Messages in this thread |  | | | Date | Tue, 21 Sep 2004 13:19:00 +0200 | | From | Pavel Machek <> | | Subject | Re: ESP corruption bug - what CPUs are affected? |
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Hi!
> >for subsequent push/pop/call/ret operations. > >But if code uses full ESP, thinking that upper 16 bits are zero, > >it will crash badly. Correct me if I'm wrong. > That's correct. But you should note that the > program not just "thinks" that the upper 16 bits > are zero. It writes zero there itself, and a few > instructions later - oops, it is no longer zero...
Hmm, perhaps this can also be viewed as a "information leak"? Program running under dosemu is not expected to know high bits of kernel %esp... Pavel -- People were complaining that M$ turns users into beta-testers... ...jr ghea gurz vagb qrirybcref, naq gurl frrz gb yvxr vg gung jnl! - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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