Package: dovecot-sieve
Version: 1:2.2.35-2
Severity: normal
sieve processing crashes reproducibly with certain emails. This causes
these emails to be bounced with delivery failures.
mail.log contains the following information (backtrace manually
reformatted for readability):
Apr 26 10:04:26 black dovecot: lda(default-user): Panic: file
edit-mail.c: line 1908 (merge_modified_headers): assertion failed:
(stream->pos >= init_pos)
Apr 26 10:04:26 black dovecot: lda(default-user): Error: Raw backtrace:
/usr/lib/dovecot/libdovecot.so.0(+0xa0a02) [0x7f55d2d30a02]
-> /usr/lib/dovecot/libdovecot.so.0(+0xa0ac7) [0x7f55d2d30ac7]
-> /usr/lib/dovecot/libdovecot.so.0(i_fatal+0) [0x7f55d2cc0718]
-> /usr/lib/dovecot/libdovecot-sieve.so.0(+0x7f816) [0x7f55d2067816]
-> /usr/lib/dovecot/libdovecot-sieve.so.0(+0x7fdc2) [0x7f55d2067dc2]
-> /usr/lib/dovecot/libdovecot.so.0(i_stream_read+0x53) [0x7f55d2d3c303]
-> /usr/lib/dovecot/libdovecot.so.0(i_stream_read_data+0x3d)
[0x7f55d2d3cdbd]
-> /usr/lib/dovecot/libdovecot.so.0(message_parse_header_next+0x71)
[0x7f55d2d18ba1]
-> /usr/lib/dovecot/libdovecot.so.0(+0x825a9) [0x7f55d2d125a9]
-> /usr/lib/dovecot/libdovecot.so.0(i_stream_read+0x53) [0x7f55d2d3c303]
-> /usr/lib/dovecot/libdovecot.so.0(i_stream_read_data+0x3d)
[0x7f55d2d3cdbd]
-> /usr/lib/dovecot/libdovecot.so.0(io_stream_copy+0x85)
[0x7f55d2d52d25]
-> /usr/lib/dovecot/libdovecot.so.0(+0xc5014) [0x7f55d2d55014]
-> /usr/lib/dovecot/libdovecot.so.0(o_stream_send_istream+0x30)
[0x7f55d2d52b70]
-> /usr/lib/dovecot/libdovecot-sieve.so.0(+0x51bfc) [0x7f55d2039bfc]
-> /usr/lib/dovecot/libdovecot-sieve.so.0(+0x42498) [0x7f55d202a498]
-> /usr/lib/dovecot/libdovecot-sieve.so.0(sieve_result_execute+0x202)
[0x7f55d202b972]
-> /usr/lib/dovecot/libdovecot-sieve.so.0(+0x544ee) [0x7f55d203c4ee]
-> /usr/lib/dovecot/libdovecot-sieve.so.0(sieve_multiscript_run+0xa2)
[0x7f55d203d262]
-> /usr/lib/dovecot/modules/lib90_sieve_plugin.so(+0x3877)
[0x7f55d22ab877]
-> /usr/lib/dovecot/libdovecot-lda.so.0(mail_deliver+0xb6)
[0x7f55d331eb26]
-> /usr/lib/dovecot/dovecot-lda(main+0x67b) [0x5626fbc94bdb]
-> /lib/x86_64-linux-gnu/libc.so.6(__libc_start_main+0xe7)
[0x7f55d28f1a87]
-> /usr/lib/dovecot/dovecot-lda(_start+0x2a) [0x5626fbc9523a]
If this is not an already known upstream bug, I can spend the time to
create a small sieve file and a small message to reproduce.
-- Package-specific info:
dovecot configuration
---------------------
# 2.2.35 (b1cb664): /etc/dovecot/dovecot.conf
# Pigeonhole version 0.4.23 ()
# OS: Linux 4.15.0-2-amd64 x86_64 Debian buster/sid
# Hostname: black.home.cobb.me.uk
log_timestamp = "%Y-%m-%d %H:%M:%S "
login_trusted_networks = 192.168.0.0/16 127.0.0.1
mail_location = maildir:~/dovecot:INDEX=/var/indexes/%u
mail_max_userip_connections = 50
mail_privileged_group = mail
maildir_stat_dirs = yes
namespace {
hidden = yes
inbox = no
list = children
location = mbox:~/mail
prefix = "#mbox/"
separator = /
type = private
}
namespace inbox {
inbox = yes
location =
mailbox Drafts {
special_use = \Drafts
}
mailbox Junk {
special_use = \Junk
}
mailbox Sent {
special_use = \Sent
}
mailbox "Sent Messages" {
special_use = \Sent
}
mailbox Trash {
special_use = \Trash
}
prefix =
separator = /
}
passdb {
driver = pam
}
passdb {
args = scheme=SSHA512 username_format=%n /etc/dovecot/users
driver = passwd-file
}
plugin {
sieve = file:~/sieve;active=~/.dovecot.sieve
sieve_extensions = +editheader +vnd.dovecot.debug
}
protocols = " imap"
service imap {
process_limit = 100
}
service pop3 {
process_limit = 100
}
ssl_cert = </etc/dovecot/private/dovecot-cert.pem
ssl_client_ca_dir = /etc/ssl/certs
ssl_key = # hidden, use -P to show it
userdb {
driver = passwd
}
userdb {
args = username_format=%n /etc/dovecot/users
driver = passwd-file
}
protocol lmtp {
mail_plugins = " sieve"
}
protocol lda {
mail_plugins = " sieve"
}
-- System Information:
Debian Release: buster/sid
APT prefers testing
APT policy: (900, 'testing')
Architecture: amd64 (x86_64)
Foreign Architectures: i386
Kernel: Linux 4.15.0-2-amd64 (SMP w/4 CPU cores)
Locale: LANG=en_IE.utf8, LC_CTYPE=en_IE.utf8 (charmap=UTF-8)
(ignored: LC_ALL set to en_IE.utf8), LANGUAGE=en_IE.utf8
(charmap=UTF-8) (ignored: LC_ALL set to en_IE.utf8)
Shell: /bin/sh linked to /bin/bash
Init: systemd (via /run/systemd/system)
LSM: AppArmor: enabled
Versions of packages dovecot-sieve depends on:
ii dovecot-core 1:2.2.35-2
ii libc6 2.27-3
ii ucf 3.0038
dovecot-sieve recommends no packages.
dovecot-sieve suggests no packages.
Versions of packages dovecot-sieve is related to:
ii dovecot-core [dovecot-common] 1:2.2.35-2
pn dovecot-dev <none>
pn dovecot-gssapi <none>
ii dovecot-imapd 1:2.2.35-2
pn dovecot-ldap <none>
pn dovecot-lmtpd <none>
pn dovecot-managesieved <none>
pn dovecot-mysql <none>
pn dovecot-pgsql <none>
pn dovecot-pop3d <none>
ii dovecot-sieve 1:2.2.35-2
pn dovecot-sqlite <none>
-- no debconf information
