lkml.org 
[lkml]   [2010]   [Oct]   [27]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
    /
    Date
    From
    SubjectRe: situation with signals
    On Wed, Oct 27, 2010 at 06:51:12PM -0400, Chris Metcalf wrote:

    > > BTW, is everything in your pt_regs safe to modify?
    >
    > What an interesting observation. :-) In fact, it would be possible to
    > overwrite the privilege level (the ex1 register) from within the signal
    > handler and then return to run arbitrary code at kernel PL. I'll fix it.

    Then you need to be careful with that in your ptrace as well (POKEUSR and
    SETREGS).


    \
     
     \ /
      Last update: 2010-10-28 01:33    [W:0.032 / U:0.904 seconds]
    ©2003-2016 Jasper Spaans. hosted at Digital OceanAdvertise on this site