diff options
Diffstat (limited to 'block/qcow2.c')
| -rw-r--r-- | block/qcow2.c | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/block/qcow2.c b/block/qcow2.c index 7809f5cab4..f0411a9217 100644 --- a/block/qcow2.c +++ b/block/qcow2.c @@ -511,6 +511,12 @@ static int qcow2_open(BlockDriverState *bs, QDict *options, int flags, } } + if (header.backing_file_offset > s->cluster_size) { + error_setg(errp, "Invalid backing file offset"); + ret = -EINVAL; + goto fail; + } + if (header.backing_file_offset) { ext_end = header.backing_file_offset; } else { |