[asterisk-bugs] [JIRA] (ASTERISK-21209) crash in res_clialiases on reload

[Matt Jordan (JIRA)]

     [ https://issues.asterisk.org/jira/browse/ASTERISK-21209?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Matt Jordan updated ASTERISK-21209:
-----------------------------------

    Severity: Critical  (was: Blocker)
    
> crash in res_clialiases on reload
> ---------------------------------
>
>                 Key: ASTERISK-21209
>                 URL: https://issues.asterisk.org/jira/browse/ASTERISK-21209
>             Project: Asterisk
>          Issue Type: Bug
>      Security Level: None
>          Components: Resources/res_clialiases
>    Affects Versions: 11.2.1
>            Reporter: Jaco Kroon
>            Severity: Critical
>         Attachments: asterisk-11.2.1-res_clialiases-segfault.diff
>
>
> Not sure what triggered it, but I got a backtrace that crashed in the hash function for res_clialises, after some static analysis of the code I found that the load_config() function doesn't verify the result of ast_cli_register - which in the case of error de-allocates (it re-allocates cli_entry->command) cli_entry->command and then sets it to NULL, which in turn is used in the hash function to compute the hash.

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