25:39 -0400 |
| commit | 50754d2188b04a679a249fb57751542643a436e0 (patch) | |
| tree | ccffc5647ba1ea8f4d89cabe27a28f3ddfbf77fe | |
| parent | 78d0b11dcedb21ee432d19eed1a3fa03e8f95353 (diff) | |
| download | linux-stable-50754d2188b04a679a249fb57751542643a436e0.tar.gz linux-stable-50754d2188b04a679a249fb57751542643a436e0.tar.bz2 linux-stable-50754d2188b04a679a249fb57751542643a436e0.zip | |
genetlink: fix possible memory leak in genl_family_rcv_msg()
'attrbuf' is malloced in genl_family_rcv_msg() when family->maxattr &&
family->parallel_ops, thus should be freed before leaving from the error
handling cases, otherwise it will cause memory leak.
Introduced by commit def3117493eafd9dfa1f809d861e0031b2cc8a07
(genl: Allow concurrent genl callbacks.)
Signed-off-by: Wei Yongjun <yongjun_wei@trendmicro.com.cn>
Signed-off-by: David S. Miller <davem@davemloft.net>
| -rw-r--r-- | net/netlink/genetlink.c | 5 |
1 files changed, 3 insertions, 2 deletions
diff --git a/net/netlink/genetlink.c b/net/netlink/genetlink.c index 2f72598dd8fe..2fd6dbea327a 100644 --- a/net/netlink/genetlink.c +++ b/net/netlink/genetlink.c @@ -598,7 +598,7 @@ static int genl_family_rcv_msg(struct genl_family *family, err = nlmsg_parse(nlh, hdrlen, attrbuf, family->maxattr, ops->policy); if (err < 0) - return err; + goto out; } info.snd_seq = nlh->nlmsg_seq; @@ -613,7 +613,7 @@ static int genl_family_rcv_msg(struct genl_family *family, if (family->pre_doit) { err = family->pre_doit(ops, skb, &info); if (err) - return err; + goto out; } err = ops->doit(skb, &info); @@ -621,6 +621,7 @@ static int genl_family_rcv_msg(struct genl_family *family, if (family->post_doit) family->post_doit(ops, skb, &info); +out: if (family->parallel_ops) kfree(attrbuf); |