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I checked my Ubuntu PC for dirtycow vulnerability, by using following code I downloaded from here. I compiled and run this code and run.When i execute this code using cc .

$ gcc cowroot.c -o cowroot -pthread
$./cowroot

It's got root access, but after few sec it freeze my Ubuntu. According this vulnerability, it only give root access, not freeze the system.

But it freeze my system. This is why i posted this question here

More details: my arch:x86_64

closed as unclear what you're asking by Steffen Ullrich, Stephane, Anders, techraf, Mark Buffalo Oct 24 '16 at 8:21

Please clarify your specific problem or add additional details to highlight exactly what you need. As it's currently written, it’s hard to tell exactly what you're asking. See the How to Ask page for help clarifying this question. If this question can be reworded to fit the rules in the help center, please edit the question.

  • You should probably add an actual question what you want to know, and much more details. If you want to freezing issue solved, you'll likely be required to provide a crashdump or kernel dump, which might not be an easy thing to fetch (and seems out of scope for Stack Exchange anyway). – Jens Erat Oct 24 '16 at 11:11
  • flashpoint-intel.com/analysis-dirtycow-kernel-exploit seems to indicate that the two dirty cow exploit programs they tested, including cowroot.c, will typically crash the kernel after a few minutes. So your experience is not unique to you – infixed Oct 25 '16 at 14:45
  • @JensErat I want to know why my system hang during , cow exploit vulnerbility testing process.That is my actual question.You already ask for kernel dump or crash dump , I used linux-crash with this instruction linux-crash. But it was not generated any dump on /var/crash.Do you have any idea – SuperKrish Oct 26 '16 at 6:22
  • @infixed yes my experience not unique, But i want to know why it happen.Anyway thanks for sharing above link, It very useful to me. – SuperKrish Oct 26 '16 at 6:24
  • I'm sorry, I cannot really help you with that issue. Anyway, as I already noted I don't think this is really in scope for Stack Exchange, being very specific for a single system and too broad (and this seems also the opinion of the others having voted to close the question). – Jens Erat Oct 26 '16 at 6:25

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