On Mon, Jun 25, 2018 at 06:34:10PM +0200, Jann Horn wrote: > + char tmp[32]; > > - if (namelen > 32) > + if (namelen < 0 || namelen > 32) > namelen = 32; > > down_read(&uts_sem); > kname = utsname()->domainname; > len = strnlen(kname, namelen); > - if (copy_to_user(name, kname, min(len + 1, namelen))) > - err = -EFAULT; > + len = min(len + 1, namelen); > + memcpy(tmp, kname, len); > up_read(&uts_sem); > > - return err; > + if (copy_to_user(name, tmp, len)) > + return -EFAULT;
Infoleak, and similar in a lot of other places. -- To unsubscribe from this list: send the line "unsubscribe linux-alpha" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html
