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Created attachment 1277538 [details]
Backport of 0b4212e8e64afe022216b0eaa7f4b7da3a0038ae + 3aa8ed0278e9de6a86ec63a146db9abe3ea30a77

Description of problem:

cyrus-imapd leaks memory, causing the daemon to eventually make the system crash.
Requesting a backport of the following upstream commits fixing the issue:
- 0b4212e8e64afe022216b0eaa7f4b7da3a0038ae
- 3aa8ed0278e9de6a86ec63a146db9abe3ea30a77

Version-Release number of selected component (if applicable):

cyrus-imapd-2.4.17-8.el7

How reproducible:

Always

Steps to Reproduce:
1. run valgrind and observe

Actual results:

Memory leaks happen

Expected results:

No memory leak

Additional info:

Attaching the suggested fix.

Since the problem described in this bug report should be
resolved in a recent advisory, it has been closed with a
resolution of ERRATA.

For information on the advisory, and where to find the updated
files, follow the link below.

If the solution does not work for you, open a new bug report.

https://access.redhat.com/errata/RHEA-2017:1932