On Apr 17, 2016, at 7:34 AM, Joerg Sonnenberger <jo...@britannica.bec.de> wrote: > > while working on an update for my cvs2fossil tool, I was doing some > mistakes ^W^W^W fuzzing the output and able to reliably crash fossil. > In rebuild_step, blob_delta_apply is called without checking the return > value. If the delta is for some reason valid compressed data, but not a > valid delta, it returns directly and leaves next uninitialized. The > reassignment in the tail recursion part then corrupts pBase. The only > part I'm not sure is how to best deal with this.
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