Hacker News Reader

Comment by ezdiy | Hacker News Reader

Try dmesg.

I checked dmesg. It's clear that something bad happened, but I didn't get root. I don't really know what I'm looking at, I just ran arbitrary code on my least valuable machine trying to learn something.

Want me to pastebin it? edit:

It starts out

  [318258.327110] BUG: unable to handle kernel paging request at 0000001781ef7788
  [318258.328251] IP: [<ffffffff8108f1a5>] atomic_dec_and_mutex_lock+0x15/0x90
  [318258.328251] PGD 2b18b067 PUD 0 
  [318258.328251] Oops: 0000 [#4] SMP

Same here:

  Linux (redacted) 3.2.0-41-virtual #66-Ubuntu SMP Thu Apr 25 03:47:17 UTC 2013 x86_64 x86_64 x86_64 GNU/Linux

  [  413.309308] BUG: unable to handle kernel paging request at 0000001781eef4e8
  [  413.310359] IP: [<ffffffff8108d605>] atomic_dec_and_mutex_lock+0x15/0xa0
  [  413.311025] PGD 1c4ec067 PUD 0 
  [  413.311680] Oops: 0000 [#6] SMP 
  [  413.312007] CPU 0

Edit: disregard the timestamp above, VM has not synced with NTP for some time.

Frankly, I have to apologize I've never bothered with testing on ubuntu. That niche (workstations and small servers) is different beast for somebody else to bite.

So, the question is, are we safe this time? Or do we just need a better exploit code to be written for us? :)

just need better exploit code

citation needed

Reply on news.ycombinator.com