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authorZhengchao Shao <shaozhengchao@huawei.com>2022-08-15 05:46:29 +0300
committerJakub Kicinski <kuba@kernel.org>2022-08-16 05:58:30 +0300
commit5b22f62724a0a09e00d301abf5b57b0c12be8a16 (patch)
treec85cc206a3114fd1fcfb9e6e5db7457c24a73e6d /net
parent3a12df22a8f68954a4ba48435c06b3d1791c87c4 (diff)
downloadlinux-5b22f62724a0a09e00d301abf5b57b0c12be8a16.tar.xz
net: rtnetlink: fix module reference count leak issue in rtnetlink_rcv_msg
When bulk delete command is received in the rtnetlink_rcv_msg function, if bulk delete is not supported, module_put is not called to release the reference counting. As a result, module reference count is leaked. Fixes: a6cec0bcd342 ("net: rtnetlink: add bulk delete support flag") Signed-off-by: Zhengchao Shao <shaozhengchao@huawei.com> Acked-by: Nikolay Aleksandrov <razor@blackwall.org> Link: https://lore.kernel.org/r/20220815024629.240367-1-shaozhengchao@huawei.com Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Diffstat (limited to 'net')
-rw-r--r--net/core/rtnetlink.c1
1 files changed, 1 insertions, 0 deletions
diff --git a/net/core/rtnetlink.c b/net/core/rtnetlink.c
index ac45328607f7..4b5b15c684ed 100644
--- a/net/core/rtnetlink.c
+++ b/net/core/rtnetlink.c
@@ -6070,6 +6070,7 @@ static int rtnetlink_rcv_msg(struct sk_buff *skb, struct nlmsghdr *nlh,
if (kind == RTNL_KIND_DEL && (nlh->nlmsg_flags & NLM_F_BULK) &&
!(flags & RTNL_FLAG_BULK_DEL_SUPPORTED)) {
NL_SET_ERR_MSG(extack, "Bulk delete is not supported");
+ module_put(owner);
goto err_unlock;
}