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Ubuntu 22.04 LTS USN-5752-1 Critical: Kernel Denial Of Service Risks

ubuntu
Calendar Grey November 30, 2022
Dist Ubuntu Esm H88
Ubuntu 22.04 LTS addresses serious kernel security flaws through new package updates and provides essential reboot guidelines.
Several security issues were fixed in the Linux kernel.

Summary

Several security issues were fixed in the Linux kernel.

Software Description:

- linux-azure-fde: Linux kernel for Microsoft Azure CVM cloud systems

Details:

David Bouman and Billy Jheng Bing Jhong discovered that a race condition

existed in the io_uring subsystem in 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-2022-2602)

Sönke Huster discovered that an integer overflow vulnerability existed in

the WiFi driver stack in the Linux kernel, leading to a buffer overflow. A

physically proximate attacker could use this to cause a denial of service

(system crash) or possibly execute arbitrary code. (CVE-2022-41674)

Sönke Huster discovered that a use-after-free vulnerability existed in the

WiFi driver stack in the Linux kernel. A physically proximate attacker

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

exec...

Read the Full Advisory

Topics%20covered

Topics Covered

security advisory denial of service critical software update Ubuntu kernel azure

Update Instructions

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

Ubuntu 22.04 LTS:
   linux-image-5.15.0-1024-azure-fde  5.15.0-1024.30.1
   linux-image-azure-fde           5.15.0.1024.30.5

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-5752-1

CVE-2022-2602, CVE-2022-41674, CVE-2022-42719, CVE-2022-42720,

CVE-2022-42721, CVE-2022-42722

Severity
critical
Lowest
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Critical

November 30, 2022

Topics%20covered

Topics Covered

security advisory denial of service critical software update Ubuntu kernel azure

Package Information

https://launchpad.net/ubuntu/+source/linux-azure-fde/5.15.0-1024.30.1

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