[asterisk-bugs] [JIRA] (ASTERISK-27568) Crash in ast_channel_hangupcause when using chan_pjsip

[Bryan Walters (JIRA)]

Bryan Walters created ASTERISK-27568:
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             Summary: Crash in ast_channel_hangupcause when using chan_pjsip
                 Key: ASTERISK-27568
                 URL: https://issues.asterisk.org/jira/browse/ASTERISK-27568
             Project: Asterisk
          Issue Type: Bug
      Security Level: None
          Components: Channels/chan_pjsip
    Affects Versions: 13.18.5
            Reporter: Bryan Walters


We've had reports from users of Asterisk 13.18.5 where asterisk will core dump pretty frequently when using chan_pjsip. Reviewing this with our team, it appears that that chan_pjsip_session_end checks session->channel for validity and later calls ast_channel_hangupcause(session->channel). However, between the time of the check and the call to ast_channel_hangupcause, something is setting session->channel to null, thus causing Asterisk to core dump.



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