[asterisk-bugs] [JIRA] (ASTERISK-22746) Crash in chan_dahdi during caller id read

[Michael Walton (JIRA)]

     [ https://issues.asterisk.org/jira/browse/ASTERISK-22746?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Michael Walton updated ASTERISK-22746:
--------------------------------------

    Attachment:     (was: chan_dahdi_cid_crash_fix.r401410.patch)
    
> Crash in chan_dahdi during caller id read
> -----------------------------------------
>
>                 Key: ASTERISK-22746
>                 URL: https://issues.asterisk.org/jira/browse/ASTERISK-22746
>             Project: Asterisk
>          Issue Type: Bug
>      Security Level: None
>          Components: Channels/chan_dahdi
>    Affects Versions: SVN, 1.8.17.0
>         Environment: Ubuntu 10.04
>            Reporter: Michael Walton
>
> Occasional Asterisk core dump during caller id read on analog channel. Further investigation and core dump analysis shows that a negative return value from the read() in my_get_callerid slips through as a negative length argument to callerid_feed() if the errno returned by DAHDI is ELAST. This would likely cause the crash.

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