Linux kernel exploits

linux kernel exploits

However, it was written to use Google App Engine, and my team has their processes predominately in Azure and AWS. A few searches quickly turned up a PagerDuty blog where David Hayes had done exactly this. I didn’t want to introduce yet another set of cloud services, for something conceptually so simple.

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  Finally I conclude that this lack of ecosystem control is no bar to strong governance, since that can be enforced by any contributor through the copyright mechanism, and the very lack of control is what keeps the commit agency correctly serving the community. In the first part I concluded that the GPL fostered the best ecosystem between developers, corporations and users by virtue of the essential ecosystem fairness it engenders.   In this part I conclude that formal control structures are actually detrimental to a developer driven community and thus the best structural mechanism is pure GPL+DCO with no additional formality.

As a result, systems without the SMEP CPU feature (before Ivy-Bridge) get it emulated for “free”. An nice additional benefit of the recent Kernel Page Table Isolation (CONFIG_PAGE_TABLE_ISOLATION) patches (to defend against CVE-2017-5754, the speculative execution “rogue data cache load” or “Meltdown” flaw) is that the userspace page tables visible while running in kernel mode lack the executable bit.

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Those who have known me over several decades might be surprised by this purchase, but what old man could resist a book whose flyleaf states “Anyone embarking on a creative path, he tells us, would do well to realize that pragmatism and discipline are as important as talent and that rejection is nothing to fear. Me, I would omit the word “political”, but close enough. See, I am making trouble already. ” Not really any different from my “Go where there is trouble. “Keep up with what’s causing chaos in your field. ” Not really any different from my advising people to use the “high-school boy” algorithm when submitting papers and proposals. After all, who could fail to notice a small pink book with large white textured letters saying “Make Trouble”. This book, by John Waters of “Hairspray” fame, was an impulse purchase. The book is mostly pictures, so if you are short of money, you do have the option of just reading it in the bookstore. For but three examples:
“A career in the arts is like a hitchhiking trip: All you need is one person to say ‘get in,’ and off you go. It is a transcription of Waters’s commencement address to the Rhode Institute School of Design’s Class of 2015. ”
“Listen to your political enemies, particularly the smart ones”. ”

They might be even more surprised that I agree with much of his advice.

There are still many issues to resolve, both upstream and at the distro/user level, and I expect this to be an active area of Linux security development for some time.   There were some excellent followup discussions in this area, including an approach which constrains the problem space.

It is easy to compile and. How to compile linux kernel in Debian / Ubuntu the Easy Way Tutorials Nov 14, 2013 , by. New Linux Kernel Zero day Exploit Vulnerability CVE-2016-0728 News. New Linux Kernel Zero day Exploit Vulnerability CVE-2016-0728 The PPR research team.

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  Open Source on the other hand, to me, means that you follow all the rules of the project (usually licensing and contribution requirements) but don’t necessarily sign up to the philosophy underlying the project (if there is one; most Open Source projects won’t have one).   While this isn’t problematic for many developers (code freedom, of course, is what enables developer driven communities) it is an anathema to most corporations and in particular their lawyers because, generally applied, it would require the release of all software based intellectual property.   Rather than review them, in the spirit of Humpty Dumpty, I’ll give you mine: Free Software, to me, means espousing a set of underlying beliefs about the code (for instance the four freedoms of the FSF). There have been many definitions of both of these.

With the easy-to-use interface, users can engage colleagues, friends, partners or customers, working in real time through High Definition (H265 based) audio and video in web meetings and webinars. Nextcloud has announced Nextcloud Talk, a fully open source video meeting software that is on-premise hosted and end-to-end encrypted. Business users have optional access to the Spreed High Performance Back-end offering enterprise-class scalability, reliability, and features through a Nextcloud subscription. “Nextcloud Talk makes it easier than ever to host a privacy-respecting audio/video communication service for home users and enterprises.

In fact, by the end of the day, the steam pressure had dropped by half, resulting in great consternation and annoyance all around. The steam pressure to the rest of the fair continued to decrease until it was but 15 PSI. It is all too easy to imagine a roughly similar story unfolding in today’s world. Porter’s stone-facing machine was instead powered by modern steam engines. Restarting the steam engines of course reduced the pressure, but at 5PM it was still 25 PSI. The engines were small by 1870s standards, one having 16-inch diameter cylinders with a 30-inch stroke and the other having 6-inch diameter cylinders with a 12-inch stroke. Porter therefore closed his valve, with the result that the steam pressure within his little steam network immediately rose to 70 PSI and the pressure to the rest of the network dropped to 25 PSI. All the boilers and steam engines where connected, but given that steam engines were, then as now, considered to be way cooler than mere boilers, it should not be too surprising that the boilers could not produce enough steam to keep all the engines running. Porter’s most prominent contribution was the high-speed steam engine, that is to say, a steam engine operating at more than about 100 RPM. At about that same time, he became quite interested in the problem of facing stone, that is, producing a machine that would take a rough-cut stone and give it a smooth planar face (smooth by the standards of the mid-1800s, anyway). Other exhibitors also had boilers and steam engines, and yet other exhibitors had equipment driven by steam engines. This novel is informed by Zeigler’s application of Cold War remote-sensing technology to interesting areas of the Italian landscape, a fact that I had the privilege of learning directly from Zeigler himself. Unfortunately, at about that same time, others realized that saws could even more efficiently face stone, so his invention was what we might now call a technical success and a business failure. The superintendent of the machinery department had repeatedly asked Porter to reopen the valve, but each time Porter had refused. And yes, all of the qualifiers in the preceding sentence are necessary. The boiler ran slanted water tubes through the firebox to more efficiently separate steam from the remaining water. He was a lawyer for several years, but became disgusted with legal practice. As we learn more about ancient civilizations, it will be interesting to see what other “modern inventions” turn out to have deep roots in ancient times. The finger of suspicion quickly pointed at Porter’s two high-speed steam engines—after all, great speed clearly must imply equally great consumption of steam, right. This is one of many interesting nuggets on life in the Roman Empire brought out by the historical novel “Tears of Stone” by Vannoy and Zeiglar. ;–)

Porter went on to develop steam engines capable of running well in excess of 1,000 RPM, with one key challenge being convincing onlookers that the motion-blurred engine really was running that fast. Oddly enough, we have recently learned that the application of saws to stone was not an invention of the mid-1800s, but rather a re-invention of a technique used heavily in the ancient Roman Empire, and suspected of having been used as early as the 13th century BC. After a couple of years of experimentation, he produced a steam-powered machine that efficiently faced stone. Porter had anticipated this situation, and had therefore installed a shutoff valve that isolated the boiler and his two high-speed steam engines from the rest of the Fair’s equipment. At 5PM, the superintendent made it clear that his request was now a demand, and that if Porter would not open the valve, the superintendent would open it for him. I believe that Charles T. On the other hand, perhaps Porter’s ghost can console himself with the fact that the earliest stone saws were hand-powered, and those of the Roman Empire were water powered. Over the noon hour, an additional boiler was installed, which brought the pressure up to 70 PSI. Yes, the ancient Egyptians also made some use of steam power, but as far as we know they never applied it industrially, and never via a reciprocating engine driving a rotary shaft. Chapter XVII starting on page 189 describes a demonstration of two of his new high-speed steam engines (on operating at 150 RPM the other at 300 RPM) along with one of his colleague’s new boilers at the 1870 Fair of the American Institute in New York. Porter opened the valve, and there was no further trouble with low-pressure steam. In fact, the boiler generated excess steam even at 70 PSI, so that the fireman had to leave the firebox door slightly open to artificially lower the boiler temperature. Although steam engines and their governors proved to be somewhat of a dead end, some of his dynamic balancing techniques are still in use. Porter’s “Engineering Reminiscences“ was a gift from my grandfather, who was himself a machinist. These managers were summoned forthwith, and they agreed that the boiler had been producing most of the show’s steam and that the pair of high-speed steam engines had been consuming very little. Porter finally agreed to open the valve, but only on the condition that the other managers of the institute verify that the boiler was in fact generating more than enough steam for both engines. Interestingly enough, steam engines were Porter’s third career. Technology changes, people and organizations not so much.

Also, my (former) colleague DaveJ (who’s now consumed by Facebook — I remember complaints about useful people “gone to Google and never heard from again”, but Facebook is the same hole nowadays) once said, approximately: “Everyone loves to crap on Gentoo hackers for silly optimizations and being otherwise unprofessional, but when it’s something interesting it’s always (or often) them. ” Gentoo crew is underrated, including their userbase.

Once again we were fortunate to have general logistics managed by the Linux Foundation, allowing the program committee to focus on organizing technical content.   Attendance was very strong, with ~160 attendees — another record for the event.   We had a record number of submissions this year and accepted approximately one third of them.

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