2 files changed, 15 insertions, 0 deletions

diff --git a/fs/isofs/dir.c b/fs/isofs/dir.c
index 1ba407c64df..2f0dc5a1463 100644
--- a/fs/isofs/dir.c
+++ b/fs/isofs/dir.c
@@ -145,6 +145,14 @@ static int do_isofs_readdir(struct inode *inode, struct file *filp,
                         }
                         de = tmpde;
                 }
+                /* Basic sanity check, whether name doesn't exceed dir entry */
+                if (de_len < de->name_len[0] +
+                                        sizeof(struct iso_directory_record)) {
+                        printk(KERN_NOTICE "iso9660: Corrupted directory entry"
+                               " in block %lu of inode %lu\n", block,
+                               inode->i_ino);
+                        return -EIO;
+                }
 
                 if (first_de) {
                         isofs_normalize_block_and_offset(de,
diff --git a/fs/isofs/namei.c b/fs/isofs/namei.c
index 344b247bc29..8299889a835 100644
--- a/fs/isofs/namei.c
+++ b/fs/isofs/namei.c
@@ -111,6 +111,13 @@ isofs_find_entry(struct inode *dir, struct dentry *dentry,
 
                 dlen = de->name_len[0];
                 dpnt = de->name;
+                /* Basic sanity check, whether name doesn't exceed dir entry */
+                if (de_len < dlen + sizeof(struct iso_directory_record)) {
+                        printk(KERN_NOTICE "iso9660: Corrupted directory entry"
+                               " in block %lu of inode %lu\n", block,
+                               dir->i_ino);
+                        return 0;
+                }
 
                 if (sbi->s_rock &&
                     ((i = get_rock_ridge_filename(de, tmpname, dir)))) {