Red Hat Bugzilla – Bug 159921
CAN-2005-1763 x86_64 crash (x86_64-ptrace-overflow)
Last modified: 2007-11-30 17:07:18 EST
There was a "off by one quad word" error in x86_64 ptrace. This was originally
thought to be unexploitable because it will only store into a unused area, but
better to plug it. However Andi Kleen stated that it allows a write to a word
40 bytes into the page above the kernel stack of a process which may be exploitable.
Created attachment 117054 [details]
An advisory has been issued which should help the problem
described in this bug report. This report is therefore being
closed with a resolution of ERRATA. For more information
on the solution and/or where to find the updated files,
please follow the link below. You may reopen this bug report
if the solution does not work for you.