fs/squashfs: NULL dereference in sqfs_closedir()
sqfs_opendir() called in sqfs_size(), sqfs_read(), sqfs_exists() may fail
leading to sqfs_closedir(NULL) being called. Do not dereference NULL.
Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
diff --git a/fs/squashfs/sqfs.c b/fs/squashfs/sqfs.c
index dca13bd..29805c3 100644
--- a/fs/squashfs/sqfs.c
+++ b/fs/squashfs/sqfs.c
@@ -1716,6 +1716,9 @@
{
struct squashfs_dir_stream *sqfs_dirs;
+ if (!dirs)
+ return;
+
sqfs_dirs = (struct squashfs_dir_stream *)dirs;
free(sqfs_dirs->inode_table);
free(sqfs_dirs->dir_table);