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 --- fs/squashfs/sqfs.c | 3 +++ 1 file changed, 3 insertions(+)

diff --git a/fs/squashfs/sqfs.c b/fs/squashfs/sqfs.c index dca13bd1f1..29805c3c6f 100644 --- a/fs/squashfs/sqfs.c +++ b/fs/squashfs/sqfs.c @@ -1716,6 +1716,9 @@ void sqfs_closedir(struct fs_dir_stream *dirs) { 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); -- 2.29.2