From 1d38781da934809e6ce0b8c3718c4b3bccdfe1d2 Mon Sep 17 00:00:00 2001 From: Jeremy Harris Date: Wed, 28 Dec 2022 19:39:06 +0000 Subject: Fix recursion on dns_again_means_nonexist. Bug 2911 --- doc/doc-txt/ChangeLog | 8 ++++++++ 1 file changed, 8 insertions(+) (limited to 'doc/doc-txt') diff --git a/doc/doc-txt/ChangeLog b/doc/doc-txt/ChangeLog index 95c15b96b..ee86f52d6 100644 --- a/doc/doc-txt/ChangeLog +++ b/doc/doc-txt/ChangeLog @@ -86,6 +86,14 @@ JH/18 Fix a fencepost error in logging. Previously (since 4.92) when a log line misleading message "bad memory reference; pool not found". Found and traced by Jasen Betts. +JH/19 Bug 2911: Fix a recursion in DNS lookups. Previously, if the main option + dns_again_means_nonexist included an element causing a DNS lookup which + iteslf returned DNS_AGAIN, unbounded recursion occurred. Possible results + included (though probably not limited to) a process crash from stack + memory limit, or from excessive open files. Replace this with a paniclog + whine (as this is likely a configuration error), and returning + DNS_NOMATCH. + Exim version 4.96 ----------------- -- cgit v1.2.3