[asterisk-bugs] [JIRA] (ASTERISK-22597) AST_LIST_INSERT_TAIL doesn't set field.next on added entry

[Rusty Newton (JIRA)]

Rusty Newton created ASTERISK-22597:
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             Summary: AST_LIST_INSERT_TAIL doesn't set field.next on added entry
                 Key: ASTERISK-22597
                 URL: https://issues.asterisk.org/jira/browse/ASTERISK-22597
             Project: Asterisk
          Issue Type: Bug
      Security Level: None
          Components: Functions/func_config
    Affects Versions: 11.5.1
         Environment: FreeBSD 9.1, i386
            Reporter: Brian Scott
            Assignee: Rusty Newton
            Severity: Minor


AST_LIST_INSERT_TAIL macro in include/asterisk/linkedlists.h doesn't set field.next to NULL when adding new entries to the tail of the list.
Multiple calls to AST_CONFIG (for different files) in the dialplan causes Asterisk to crash in func_config with a memory error.

Code appears to assume that malloc'ed memory would be initialised to NULL. This isn't a safe assumption on some systems (in this case FreeBSD).

A trivial patch is available or you can work out where the (elm)->field.next = NULL; goes for yourself.

Thanks

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