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Bug #68720 use-after-free
Submitted: 2015-01-02 08:57 UTC Modified: 2015-01-03 05:34 UTC
From: bugreports at internot dot info Assigned:
Status: Not a bug Package: XMLRPC-EPI related
PHP Version: 5.4Git-2015-01-02 (Git) OS: Linux Ubuntu 14.04
Private report: No CVE-ID: None
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 [2015-01-02 08:57 UTC] bugreports at internot dot info 
Description:
------------
Hi,

In /ext/xmlrpc/libxmlrpc/queue.c a use-after-free occurs:


542   free(iter);
[..]

547   if (q->cursor == (node*)iter) {


Thanks,

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 [2015-01-03 05:34 UTC] stas@php.net
-Status: Open +Status: Not a bug -Type: Security +Type: Bug
 [2015-01-03 05:34 UTC] stas@php.net 
It's not really use after free, since iter is never dereferenced, it is just compared to another pointer. As far as I can see, there's nothing dangerous in comparing pointer to pointer, even if the memory under that pointer was deallocated.
 
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