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Ubuntu Linux has been updated with security updates, including a HarfBuzz vulnerability and vulnerabilities in the Linux kernel (Azure):

[USN-7251-1] HarfBuzz vulnerability
[USN-7233-3] Linux kernel (Azure) vulnerabilities




[USN-7251-1] HarfBuzz vulnerability


==========================================================================
Ubuntu Security Notice USN-7251-1
February 03, 2025

harfbuzz vulnerability
==========================================================================

A security issue affects these releases of Ubuntu and its derivatives:

- Ubuntu 22.04 LTS
- Ubuntu 20.04 LTS

Summary:

HarfBuzz could be made to consume resources if it opened a specially
crafted font.

Software Description:
- harfbuzz: OpenType text shaping engine

Details:

It was discovered that HarfBuzz incorrectly handled shaping certain fonts.
A remote attacker could possibly use this issue to cause HarfBuzz to
consume resources, leading to a denial of service.

Update instructions:

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

Ubuntu 22.04 LTS
libharfbuzz0b 2.7.4-1ubuntu3.2

Ubuntu 20.04 LTS
libharfbuzz0b 2.6.4-1ubuntu4.3

In general, a standard system update will make all the necessary changes.

References:
https://ubuntu.com/security/notices/USN-7251-1
CVE-2023-25193

Package Information:
https://launchpad.net/ubuntu/+source/harfbuzz/2.7.4-1ubuntu3.2
https://launchpad.net/ubuntu/+source/harfbuzz/2.6.4-1ubuntu4.3



[USN-7233-3] Linux kernel (Azure) vulnerabilities


==========================================================================
Ubuntu Security Notice USN-7233-3
February 03, 2025

linux-azure vulnerabilities
==========================================================================

A security issue affects these releases of Ubuntu and its derivatives:

- Ubuntu 16.04 LTS

Summary:

Several security issues were fixed in the Linux kernel.

Software Description:
- linux-meta-azure: Complete Linux kernel for Azure systems.

Details:

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:
- Multiple devices driver;
- Network drivers;
- Mellanox network drivers;
- S/390 drivers;
- SCSI subsystem;
- Sonic Silicon Backplane drivers;
- File systems infrastructure;
- Closures library;
- Netfilter;
- TIPC protocol;
- VMware vSockets driver;
(CVE-2024-26929, CVE-2024-40982, CVE-2024-42311, CVE-2024-53141,
CVE-2024-41066, CVE-2024-38661, CVE-2024-38553, CVE-2024-43914,
CVE-2024-26663, CVE-2024-42252, CVE-2024-38597, CVE-2024-53103,
CVE-2024-41020, CVE-2024-41012, CVE-2024-26595)

Update instructions:

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

Ubuntu 16.04 LTS
linux-image-4.15.0-1185-azure 4.15.0-1185.200~16.04.1
Available with Ubuntu Pro
linux-image-azure 4.15.0.1185.200~16.04.1
Available with Ubuntu Pro

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-7233-3
https://ubuntu.com/security/notices/USN-7233-2
https://ubuntu.com/security/notices/USN-7233-1
CVE-2024-26595, CVE-2024-26663, CVE-2024-26929, CVE-2024-38553,
CVE-2024-38597, CVE-2024-38661, CVE-2024-40982, CVE-2024-41012,
CVE-2024-41020, CVE-2024-41066, CVE-2024-42252, CVE-2024-42311,
CVE-2024-43914, CVE-2024-53103, CVE-2024-53141