On Tue, Sep 10, 2013 at 10:19:17PM -0700, Kees Cook wrote: > In the former case, format characters will get processed by the > sprintf logic. In the latter, they are printed as-is. In this specific > case, if there was a way to inject strings like "ohai %n" into the > msgbuf string, the former would actually attempt to resolve the %n. In > the simple case, this could lead to Oopses, and in the unlucky case, > it could allow arbitrary memory writing and execution control. > > http://en.wikipedia.org/wiki/Uncontrolled_format_string The kernel ignores %n so hopefully it can't actually write to memory. regards, dan carpenter _______________________________________________ devel mailing list devel@xxxxxxxxxxxxxxxxxxxxxx http://driverdev.linuxdriverproject.org/mailman/listinfo/driverdev-devel
