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Ubuntu 16.04 ESM: USN-5505-1 Critical: Kernel Use-After-Free Issues

ubuntu
Calendar Grey July 7, 2022
Dist Ubuntu Esm H88
Address numerous kernel weaknesses via Ubuntu patch USN-5505-1 to enhance both system security and efficiency.
Several security issues were fixed in the Linux kernel.

Summary

Several security issues were fixed in the Linux kernel.

Software Description:

- linux-kvm: Linux kernel for cloud environments

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

Details:

Norbert Slusarek discovered a race condition in the CAN BCM networking

protocol of the Linux kernel leading to multiple use-after-free

vulnerabilities. A local attacker could use this issue to execute arbitrary

code. (CVE-2021-3609)

Likang Luo discovered that a race condition existed in the Bluetooth

subsystem of the Linux kernel, 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-2021-3752)

It was discovered that the NFC subsystem in the Linux kernel contained a

use-after-free vulnerability in its NFC Controller Interface (NCI)

implementation. A local attacker could possibly use this to cause a denial

of service (system crash) or execute a...

Read the Full Advisory

Topics%20covered

Topics Covered

security advisory denial of service critical kernel arbitrary code ubuntu use-after-free

Update Instructions

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

Ubuntu 16.04 ESM:
  linux-image-4.4.0-1110-kvm      4.4.0-1110.120
  linux-image-kvm                 4.4.0.1110.107

Ubuntu 14.04 ESM:
  linux-image-4.4.0-229-generic   4.4.0-229.263~14.04.1
  linux-image-4.4.0-229-lowlatency  4.4.0-229.263~14.04.1
  linux-image-generic-lts-xenial  4.4.0.229.199
  linux-image-lowlatency-lts-xenial  4.4.0.229.199
  linux-image-virtual-lts-xenial  4.4.0.229.199

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

CVE-2021-3609, CVE-2021-3752, CVE-2021-3760, CVE-2021-39685,

CVE-2021-39714, CVE-2021-4197, CVE-2021-4202, CVE-2022-0330,

CVE-2022-1353, CVE-2022-1419, CVE-2022-1652, CVE-2022-1679,

CVE-2022-1734, CVE-2022-21123, CVE-2022-21125, CVE-2022-21166,

CVE-2022-24958, CVE-2022-28356, CVE-2022-28388

Severity
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Critical

July 07, 2022

Topics%20covered

Topics Covered

security advisory denial of service critical kernel arbitrary code ubuntu use-after-free

Package Information

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