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Ubuntu Security Notice USN-5540-1

Ubuntu Security Notice 5540-1 - 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 or possibly execute arbitrary code. 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.

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Ubuntu Security Notice USN-5540-1
July 28, 2022

linux, linux-aws, linux-kvm, linux-lts-xenial vulnerabilities

A security issue affects these releases of Ubuntu and its derivatives:

  • Ubuntu 16.04 ESM
  • Ubuntu 14.04 ESM

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 this to expose sensitive
information (kernel memory). (CVE-2022-25375)

Arthur Mongodin discovered that the netfilter subsystem in the Linux kernel
did not properly perform data validation. A local attacker could use this
to escalate privileges in certain situations. (CVE-2022-34918)

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

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