提交 b04c4619 编写于 作者: W Wang, Xiaoming 提交者: David S. Miller

net: ipv4: current group_info should be put after using.

Plug a group_info refcount leak in ping_init.
group_info is only needed during initialization and
the code failed to release the reference on exit.
While here move grabbing the reference to a place
where it is actually needed.
Signed-off-by: NChuansheng Liu <chuansheng.liu@intel.com>
Signed-off-by: NZhang Dongxing <dongxing.zhang@intel.com>
Signed-off-by: Nxiaoming wang <xiaoming.wang@intel.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>
上级 321d03c8
......@@ -252,26 +252,33 @@ int ping_init_sock(struct sock *sk)
{
struct net *net = sock_net(sk);
kgid_t group = current_egid();
struct group_info *group_info = get_current_groups();
int i, j, count = group_info->ngroups;
struct group_info *group_info;
int i, j, count;
kgid_t low, high;
int ret = 0;
inet_get_ping_group_range_net(net, &low, &high);
if (gid_lte(low, group) && gid_lte(group, high))
return 0;
group_info = get_current_groups();
count = group_info->ngroups;
for (i = 0; i < group_info->nblocks; i++) {
int cp_count = min_t(int, NGROUPS_PER_BLOCK, count);
for (j = 0; j < cp_count; j++) {
kgid_t gid = group_info->blocks[i][j];
if (gid_lte(low, gid) && gid_lte(gid, high))
return 0;
goto out_release_group;
}
count -= cp_count;
}
return -EACCES;
ret = -EACCES;
out_release_group:
put_group_info(group_info);
return ret;
}
EXPORT_SYMBOL_GPL(ping_init_sock);
......
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