| From | Greg Kroah-Hartman <> | Subject | [PATCH 5.4 006/158] inet_diag: Fix error path to cancel the meseage in inet_req_diag_fill() | Date | Mon, 23 Nov 2020 13:20:34 +0100 |
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From: Wang Hai <wanghai38@huawei.com>
[ Upstream commit e33de7c5317e2827b2ba6fd120a505e9eb727b05 ]
nlmsg_cancel() needs to be called in the error path of inet_req_diag_fill to cancel the message.
Fixes: d545caca827b ("net: inet: diag: expose the socket mark to privileged processes.") Reported-by: Hulk Robot <hulkci@huawei.com> Signed-off-by: Wang Hai <wanghai38@huawei.com> Link: https://lore.kernel.org/r/20201116082018.16496-1-wanghai38@huawei.com Signed-off-by: Jakub Kicinski <kuba@kernel.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> --- net/ipv4/inet_diag.c | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-)
--- a/net/ipv4/inet_diag.c +++ b/net/ipv4/inet_diag.c @@ -388,8 +388,10 @@ static int inet_req_diag_fill(struct soc r->idiag_inode = 0; if (net_admin && nla_put_u32(skb, INET_DIAG_MARK, - inet_rsk(reqsk)->ir_mark)) + inet_rsk(reqsk)->ir_mark)) { + nlmsg_cancel(skb, nlh); return -EMSGSIZE; + } nlmsg_end(skb, nlh); return 0;
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