CloudLinux OS Blog - CloudLinux 7 and CloudLinux 6 Hybrid kernel updated
CloudLinux OS Blog

CloudLinux 7 and CloudLinux 6 Hybrid kernel updated

CloudLinux 7 and CloudLinux 6 Hybrid kernel updated

CloudLinux 7 and CloudLinux 6 Hybrid kernel version 3.10.0-962.3.2.lve1.5.24.4 based on Red Hat kernel version 3.10.0-862.11.6 is now available for download from our production repository.

Changelog:

Security Fixes:

  • CVE-2018-3620, CVE-2018-3646. Modern operating systems implement virtualization of physical memory to efficiently use available system resources and provide inter-domain protection through access control and isolation. The L1TF issue was found in the way the x86 microprocessor designs have implemented speculative execution of instructions (a commonly used performance optimisation) in combination with handling of page-faults caused by terminated virtual to physical address resolving process. As a result, an unprivileged attacker could use this flaw to read privileged memory of the kernel or other processes and/or cross guest/host boundaries to read host memory by conducting targeted cache side-channel attacks.
  • CVE-2018-3693. An industry-wide issue was found in the way many modern microprocessor designs have implemented speculative execution of instructions past bounds check. The flaw relies on the presence of a precisely-defined instruction sequence in the privileged code and the fact that memory writes occur to an address which depends on the untrusted value. Such writes cause an update into the microprocessor's data cache even for speculatively executed instructions that never actually commit (retire). As a result, an unprivileged attacker could use this flaw to influence speculative execution and/or read privileged memory by conducting targeted cache side-channel attacks.
  • CVE-2018-5390. A flaw named SegmentSmack was found in the way the Linux kernel handled specially crafted TCP packets. A remote attacker could use this flaw to trigger time and calculation expensive calls to tcp_collapse_ofo_queue() and tcp_prune_ofo_queue() functions by sending specially modified packets within ongoing TCP sessions which could lead to a CPU saturation and hence a denial of service on the system. Maintaining the denial of service condition requires continuous two-way TCP sessions to a reachable open port, thus the attacks cannot be performed using spoofed IP addresses.
  • CVE-2017-13215. Kernel: crypto: privilege escalation in skcipher_recvmsg function.
  • CVE-2018-10675. Kernel: mm: use-after-free in do_get_mempolicy function allows local DoS or other unspecified impact.
  • CVE-2018-7566. Kernel: race condition in snd_seq_write() may lead to UAF or OOB access.
  • CLKRN-362. virtio_balloon: fixed another race between migration and ballooning.
  • CLKRN-343. Restored cond_resched() behavior.

To update a kernel, please use the following command.

CloudLinux 7:

yum install kernel-3.10.0-962.3.2.lve1.5.24.4.el7

CloudLinux 6 Hybrid:

yum install kernel-3.10.0-962.3.2.lve1.5.24.4.el6h
mod_lsapi updated
Beta: MariaDB for MySQL Governor updated
 

Comments 2

Guest - George on Saturday, 24 November 2018 20:41

On a server that is currently running 3.10.0-714.10.2.lve1.5.19.8.el6h.x86_64 I can't upgrade to the hybrid kernel, because I'm getting:

No package kernel-3.10.0-962.3.2.lve1.5.24.4.el6h available.

On a server that is currently running 3.10.0-714.10.2.lve1.5.19.8.el6h.x86_64 I can't upgrade to the hybrid kernel, because I'm getting: No package kernel-3.10.0-962.3.2.lve1.5.24.4.el6h available.
Guest - George on Saturday, 24 November 2018 20:54

Never mind, it worked after a yum clean all.

Never mind, it worked after a yum clean all.
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Monday, 25 March 2019

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