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Ubuntu 16.04: USN-5883-1 High: Linux Kernel HWE Multiple Issues

ubuntu
Calendar Grey February 22, 2023
Dist Ubuntu Esm H88
A range of security issues highlighted in Ubuntu Security Bulletin USN-5883-1 involves memory corruption errors and service disruptions.
Several security issues were fixed in the Linux kernel.

Summary

Several security issues were fixed in the Linux kernel.

Software Description:

- linux-hwe: Linux hardware enablement (HWE) kernel

Details:

Kyle Zeng discovered that the sysctl implementation in the Linux kernel

contained a stack-based buffer overflow. A local attacker could use this to

cause a denial of service (system crash) or execute arbitrary code.

(CVE-2022-4378)

It was discovered that an out-of-bounds write vulnerability existed in the

Video for Linux 2 (V4L2) implementation in the Linux kernel. A local

attacker could use this to cause a denial of service (system crash) or

possibly execute arbitrary code. (CVE-2022-20369)

Pawan Kumar Gupta, Alyssa Milburn, Amit Peled, Shani Rehana, Nir Shildan

and Ariel Sabba discovered that some Intel processors with Enhanced

Indirect Branch Restricted Speculation (eIBRS) did not properly handle RET

instructions after a VM exits. A local attacker could potentially use this

to expose sensitive information. (CVE-2022...

Read the Full Advisory

Topics%20covered

Topics Covered

security advisory denial of service buffer overflow Ubuntu high local attack Linux kernel

Update Instructions

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

Ubuntu 16.04 ESM:
  linux-image-4.15.0-206-generic  4.15.0-206.217~16.04.1+1
  linux-image-4.15.0-206-lowlatency  4.15.0-206.217~16.04.1+1
  linux-image-generic-hwe-16.04   4.15.0.206.191
  linux-image-lowlatency-hwe-16.04  4.15.0.206.191
  linux-image-oem                 4.15.0.206.191
  linux-image-virtual-hwe-16.04   4.15.0.206.191

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-5883-1

CVE-2022-20369, CVE-2022-26373, CVE-2022-2663, CVE-2022-29900,

CVE-2022-29901, CVE-2022-3521, CVE-2022-3545, CVE-2022-3628,

CVE-2022-3640, CVE-2022-3646, CVE-2022-3649, CVE-2022-39842,

CVE-2022-41849, CVE-2022-41850, CVE-2022-42328, CVE-2022-42895,

CVE-2022-43750, CVE-2022-4378, CVE-2023-0461

February 22, 2023

Topics%20covered

Topics Covered

security advisory denial of service buffer overflow Ubuntu high local attack Linux kernel

Package Information

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