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Ubuntu 17.10 USN-3697-1 Critical: Kernel Security Issues Report

ubuntu
Calendar Grey July 2, 2018
Dist Ubuntu Esm H88
Multiple vulnerabilities addressed in the Ubuntu 17.10 kernel. Users advised to apply updates swiftly to mitigate risks.
Several security issues were fixed in the Linux kernel.

Summary

Several security issues were fixed in the Linux kernel.

Software Description:

- linux: Linux kernel

- linux-raspi2: Linux kernel for Raspberry Pi 2

Details:

It was discovered that a null pointer dereference vulnerability existed in

the DCCP protocol implementation in the Linux kernel. A local attacker

could use this to cause a denial of service (system crash). (CVE-2018-1130)

Jann Horn discovered that the 32 bit adjtimex() syscall implementation for

64 bit Linux kernels did not properly initialize memory returned to user

space in some situations. A local attacker could use this to expose

sensitive information (kernel memory). (CVE-2018-11508)

Wang Qize discovered that an information disclosure vulnerability existed

in the SMBus driver for ACPI Embedded Controllers in the Linux kernel. A

local attacker could use this to expose sensitive information (kernel

pointer addresses). (CVE-2018-5750)

It was discovered that the SCTP Protocol implementation in the Linux kernel

did not pr...

Read the Full Advisory

Topics%20covered

Topics Covered

security advisory denial of service critical kernel ubuntu

Update Instructions

The problem can be corrected by updating your system to the following
package versions:

Ubuntu 17.10:
  linux-image-4.13.0-1023-raspi2  4.13.0-1023.24
  linux-image-4.13.0-46-generic   4.13.0-46.51
  linux-image-4.13.0-46-generic-lpae  4.13.0-46.51
  linux-image-4.13.0-46-lowlatency  4.13.0-46.51
  linux-image-generic             4.13.0.46.49
  linux-image-generic-lpae        4.13.0.46.49
  linux-image-lowlatency          4.13.0.46.49
  linux-image-raspi2              4.13.0.1023.21

After a standard system update you need to reboot your computer to make
all the necessary changes.

ATTENTION: Due to an unavoidable ABI change the kernel updates have
been given a new version number, which requires you to recompile and
reinstall all third party kernel modules you might have installed.
Unless you manually uninstalled the standard kernel metapackages
(e.g. linux-generic, linux-generic-lts-RELEASE, linux-virtual,
linux-powerpc), a standard system upgrade will automatically perform
this as well.

References

https://ubuntu.com/security/notices/USN-3697-1

CVE-2018-1130, CVE-2018-11508, CVE-2018-5750, CVE-2018-5803,

CVE-2018-6927, CVE-2018-7755, CVE-2018-7757

Severity
critical
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Critical

July 02, 2018

Topics%20covered

Topics Covered

security advisory denial of service critical kernel ubuntu

Package Information

https://launchpad.net/ubuntu/+source/linux/4.13.0-46.51
https://launchpad.net/ubuntu/+source/linux-raspi2/4.13.0-1023.24

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