diff options
| -rw-r--r-- | block/vmdk.c | 10 |
1 files changed, 10 insertions, 0 deletions
diff --git a/block/vmdk.c b/block/vmdk.c index a7f82e6..fed3b50 100644 --- a/block/vmdk.c +++ b/block/vmdk.c @@ -1734,6 +1734,16 @@ static int vmdk_write_extent(VmdkExtent *extent, int64_t cluster_offset, if (extent->compressed) { void *compressed_data; + /* Only whole clusters */ + if (offset_in_cluster || + n_bytes > (extent->cluster_sectors * SECTOR_SIZE) || + (n_bytes < (extent->cluster_sectors * SECTOR_SIZE) && + offset + n_bytes != extent->end_sector * SECTOR_SIZE)) + { + ret = -EINVAL; + goto out; + } + if (!extent->has_marker) { ret = -EINVAL; goto out; |