Bug#1000843: exim4: set message_id_header_domain cause SIGSEGV (maybe attempt to write to immutable memory)

Andreas Metzler ametzler at bebt.de
Tue Nov 30 17:42:27 GMT 2021

On 2021-11-30 Youhei SASAKI <uwabami at gfd-dennou.org> wrote:
> Package: exim4
> Version: 4.95-2
> Severity: important
> X-Debbugs-Cc: none, Youhei SASAKI <uwabami at gfd-dennou.org>

> Dear Maintainer,

> When I set 'message_id_header_domain', 'message_id_header_text'
> in /etc/exim4/exim4.conf.localmacros,

>     % sendmail -t < test
>     2021-11-30 14:50:47 1mrw2R-000EV4-KH SIGSEGV (maybe attempt to write to
>     immutable memory)
>     55742 segmentation fault  sendmail -t < test

> If I remove these parameter, just fine.

Hmm. Works for me:
ametzler at argenau:~$ /usr/sbin/exim  -bP | grep message_id
message_id_header_domain = midonly.argenau.bebt.de
message_id_header_text = blah
ametzler at argenau:~$ printf 'To: ametzler at localhost\nFrom: ametzler at localhost\nSubject: test\n\nblah\n' | /usr/sbin/sendmail -t
You have mail in /var/mail/ametzler

Anything special on your system?

cu Andreas

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