From e3211c120a85b792978bcb4be7b2886df18d27f0 Mon Sep 17 00:00:00 2001 From: Andy Lutomirski Date: Sun, 14 Apr 2013 16:28:19 -0700 Subject: userns: Check uid_map's opener's fsuid, not the current fsuid Signed-off-by: Andy Lutomirski --- kernel/user_namespace.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) (limited to 'kernel') diff --git a/kernel/user_namespace.c b/kernel/user_namespace.c index e2d4ace4481..5c16f3aa757 100644 --- a/kernel/user_namespace.c +++ b/kernel/user_namespace.c @@ -797,12 +797,12 @@ static bool new_idmap_permitted(const struct file *file, u32 id = new_map->extent[0].lower_first; if (cap_setid == CAP_SETUID) { kuid_t uid = make_kuid(ns->parent, id); - if (uid_eq(uid, current_fsuid())) + if (uid_eq(uid, file->f_cred->fsuid)) return true; } else if (cap_setid == CAP_SETGID) { kgid_t gid = make_kgid(ns->parent, id); - if (gid_eq(gid, current_fsgid())) + if (gid_eq(gid, file->f_cred->fsgid)) return true; } } -- cgit v1.2.3-70-g09d2