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Ubuntu 22.04: USN-5780-1 Moderate: Linux Kernel Memory Leak Issues

ubuntu
Calendar Grey December 14, 2022
Dist Ubuntu Esm H88
Multiple vulnerabilities impacting Ubuntu 22.04 LTS Linux kernel addressed in USN-5781-2. Ensure your system is up-to-date for optimal security.
Several security issues were fixed in the Linux kernel.

Summary

Several security issues were fixed in the Linux kernel.

Software Description:

- linux-oem-6.0: Linux kernel for OEM systems

Details:

It was discovered that a memory leak existed in the IPv6 implementation of

the Linux kernel. A local attacker could use this to cause a denial of

service (memory exhaustion). (CVE-2022-3524)

It was discovered that the Bluetooth HCI implementation in the Linux kernel

did not properly deallocate memory in some situations. An attacker could

possibly use this cause a denial of service (memory exhaustion).

(CVE-2022-3619)

It was discovered that the Broadcom FullMAC USB WiFi driver in the Linux

kernel did not properly perform bounds checking in some situations. A

physically proximate attacker could use this to craft a malicious USB

device that when inserted, could cause a denial of service (system crash)

or possibly execute arbitrary code. (CVE-2022-3628)

Tamás Koczka discovered that the Bluetooth L2CAP implementation in the

L...

Read the Full Advisory

Topics%20covered

Topics Covered

security advisory Ubuntu memory leak Denial of Service Linux kernel Bluetooth vulnerability OEM system

Update Instructions

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

Ubuntu 22.04 LTS:
   linux-image-6.0.0-1008-oem      6.0.0-1008.8
   linux-image-oem-22.04b          6.0.0.1008.8

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-5780-1

CVE-2022-3524, CVE-2022-3619, CVE-2022-3628, CVE-2022-42895,

CVE-2022-42896

December 14, 2022

Topics%20covered

Topics Covered

security advisory Ubuntu memory leak Denial of Service Linux kernel Bluetooth vulnerability OEM system

Package Information

https://launchpad.net/ubuntu/+source/linux-oem-6.0/6.0.0-1008.8

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