X-Git-Url: http://git.cascardo.info/?a=blobdiff_plain;f=kernel%2Fcred.c;h=5f264fb5737dcd01329fdeff02a4143584ba9c38;hb=1b49dae1ca65cd38221b28911ba08954627a2760;hp=0c0cd8a62285279a521b3f724189fe997da84ddb;hpb=f70ce488c2894cd41ea8489975906adccf82131c;p=cascardo%2Flinux.git

diff --git a/kernel/cred.c b/kernel/cred.c
index 0c0cd8a62285..5f264fb5737d 100644
--- a/kernel/cred.c
+++ b/kernel/cred.c
@@ -689,6 +689,8 @@ EXPORT_SYMBOL(set_security_override_from_ctx);
  */
 int set_create_files_as(struct cred *new, struct inode *inode)
 {
+	if (!uid_valid(inode->i_uid) || !gid_valid(inode->i_gid))
+		return -EINVAL;
 	new->fsuid = inode->i_uid;
 	new->fsgid = inode->i_gid;
 	return security_kernel_create_files_as(new, inode);