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Ubuntu 20.04 LTS USN-7234-4 critical: linux-aws kernel double-free

ubuntu
Calendar Grey February 12, 2025
Dist Ubuntu Esm H88
Ubuntu 22.04 LTS security patch resolves severe vulnerabilities in the Linux kernel impacting Google Cloud environments and overall system reliability.
Several security issues were fixed in the Linux kernel.

Summary

Several security issues were fixed in the Linux kernel.

Software Description:

- linux-aws: Linux kernel for Amazon Web Services (AWS) systems

Details:

Ye Zhang and Nicolas Wu discovered that the io_uring subsystem in the Linux

kernel did not properly handle locking for rings with IOPOLL, leading to a

double-free vulnerability. A local attacker could use this to cause a

denial of service (system crash) or possibly execute arbitrary code.

(CVE-2023-21400)

Several security issues were discovered in the Linux kernel.

An attacker could possibly use these to compromise the system.

This update corrects flaws in the following subsystems:

- TTY drivers;

- Netfilter;

- Network traffic control;

- VMware vSockets driver;

(CVE-2024-53141, CVE-2024-53103, CVE-2024-40967, CVE-2024-53164)

Topics%20covered

Topics Covered

security advisory denial of service Ubuntu system crash double-free Linux kernel AWS

Update Instructions

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

Ubuntu 20.04 LTS
   linux-image-5.4.0-1139-aws      5.4.0-1139.149
   linux-image-aws-lts-20.04       5.4.0.1139.136

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-7234-4

https://ubuntu.com/security/notices/USN-7234-3

https://ubuntu.com/security/notices/USN-7234-2

https://ubuntu.com/security/notices/USN-7234-1

CVE-2023-21400, CVE-2024-40967, CVE-2024-53103, CVE-2024-53141,

CVE-2024-53164

Severity
critical
Lowest
Low
Medium
High
Critical

Ubuntu Security Notice USN-7234-4

Topics%20covered

Topics Covered

security advisory denial of service Ubuntu system crash double-free Linux kernel AWS

Package Information

https://launchpad.net/ubuntu/+source/linux-aws/5.4.0-1139.149

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