[Mesa-dev] [PATCH] glu: src/libtess: memory has been freed using uninitialized pointer

Brian Paul brianp at vmware.com
Wed Jan 2 12:38:43 PST 2013

On 12/19/2012 11:26 PM, Mike Gorchak wrote:
> Hi !
> I've attached the patch which fixes access to unitialized pointer
> during memory free operation.
> pqNewPriorityQ() function creates and setups PriorityQ structure, all
> except for the field "order". It is filled later in function pqInit().
> Depending on vertices of polygon which must be tesselated there
> possible following situation, pqDeletePriorityQ() is called right
> after pqNewPriorityQ() function. pqNewPriorityQ() tries to free memory
> using pq->order as pointer, which is unitialized at this point.
> P.S. Bug has been found by Victor Magalhaes while using my port of GLU
> library to OpenGL ES ( http://code.google.com/p/glues/ ). My port was
> based on the latest MESA/GLU sources.

Looks good to me.  I'll commit this to the GLU git tree soon...


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