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Ubuntu 22.04 LTS USN-6415-1 Critical: Kernel Memory Threats Fixed

ubuntu
Calendar Grey October 4, 2023
Dist Ubuntu Esm H88
The latest security patch for Ubuntu 22.04 LTS addresses significant kernel vulnerabilities, incorporating several essential updates while unveiling potential new risks.
Several security issues were fixed in the Linux kernel.

Summary

Several security issues were fixed in the Linux kernel.

Software Description:

- linux-oem-6.1: Linux kernel for OEM systems

Details:

Daniel Trujillo, Johannes Wikner, and Kaveh Razavi discovered that some AMD

processors utilising speculative execution and branch prediction may allow

unauthorised memory reads via a speculative side-channel attack. A local

attacker could use this to expose sensitive information, including kernel

memory. (CVE-2023-20569)

Ivan D Barrera, Christopher Bednarz, Mustafa Ismail, and Shiraz Saleem

discovered that the InfiniBand RDMA driver in the Linux kernel did not

properly check for zero-length STAG or MR registration. A remote attacker

could possibly use this to execute arbitrary code. (CVE-2023-25775)

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

race condition while handling device descriptors in certain situations,

leading to a out-of-bounds read vulnerability. A local attacker could

possibly use t...

Read the Full Advisory

Topics%20covered

Topics Covered

security advisory critical kernel attack ubuntu system memory

Update Instructions

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

Ubuntu 22.04 LTS:
   linux-image-6.1.0-1023-oem      6.1.0-1023.23
   linux-image-oem-22.04a          6.1.0.1023.24
   linux-image-oem-22.04b          6.1.0.1023.24
   linux-image-oem-22.04c          6.1.0.1023.24

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-6415-1

CVE-2023-20569, CVE-2023-25775, CVE-2023-37453, CVE-2023-3772,

CVE-2023-3773, CVE-2023-42753, CVE-2023-4622, CVE-2023-4623

Severity
critical
Lowest
Low
Medium
High
Critical

Ubuntu Security Notice USN-6415-1

Topics%20covered

Topics Covered

security advisory critical kernel attack ubuntu system memory

Package Information

https://launchpad.net/ubuntu/+source/linux-oem-6.1/6.1.0-1023.23

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