libhfs: fix potential truncation of large contiguous extents

Individual extents greater than 4gb are possible at least in theory, in which case hfslib_readd_with_extents would have only read partial data.
0x09 · May 27, 2024 · 3a5caf2 · 3a5caf2
1 parent 4cfb690
commit 3a5caf2
Showing 1 changed file with 1 addition and 1 deletion.
diff --git a/lib/libhfs/libhfs.c b/lib/libhfs/libhfs.c
@@ -2793,7 +2793,7 @@ hfslib_readd_with_extents(
 		if (in_extents[i].block_count == 0)
 			continue;
 
-		ext_length = in_extents[i].block_count * in_vol->vh.block_size;
+		ext_length = (uint64_t)in_extents[i].block_count * in_vol->vh.block_size;
 
 		if (last_offset + ext_length < last_offset)
 			break;