The following upstream patch fixes canonical checking for segment registers in
ptrace. This allowed user programs to set a non canonical segment which would
cause oopses in the kernel later.
I meant "Not a dupe"
Created attachment 117053 [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.