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authorAndy Lutomirski <luto@amacapital.net>2013-04-14 16:28:19 -0700
committerAndy Lutomirski <luto@amacapital.net>2013-04-14 18:11:31 -0700
commite3211c120a85b792978bcb4be7b2886df18d27f0 (patch)
tree6828a385e00925ad5699ad8ca365c6e7311416fc
parent6708075f104c3c9b04b23336bb0366ca30c3931b (diff)
downloadlinux-e3211c120a85b792978bcb4be7b2886df18d27f0.tar.bz2
userns: Check uid_map's opener's fsuid, not the current fsuid
Signed-off-by: Andy Lutomirski <luto@amacapital.net>
-rw-r--r--kernel/user_namespace.c4
1 files changed, 2 insertions, 2 deletions
diff --git a/kernel/user_namespace.c b/kernel/user_namespace.c
index e2d4ace4481b..5c16f3aa757a 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;
}
}