From 2433c8f094a008895e66f25bd1773cdb01c91d01 Mon Sep 17 00:00:00 2001 From: "Eric W. Biederman" Date: Sat, 5 Oct 2013 13:15:30 -0700 Subject: [PATCH] net: Update the sysctl permissions handler to test effective uid/gid Modify the code to use current_euid(), and in_egroup_p, as in done in fs/proc/proc_sysctl.c:test_perm() Cc: stable@vger.kernel.org Reviewed-by: Eric Sandeen Reported-by: Eric Sandeen Signed-off-by: "Eric W. Biederman" Signed-off-by: Linus Torvalds --- net/sysctl_net.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/net/sysctl_net.c b/net/sysctl_net.c index 9bc6db04be3e..e7000be321b0 100644 --- a/net/sysctl_net.c +++ b/net/sysctl_net.c @@ -47,12 +47,12 @@ static int net_ctl_permissions(struct ctl_table_header *head, /* Allow network administrator to have same access as root. */ if (ns_capable(net->user_ns, CAP_NET_ADMIN) || - uid_eq(root_uid, current_uid())) { + uid_eq(root_uid, current_euid())) { int mode = (table->mode >> 6) & 7; return (mode << 6) | (mode << 3) | mode; } /* Allow netns root group to have the same access as the root group */ - if (gid_eq(root_gid, current_gid())) { + if (in_egroup_p(root_gid)) { int mode = (table->mode >> 3) & 7; return (mode << 3) | mode; } -- 2.20.1