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-rw-r--r--lib/sqfs/data_reader.c5
1 files changed, 4 insertions, 1 deletions
diff --git a/lib/sqfs/data_reader.c b/lib/sqfs/data_reader.c
index 2a4bf5a..e3a2eef 100644
--- a/lib/sqfs/data_reader.c
+++ b/lib/sqfs/data_reader.c
@@ -268,7 +268,10 @@ int sqfs_data_reader_get_fragment(sqfs_data_reader_t *data,
block_count = sqfs_inode_get_file_block_count(inode);
- if (block_count * data->block_size >= filesz)
+ if (block_count > (UINT64_MAX / data->block_size))
+ return SQFS_ERROR_OVERFLOW;
+
+ if ((sqfs_u64)block_count * data->block_size >= filesz)
return 0;
frag_sz = filesz % data->block_size;