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Ubuntu 22.10 USN-5793-4 Critical: Multiple Linux Kernel DoS Threats

ubuntu
Calendar Grey January 10, 2023
Dist Ubuntu Esm H88
The latest Ubuntu update addresses several kernel vulnerabilities in the linux-ibm package, aiming to improve system stability and bolster security.
Several security issues were fixed in the Linux kernel.

Summary

Several security issues were fixed in the Linux kernel.

Software Description:

- linux-ibm: Linux kernel for IBM cloud systems

Details:

It was discovered that the io_uring subsystem in the Linux kernel did not

properly perform reference counting in some situations, 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-2022-3910)

It was discovered that a race condition existed in the Android Binder IPC

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-2022-20421)

David Leadbeater discovered that the netfilter IRC protocol tracking

implementation in the Linux Kernel incorrectly handled certain message

payloads in some situations. A remote attacker could possibly use this to

cause a denial of service or bypass firewal...

Read the Full Advisory

Topics%20covered

Topics Covered

security advisory denial of service kernel update ubuntu security issues linux-ibm

Update Instructions

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

Ubuntu 22.10:
   linux-image-5.19.0-1014-ibm     5.19.0-1014.15
   linux-image-ibm                 5.19.0.1014.11

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-5793-4

https://ubuntu.com/security/notices/USN-5793-1

CVE-2022-20421, CVE-2022-2663, CVE-2022-3303, CVE-2022-3541,

CVE-2022-3543, CVE-2022-3544, CVE-2022-3586, CVE-2022-3623,

CVE-2022-3646, CVE-2022-3649, CVE-2022-3910, CVE-2022-3977,

CVE-2022-40307, CVE-2022-4095, CVE-2022-41849, CVE-2022-41850,

CVE-2022-43750

Severity
critical
Lowest
Low
Medium
High
Critical

January 10, 2023

Topics%20covered

Topics Covered

security advisory denial of service kernel update ubuntu security issues linux-ibm

Package Information

https://launchpad.net/ubuntu/+source/linux-ibm/5.19.0-1014.15

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