Bugtraq mailing list archives

Re: calc.c, from jwa's sendmail exploit script


From: bj () lv426 cc purdue edu (Ben Jackson)
Date: Sun, 27 Mar 1994 16:29:54 -0500


In message <199403272021.PAA25783 () Collatz McRCIM McGill EDU>,
der Mouse <mouse () collatz mcrcim mcgill edu> wrote:

ObBugQ: Anyone know just what the SPARC integer divide bug is?  I've
got copies of the relevant kernel .o files both before and after the
patch, but haven't gotten around to disassembling and uncompiling
enough to figure out what's wrong yet.

Isn't this an old one?  I believe the problem is that the first few
instructions (?) of the SIGFPE handler run with the processor still
in supervisor mode.  Exploting that is left as an exercise for the
reader.

--Ben



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