From: Aki Tuomi <aki.tuomi@open-xchange.com>
Date: Mon, 22 Dec 2025 09:05:31 +0000 (+0200)
Subject: [PATCH] lib-regex: Set DREGEX_MAX_MATCHES to library default
X-Git-Tag: archive/raspbian/1%2.4.2+dfsg1-3+rpi1^2~3
X-Git-Url: https://dgit.raspbian.org/%22http:/www.example.com/cgi/%22https://%22%22/%22http:/www.example.com/cgi/%22https:/%22%22?a=commitdiff_plain;h=e4c6a34495e792e6ed21723efed7b07416dc8668;p=dovecot.git

[PATCH] lib-regex: Set DREGEX_MAX_MATCHES to library default


Gbp-Pq: Name lib-regex_Set_DREGEX_MAX_MATCHES_to_library_default.patch
---

diff --git a/src/lib-regex/regex.c b/src/lib-regex/regex.c
index 51e7d6c..5ccf9d5 100644
--- a/src/lib-regex/regex.c
+++ b/src/lib-regex/regex.c
@@ -14,7 +14,7 @@
 #include "pcre2.h"
 
 #define DREGEX_MAX_DEPTH 100
-#define DREGEX_MAX_MATCHES 100
+#define DREGEX_MAX_MATCHES 10000000
 #define DREGEX_MAX_CAPTURE_GROUPS 100
 #define DREGEX_MAX_CPU_SECONDS 1
 
diff --git a/src/lib-regex/test-regex.c b/src/lib-regex/test-regex.c
index 10b393e..4b68bca 100644
--- a/src/lib-regex/test-regex.c
+++ b/src/lib-regex/test-regex.c
@@ -158,19 +158,21 @@ static void test_dregex_match(void)
 			"{1}[a-z0-9]+[.]{1}(([a-z]{2,3})|([a-z]{2,3}[.]"
 			"{1}[a-z]{2,3}))$",
 			"thisisabstractly.andtotally.long.email@"
-			REP10("a") "." REP10("a") "." REP10("a")
+			REP10(REP10("a") "." REP10("a") "." REP10("a") "." REP10("a"))
 			".has",
-			"match limit exceeded",
+			"matching depth limit exceeded",
 			0,
 			-1
 		),
 		MATCH_CASE_FULL(
 			"(a|a?)+",
-			REP10("a") REP10("a"),
-			"match limit exceeded",
+			REP10(REP10("a") REP10("a") REP10("a")),
+			"matching depth limit exceeded",
 			0,
 			-1
 		),
+		/* Live test cases */
+		MATCH_CASE("\\[.*PATCH.*\\]", "Subject: Re: [PATCH v2 3/6] arm64: dts: qcom: qcm6490-shift-otter: Ad"),
 		/* IEEE.1003-2.1992 */
 		MATCH_CASE("me(\\+.*)?@company\\.com",
 			"me+hello@company.com"),