| From | Greg Kroah-Hartman <> | Subject | [PATCH 4.4 31/50] team: fix memory leaks | Date | Fri, 6 Oct 2017 10:53:19 +0200 |
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4.4-stable review patch. If anyone has any objections, please let me know.
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From: Pan Bian <bianpan2016@163.com>
[ Upstream commit 72ec0bc64b9a5d8e0efcb717abfc757746b101b7 ]
In functions team_nl_send_port_list_get() and team_nl_send_options_get(), pointer skb keeps the return value of nlmsg_new(). When the call to genlmsg_put() fails, the memory is not freed(). This will result in memory leak bugs.
Fixes: 9b00cf2d1024 ("team: implement multipart netlink messages for options transfers") Signed-off-by: Pan Bian <bianpan2016@163.com> Acked-by: Jiri Pirko <jiri@mellanox.com> Signed-off-by: David S. Miller <davem@davemloft.net> Signed-off-by: Sasha Levin <alexander.levin@verizon.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> --- drivers/net/team/team.c | 8 ++++++-- 1 file changed, 6 insertions(+), 2 deletions(-)
--- a/drivers/net/team/team.c +++ b/drivers/net/team/team.c @@ -2343,8 +2343,10 @@ start_again: hdr = genlmsg_put(skb, portid, seq, &team_nl_family, flags | NLM_F_MULTI, TEAM_CMD_OPTIONS_GET); - if (!hdr) + if (!hdr) { + nlmsg_free(skb); return -EMSGSIZE; + } if (nla_put_u32(skb, TEAM_ATTR_TEAM_IFINDEX, team->dev->ifindex)) goto nla_put_failure; @@ -2611,8 +2613,10 @@ start_again: hdr = genlmsg_put(skb, portid, seq, &team_nl_family, flags | NLM_F_MULTI, TEAM_CMD_PORT_LIST_GET); - if (!hdr) + if (!hdr) { + nlmsg_free(skb); return -EMSGSIZE; + } if (nla_put_u32(skb, TEAM_ATTR_TEAM_IFINDEX, team->dev->ifindex)) goto nla_put_failure;
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