diff options
| author | Andy Lutomirski <luto@amacapital.net> | 2013-04-14 16:28:19 -0700 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2013-04-25 12:51:23 -0700 |
| commit | be4c1b46075d42cbd82bc0d1e833dc4de052ae85 (patch) | |
| tree | 63548c73369ca3ee7bd480446ddb2070a60f4b11 /kernel | |
| parent | d2b12161ea5208d87dae24bcc5f3fed9da79262e (diff) | |
userns: Check uid_map's opener's fsuid, not the current fsuid
commit e3211c120a85b792978bcb4be7b2886df18d27f0 upstream.
Signed-off-by: Andy Lutomirski <luto@amacapital.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'kernel')
| -rw-r--r-- | kernel/user_namespace.c | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/kernel/user_namespace.c b/kernel/user_namespace.c index 6cc21a5114d1..fdf40d6cf8a4 100644 --- a/kernel/user_namespace.c +++ b/kernel/user_namespace.c @@ -763,12 +763,12 @@ 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; } } |