Fixed Bug #67411 fileinfo: cdf_check_stream_offset insufficient boundary check

Upstream:
file/file@36fadd2

Conflicts:
	ext/fileinfo/libmagic/cdf.c

Author: remicollet

ext/fileinfo/libmagic/cdf.c

@@ -277,13 +277,15 @@ cdf_check_stream_offset(const cdf_stream_t *sst, const cdf_header_t *h,
 {
 	const char *b = (const char *)sst->sst_tab;
 	const char *e = ((const char *)p) + tail;
+	size_t ss = sst->sst_dirlen < h->h_min_size_standard_stream ?
+	    CDF_SHORT_SEC_SIZE(h) : CDF_SEC_SIZE(h);
 	(void)&line;
-	if (e >= b && (size_t)(e - b) < CDF_SEC_SIZE(h) * sst->sst_len)
+	if (e >= b && (size_t)(e - b) <= ss * sst->sst_len)
 		return 0;
 	DPRINTF(("%d: offset begin %p end %p %" SIZE_T_FORMAT "u"
 	    " >= %" SIZE_T_FORMAT "u [%" SIZE_T_FORMAT "u %"
 	    SIZE_T_FORMAT "u]\n", line, b, e, (size_t)(e - b),
-	    CDF_SEC_SIZE(h) * sst->sst_len, CDF_SEC_SIZE(h), sst->sst_len));
+	    ss * sst->sst_len, ss, sst->sst_len));
 	errno = EFTYPE;
 	return -1;
 }