diff --git a/fs/udf/inode.c b/fs/udf/inode.c
index 5df554a9f9c9..ae796e10f68b 100644
--- a/fs/udf/inode.c
+++ b/fs/udf/inode.c
@@ -1357,6 +1357,12 @@ reread:
 
 	iinfo->i_alloc_type = le16_to_cpu(fe->icbTag.flags) &
 							ICBTAG_FLAG_AD_MASK;
+	if (iinfo->i_alloc_type != ICBTAG_FLAG_AD_SHORT &&
+	    iinfo->i_alloc_type != ICBTAG_FLAG_AD_LONG &&
+	    iinfo->i_alloc_type != ICBTAG_FLAG_AD_IN_ICB) {
+		ret = -EIO;
+		goto out;
+	}
 	iinfo->i_unique = 0;
 	iinfo->i_lenEAttr = 0;
 	iinfo->i_lenExtents = 0;