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Ubuntu 22.04 LTS USN-6206-1 Moderate: Linux Kernel DoS Threats

ubuntu
Calendar Grey July 6, 2023
Dist Ubuntu Esm H88
Numerous critical kernel vulnerabilities found in Ubuntu 22.04 LTS necessitating urgent updates to safeguard against possible attacks.
Several security issues were fixed in the Linux kernel.

Summary

Several security issues were fixed in the Linux kernel.

Software Description:

- linux-oem-5.17: Linux kernel for OEM systems

Details:

Hangyu Hua discovered that the Flower classifier implementation in the

Linux kernel contained an out-of-bounds write vulnerability. An attacker

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

execute arbitrary code. (CVE-2023-35788, LP: #2023577)

It was discovered that the NTFS file system implementation in the Linux

kernel contained a null pointer dereference in some situations. A local

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

(CVE-2022-4842)

Seth Jenkins discovered that the CPU data to memory implementation for x86

processors in the Linux kernel did not properly perform address

randomization. A local attacker could use this to expose sensitive

information (kernel memory) or in conjunction with another kernel

vulnerability. (CVE-2023-0597)

It was discovered that the XFS...

Read the Full Advisory

Topics%20covered

Topics Covered

security advisory Ubuntu Denial of Service Linux kernel memory exposure

Update Instructions

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

Ubuntu 22.04 LTS:
   linux-image-5.17.0-1034-oem     5.17.0-1034.35
   linux-image-oem-22.04           5.17.0.1034.32
   linux-image-oem-22.04a          5.17.0.1034.32

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-6206-1

https://bugs.launchpad.net/ubuntu/+source/linux/+bug/2023220

https://bugs.launchpad.net/ubuntu/+source/linux/+bug/2023577

CVE-2022-4842, CVE-2023-0597, CVE-2023-2124, CVE-2023-35788

July 06, 2023

Topics%20covered

Topics Covered

security advisory Ubuntu Denial of Service Linux kernel memory exposure

Package Information

https://launchpad.net/ubuntu/+source/linux-oem-5.17/5.17.0-1034.35

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