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Ubuntu 22.10 USN-5754-2 Critical: Kernel Buffer Overflow and DoS

ubuntu
Calendar Grey December 12, 2022
Dist Ubuntu Esm H88
Ubuntu 22.10 tackles vital Linux kernel vulnerabilities with essential patches addressing denial of service threats and buffer overflow concerns.
Several security issues were fixed in the Linux kernel.

Summary

Several security issues were fixed in the Linux kernel.

Software Description:

- linux-azure: Linux kernel for Microsoft Azure Cloud systems

Details:

It was discovered that the NFSD implementation in the Linux kernel did not

properly handle some RPC messages, leading to a buffer overflow. A remote

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

possibly execute arbitrary code. (CVE-2022-43945)

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 a race condition existed in the Bluetooth 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-2022-3564)

It was discovered that the ISDN implementation of the Linux kernel

contained a use-after-f...

Read the Full Advisory

Topics%20covered

Topics Covered

security advisory denial of service buffer overflow arbitrary code execution ubuntu kernel issues linux-azure

Update Instructions

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

Ubuntu 22.10:
   linux-image-5.19.0-1013-azure   5.19.0-1013.14
   linux-image-azure               5.19.0.1013.10

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-5754-2

https://ubuntu.com/security/notices/USN-5754-1

CVE-2022-3524, CVE-2022-3564, CVE-2022-3565, CVE-2022-3566,

CVE-2022-3567, CVE-2022-3594, CVE-2022-3621, CVE-2022-43945

Severity
critical
Lowest
Low
Medium
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Critical

December 12, 2022

Topics%20covered

Topics Covered

security advisory denial of service buffer overflow arbitrary code execution ubuntu kernel issues linux-azure

Package Information

https://launchpad.net/ubuntu/+source/linux-azure/5.19.0-1013.14

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