diff options
| author | Jeremy Harris <jgh146exb@wizmail.org> | 2017-12-28 20:09:05 +0000 |
|---|---|---|
| committer | Jeremy Harris <jgh146exb@wizmail.org> | 2017-12-29 13:33:15 +0000 |
| commit | ce93c6d840d56b3cd7b2ced65c4e96820040c8a7 (patch) | |
| tree | c04ca2bc77ee5ea20c21d6871c8e74d4cfb73d7f /doc | |
| parent | cabf3e9902ba212cb85afb63bde7cd88fa027ef4 (diff) | |
Fix crash associated with dnsdb lookup done from DKIM ACL. Bug 2215
Broken-by: cc55f4208e
Diffstat (limited to 'doc')
| -rw-r--r-- | doc/doc-txt/ChangeLog | 12 |
1 files changed, 12 insertions, 0 deletions
diff --git a/doc/doc-txt/ChangeLog b/doc/doc-txt/ChangeLog index 7ec669b1c..7d1d526d7 100644 --- a/doc/doc-txt/ChangeLog +++ b/doc/doc-txt/ChangeLog @@ -25,6 +25,18 @@ JH/04 Bug 2217: Tighten up the parsing of DKIM signature headers. Previously Assumptions at that stage could crash the receive process on malformed input. +JH/05 Bug 2215: Fix crash associated with dnsdb lookup done from DKIM ACL. + While running the DKIM ACL we operate on the Permanent memory pool so that + variables created with "set" persist to the DATA ACL. Also (at any time) + DNS lookups that fail create cache records using the Permanent pool. But + expansions release any allocations made on the current pool - so a dnsdb + lookup expansion done in the DKIM ACL releases the memory used for the + DNS negative-cache, and bad things result. Solution is to switch to the + Main pool for expansions. + While we're in that code, add checks on the DNS cache during store_reset, + active in the testsuite. + Problem spotted, and debugging aided, by Wolfgang Breyha. + Exim version 4.90 ----------------- |