diff mbox series

[v3,18/25] commoncap: cap_task_fix_setuid(): handle fsid mappings

Message ID 20200218143411.2389182-19-christian.brauner@ubuntu.com
State New, archived
Headers show
Series user_namespace: introduce fsid mappings | expand

Commit Message

Christian Brauner Feb. 18, 2020, 2:34 p.m. UTC
Switch cap_task_fix_setuid() to lookup fsids in the fsid mappings. If no fsid
mappings are setup the behavior is unchanged, i.e. fsids are looked up in the
id mappings.

Signed-off-by: Christian Brauner <christian.brauner@ubuntu.com>
---
/* v2 */
unchanged

/* v3 */
unchanged
---
 security/commoncap.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)
diff mbox series

Patch

diff --git a/security/commoncap.c b/security/commoncap.c
index 55e6cc24f887..0581c6aa8bdc 100644
--- a/security/commoncap.c
+++ b/security/commoncap.c
@@ -1062,7 +1062,7 @@  int cap_task_fix_setuid(struct cred *new, const struct cred *old, int flags)
 		 *          if not, we might be a bit too harsh here.
 		 */
 		if (!issecure(SECURE_NO_SETUID_FIXUP)) {
-			kuid_t root_uid = make_kuid(old->user_ns, 0);
+			kuid_t root_uid = make_kfsuid(old->user_ns, 0);
 			if (uid_eq(old->fsuid, root_uid) && !uid_eq(new->fsuid, root_uid))
 				new->cap_effective =
 					cap_drop_fs_set(new->cap_effective);