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Ubuntu 16.04 ESM: 5540-1 Critical: Multiple Kernel Security Issues

ubuntu
Calendar Grey July 28, 2022
Dist Ubuntu Esm H88
Recent vulnerabilities discovered in particular Ubuntu kernel versions necessitate immediate patches; safeguard your machine against potential local exploits.
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-aws: Linux kernel for Amazon Web Services (AWS) systems

- linux-kvm: Linux kernel for cloud environments

- linux-lts-xenial: Linux hardware enablement kernel from Xenial for Trusty

Details:

Liu Jian discovered that the IGMP protocol implementation in the Linux

kernel contained a race condition, leading to a use-after-free

vulnerability. A local attacker could use this to cause a denial of service

(system crash) or possibly execute arbitrary code. (CVE-2022-20141)

It was discovered that the USB gadget subsystem in the Linux kernel did not

properly validate interface descriptor requests. An attacker could possibly

use this to cause a denial of service (system crash). (CVE-2022-25258)

It was discovered that the Remote NDIS (RNDIS) USB gadget implementation in

the Linux kernel did not properly validate the size of the RNDIS_MSG_SET

command. An attacker could possibly use thi...

Read the Full Advisory

Topics%20covered

Topics Covered

security advisory denial of service security issue Ubuntu kernel local attack critical flaw

Update Instructions

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

Ubuntu 16.04 ESM:
  linux-image-4.4.0-1111-kvm      4.4.0-1111.121
  linux-image-4.4.0-1146-aws      4.4.0-1146.161
  linux-image-4.4.0-230-generic   4.4.0-230.264
  linux-image-4.4.0-230-lowlatency  4.4.0-230.264
  linux-image-aws                 4.4.0.1146.150
  linux-image-generic             4.4.0.230.236
  linux-image-kvm                 4.4.0.1111.108
  linux-image-lowlatency          4.4.0.230.236
  linux-image-virtual             4.4.0.230.236

Ubuntu 14.04 ESM:
  linux-image-4.4.0-1110-aws      4.4.0-1110.116
  linux-image-4.4.0-230-generic   4.4.0-230.264~14.04.1
  linux-image-4.4.0-230-lowlatency  4.4.0-230.264~14.04.1
  linux-image-aws                 4.4.0.1110.107
  linux-image-generic-lts-xenial  4.4.0.230.200
  linux-image-lowlatency-lts-xenial  4.4.0.230.200
  linux-image-virtual-lts-xenial  4.4.0.230.200

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-5540-1

CVE-2022-20141, CVE-2022-25258, CVE-2022-25375, CVE-2022-34918

Severity
critical
Lowest
Low
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Critical

July 28, 2022

Topics%20covered

Topics Covered

security advisory denial of service security issue Ubuntu kernel local attack critical flaw

Package Information

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