Bug#956119: asterisk: segfault in libspandsp.so.2.0.0 when using Set(FAXOPT(gateway)=yes, 30) between SIP and iax

[Benoit Panizzon]

Package: asterisk
Version: 1:16.2.1~dfsg-1+deb10u1
Severity: normal

Dear Maintainer,

*** Reporter, please consider answering these questions, where appropriate ***

Using iaxmodem with hylafax

[iaxmodem]
requirecalltoken=no
type=friend
secret=*****
context=from-iax
host=dynamic
language=de
qualify=yes

Other leg is of type 'pjsip', endpoint restricted to alaw only to be sure it's not a g722
or other codec issue.

On a Fax origination from iaxmodem, asterisk crashes:

[14509242.948899] asterisk[27070]: segfault at 2c7b4 ip 00007f9a52389b90 sp 00007f9a23d8a4f8 error 4 in libspandsp.so.2.0.0[7f9a5234d000+56000]
[14509242.948908] Code: 00 00 00 00 00 5b c3 0f 1f 00 e9 1b fd ff ff 0f 1f 00 e8 33 ef ff ff eb e2 90 e9 2b ef ff ff 66 66 2e 0f 1f 84 00 00 00 00 00 <8b> 87 8c 2c 00 00 85 c0 7e 0c 29 f0 89 87 8c 2c 00 00 85 c0 7e 0a

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-- System Information:
Debian Release: 10.3
  APT prefers stable-updates
  APT policy: (500, 'stable-updates'), (500, 'stable')
Architecture: amd64 (x86_64)

Kernel: Linux 4.19.0-6-amd64 (SMP w/4 CPU cores)
Locale: LANG=de_CH.UTF-8, LC_CTYPE=de_CH.UTF-8 (charmap=UTF-8), LANGUAGE=de_CH:de (charmap=UTF-8)
Shell: /bin/sh linked to /bin/dash
Init: systemd (via /run/systemd/system)
LSM: AppArmor: enabled

Versions of packages asterisk depends on:
ii  adduser                  3.118
ii  asterisk-config          1:16.2.1~dfsg-1+deb10u1
ii  asterisk-core-sounds-en  1.6.1-1
ii  asterisk-modules         1:16.2.1~dfsg-1+deb10u1
ii  libc6                    2.28-10
ii  libcap2                  1:2.25-2
ii  libedit2                 3.1-20181209-1
ii  libjansson4              2.12-1
ii  libpopt0                 1.16-12
ii  libsqlite3-0             3.27.2-3
ii  libssl1.1                1.1.1d-0+deb10u2
ii  libsystemd0              241-7~deb10u3
ii  liburiparser1            0.9.1-1
ii  libuuid1                 2.33.1-0.1
ii  libxml2                  2.9.4+dfsg1-7+b3
ii  libxslt1.1               1.1.32-2.2~deb10u1
ii  lsb-base                 10.2019051400

Versions of packages asterisk recommends:
ii  asterisk-moh-opsound-gsm                         2.03-1
ii  asterisk-voicemail [asterisk-voicemail-storage]  1:16.2.1~dfsg-1+deb10u1
ii  sox                                              14.4.2+git20190427-1

Versions of packages asterisk suggests:
pn  asterisk-dahdi   <none>
pn  asterisk-dev     <none>
pn  asterisk-doc     <none>
pn  asterisk-ooh323  <none>
ii  asterisk-opus    13.7+20171009-2
pn  asterisk-vpb     <none>

-- no debconf information