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Stable kernels 5.1.1, 5.0.15, 4.19.42, 4.14.118 , and 4.9.175

Submitted by Rianne Schestowitz on Saturday 11th of May 2019 04:54:53 PM Filed under
Linux
  • Linux 5.1.1

    I'm announcing the release of the 5.1.1 kernel.

    All users of the 5.1 kernel series must upgrade.

    The updated 5.1.y git tree can be found at:
    git://git.kernel.org/pub/scm/linux/kernel/git/stable/linux-stable.git linux-5.1.y
    and can be browsed at the normal kernel.org git web browser:
    https://git.kernel.org/?p=linux/kernel/git/stable/linux-s...

  • Linux 5.0.15
  • Linux 4.19.42
  • Linux 4.14.118
  • Linux 4.9.175
»

Linux 5.1.1 Released With Few Fixes

Submitted by Roy Schestowitz on Saturday 11th of May 2019 07:16:07 PM.
  • Linux 5.1.1 Released With Few Fixes

    For those that wait until the first point release before switching over to a new stable series, Linux 5.1.1 is out this morning.

    Coming just under one week since the Linux 5.1 kernel debut, Linux 5.1.1 was issued today by stable maintainer Greg Kroah-Hartman.

Linux Kernel 5.1 Gets First Point Release...

Submitted by Rianne Schestowitz on Monday 13th of May 2019 01:50:45 PM.
  • Linux Kernel 5.1 Gets First Point Release, It's Now Ready for Mass Deployments

    Announced by Linus Torvalds on May 6th, the Linux 5.1 kernel series brings numerous new features and improvements, among which we can mention better file system monitorization, new cpuidle governor called TEO, support for configuring Zstd compression levels in Btrfs, and the ability to boot to a device-mapper device without using initramfs.

    Linux kernel 5.1 also adds support for cumulative patches in live kernel patching, the ability to use persistent memory as RAM, faster and more scalable asynchronous I/O, support for delivering safe signals in presence of PID reuse, more preparations for the year 2038, and lots of new and updated drivers.

More kernel

Submitted by Roy Schestowitz on Tuesday 14th of May 2019 04:44:31 AM.
  • Linux 5.1 Released with Memory and Security Improvements

    Linus Torvalds has finally released the stable version of Linux Kernal 5.1 after almost 13,000 commits. Though the codename ‘Shy Crocodile’ remained with the latest version, it brings some major improvements and a lot of new features.

    According to Phoronix, Linux 5.1 contains 17.8 million lines of code and 3.3 million lines of comments. ”On the whole, 5.1 looks very normal with just over 13k commits (plus another 1k+ if you count merges), which is pretty much our normal size these days,“ said Linus Torvalds.

    Linux 5.1 arrived a bit late as compared to other releases due to some last-minute pull requests. “The requests weren’t big enough to justify delaying things over, and hopefully, the merge window timing won’t be all that painful either,” wrote Linus.

  • Linux Kernel Prior to 5.0.8 Vulnerable to Remote Code Execution

    Linux machines running distributions powered by kernels prior to 5.0.8 are affected by a race condition vulnerability leading to a use after free, related to net namespace cleanup, exposing vulnerable systems to remote attacks.

    Potential attackers could exploit the security flaw found in Linux kernel's rds_tcp_kill_sock TCP/IP implementation in net/rds/tcp.c to trigger denial-of-service (DoS) states and to execute code remotely on vulnerable Linux machines.

    The attacks can be launched with the help of specially crafted TCP packets sent to vulnerable Linux boxes which can trigger use-after-free errors and enable the attackers to execute arbitrary code on the target system.

Linux Kernel Can Be Exploited Remotely; Kernel Prior To 5.0.8

Submitted by Roy Schestowitz on Tuesday 14th of May 2019 11:11:24 AM.
  • Linux Kernel Can Be Exploited Remotely; Kernel Prior To 5.0.8 Affected

    We keep coming across various security loopholes in different software on a daily basis, but it rarely happens that Linux kernel gets crippled by a high-impact flaw. However, things are looking a bit different today as millions of Linux systems have been found to be affected by a massive flaw.

    It’s being reported that the kernel versions prior to 5.0.8 are affected by a race condition vulnerability. For those who aren’t aware, race condition attacks take place when a system designed to perform tasks in a particular sequence is made to perform two or more operations simultaneously. During this state, interference could be caused by a trusted/untrusted process.

Linux hit by use-after-free vulnerability

Submitted by Roy Schestowitz on Tuesday 14th of May 2019 12:01:18 PM.
  • Linux hit by use-after-free vulnerability

    Linux users are being warned of a vulnerability in versions of the kernel prior to 5.0.8 which allows for an attacker to issue a denial-of-service attack or potentially execute arbitrary code remotely.

    The Linux kernel, at the heart of the operating system family which bears its name, is one of the most widespread pieces of software in history. As well as powering everything from desktops to games consoles, it can be found on routers, gateways, firewalls, and even smart home devices like lightbulbs and thermostats. A vulnerability in Linux, then, is serious business - and this latest discovery affects every version prior to the most recent 5.0.8 release.

    Published as CVE-2019-11815, the vulnerability relates to a TCP socket closure function in the kernel's networking code: A race condition allows for a use-after-free attack, giving a sufficiently motivated attacker the ability to crash or hang the system or potentially even execute arbitrary code without the need for user interaction. It's a flaw serious enough for the US National Institute of Standards and Technology (NIST) to issue an 8.1 score on its impact severity ranking, though the complexity of actually exploiting the vulnerability drops its impact score down to 2.2.

    Nevertheless, the flaw is a serious one - and made doubly so by the fact it has existed for such a long time and affects such a long list of kernel versions. With many products, especially in the smart home arena, being effectively sell-and-forget, there are likely to be vulnerable systems out there for years to come - and if the complexity of successful remote exploitation can be overcome, that could spell trouble.

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