[asterisk-bugs] [JIRA] (ASTERISK-23573) Crash when transferring unbridged call

[Mark Michelson (JIRA)]

     [ https://issues.asterisk.org/jira/browse/ASTERISK-23573?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Mark Michelson updated ASTERISK-23573:
--------------------------------------

    Affects Version/s: 12.1.1

> Crash when transferring unbridged call
> --------------------------------------
>
>                 Key: ASTERISK-23573
>                 URL: https://issues.asterisk.org/jira/browse/ASTERISK-23573
>             Project: Asterisk
>          Issue Type: Bug
>      Security Level: None
>    Affects Versions: 12.1.1
>            Reporter: Mark Michelson
>         Attachments: ASTERISK-23573-bt.txt
>
>
> The way I produced this crash was on  a Switchvox development system, but the circumstances should be replicable on any Asterisk box. I called a busy extension from a Digium phone and was directed to voicemail. When the voicemail greeting started playing, I accidentally pressed the "Park" button on my Digium phone instead of the "End call" button. The result was a crash in Asterisk.
> The problem appears to be that a stasis app that was subscribed to bridge events made the assumption that a blind transfer event would always have a non-NULL bridge snapshot with it. However, for blind transfer failures (especially those due to the fact that there is no bridge), this assumption cannot be made. The stasis code needs to be made NULL-safe with regards to bridge snapshots on all types of transfers.



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