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--- a/src/sox-fmt.c
+++ b/src/sox-fmt.c
@@ -46,7 +46,9 @@
lsx_readdw(ft, &comments_bytes))
return SOX_EOF;
- if (((headers_bytes + 4) & 7) || headers_bytes < FIXED_HDR + comments_bytes ||
+ if (((headers_bytes + 4) & 7) ||
+ comments_bytes > 0x40000000 || /* max 1 GB */
+ headers_bytes < FIXED_HDR + comments_bytes ||
(num_channels > 65535)) /* Reserve top 16 bits */ {
lsx_fail_errno(ft, SOX_EHDR, "invalid sox file format header");
return SOX_EOF;
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