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| author | Wei Yongjun <weiyongjun1@huawei.com> | 2022-11-14 14:05:19 +0300 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2022-11-25 19:45:47 +0300 |
| commit | 9f00da9c866d506998bf0a3f699ec900730472da (patch) | |
| tree | 89664e52dae4ca7634c47337a8c8bbbf0080d570 /net | |
| parent | 94822d23310a2718c4214f0a88fabe8a9fe977c6 (diff) | |
| download | linux-9f00da9c866d506998bf0a3f699ec900730472da.tar.xz | |
net/x25: Fix skb leak in x25_lapb_receive_frame()
[ Upstream commit 2929cceb2fcf0ded7182562e4888afafece82cce ]
x25_lapb_receive_frame() using skb_copy() to get a private copy of
skb, the new skb should be freed in the undersized/fragmented skb
error handling path. Otherwise there is a memory leak.
Fixes: cb101ed2c3c7 ("x25: Handle undersized/fragmented skbs")
Signed-off-by: Wei Yongjun <weiyongjun1@huawei.com>
Acked-by: Martin Schiller <ms@dev.tdt.de>
Link: https://lore.kernel.org/r/20221114110519.514538-1-weiyongjun@huaweicloud.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
Diffstat (limited to 'net')
| -rw-r--r-- | net/x25/x25_dev.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/net/x25/x25_dev.c b/net/x25/x25_dev.c index 25bf72ee6cad..226397add422 100644 --- a/net/x25/x25_dev.c +++ b/net/x25/x25_dev.c @@ -117,7 +117,7 @@ int x25_lapb_receive_frame(struct sk_buff *skb, struct net_device *dev, if (!pskb_may_pull(skb, 1)) { x25_neigh_put(nb); - return 0; + goto drop; } switch (skb->data[0]) { |