[asterisk-bugs] [JIRA] (ASTERISK-21242) Segfault when T.38 re-invite retransmission receives 200 OK

Digium Subversion (JIRA) noreply at issues.asterisk.org
Sun Dec 8 21:19:03 CST 2013


     [ https://issues.asterisk.org/jira/browse/ASTERISK-21242?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Digium Subversion closed ASTERISK-21242.
----------------------------------------

    Resolution: Fixed
    
> Segfault when T.38 re-invite retransmission receives 200 OK
> -----------------------------------------------------------
>
>                 Key: ASTERISK-21242
>                 URL: https://issues.asterisk.org/jira/browse/ASTERISK-21242
>             Project: Asterisk
>          Issue Type: Bug
>      Security Level: None
>          Components: Resources/res_fax, Resources/res_fax_spandsp
>    Affects Versions: 11.2.1
>         Environment: CentOS 6.2 x86_64
>            Reporter: Ashley Winters
>            Assignee: Matt Jordan
>            Severity: Critical
>         Attachments: always-init-t38.patch, A_PARTY.xml, gdb-t38-retransmission-segfault.txt, t38-retransmission-segfault-debug.log, t38_uac_no_dcn.dump
>
>
> If res_fax falls back to audio after timing out on T.38 upgrade, and chan_sip continues retrying the re-INVITE, and the remote end responds to one of the retransmissions (after res_fax times out) with a 200 OK, a T.38 frame will be delivered to the res_fax_spandsp driver without the t38 subsystem being initialized.
> This results in a segfault.

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