[asterisk-bugs] [JIRA] (ASTERISK-24538) Crash in SDP sprintf

[Joshua Colp (JIRA)]

    [ https://issues.asterisk.org/jira/browse/ASTERISK-24538?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=223768#comment-223768 ] 

Joshua Colp commented on ASTERISK-24538:
----------------------------------------

Your fix is likely just covering something else up. The ast_sdp_crypto structure is allocated using ast_calloc. This zeros the allocated memory, which sets p->tag to NULL.

> Crash in SDP sprintf
> --------------------
>
>                 Key: ASTERISK-24538
>                 URL: https://issues.asterisk.org/jira/browse/ASTERISK-24538
>             Project: Asterisk
>          Issue Type: Bug
>      Security Level: None
>          Components: Channels/chan_sip/General
>    Affects Versions: 11.13.1, 11.14.1
>            Reporter: Badalian Vyacheslav
>            Assignee: Badalian Vyacheslav
>            Severity: Critical
>         Attachments: core.m1-asterisk01.tcsbank.ru-2014-11-18T18%3A46%3A15+0300.txt, core.m1-asterisk01.tcsbank.ru-2014-11-18T19%3A27%3A42+0300.txt, core.m1-asterisk01.tcsbank.ru-2014-11-19T13%3A03%3A47+0300.txt, sdp_fix.diff
>
>
> Today 3 crashes in one place
> Backtraces will be added bellow



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