Ubuntu 6923 Published by

Several security issues were discovered in the Linux kernel, which could potentially be used by an attacker to compromise a system. Ubuntu has released updates to correct these flaws for various Linux kernels, including those for Oracle Cloud systems (linux-oracle), Microsoft Azure cloud systems (linux-azure-fips and linux-azure-6.8), and Raspberry Pi systems (linux-raspi).

[USN-7791-4] Linux kernel (Oracle) vulnerabilities
[USN-7810-3] Linux kernel (Azure FIPS) vulnerabilities
[USN-7810-2] Linux kernel (Azure) vulnerabilities
[USN-7808-2] Linux kernel (Azure) vulnerabilities
[USN-7821-1] Linux kernel (Raspberry Pi) vulnerabilities




[USN-7791-4] Linux kernel (Oracle) vulnerabilities


==========================================================================
Ubuntu Security Notice USN-7791-4
October 14, 2025

linux-oracle, linux-oracle-6.14 vulnerabilities
==========================================================================

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

- Ubuntu 25.04
- Ubuntu 24.04 LTS

Summary:

Several security issues were fixed in the Linux kernel.

Software Description:
- linux-oracle: Linux kernel for Oracle Cloud systems
- linux-oracle-6.14: Linux kernel for Oracle Cloud 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:
- Packet sockets;
- Network traffic control;
- VMware vSockets driver;
- XFRM subsystem;
(CVE-2025-38477, CVE-2025-38618, CVE-2025-38500, CVE-2025-38617)

Update instructions:

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

Ubuntu 25.04
linux-image-6.14.0-1014-oracle 6.14.0-1014.14
linux-image-6.14.0-1014-oracle-64k 6.14.0-1014.14
linux-image-oracle 6.14.0-1014.14
linux-image-oracle-6.14 6.14.0-1014.14
linux-image-oracle-64k 6.14.0-1014.14
linux-image-oracle-64k-6.14 6.14.0-1014.14

Ubuntu 24.04 LTS
linux-image-6.14.0-1014-oracle 6.14.0-1014.14~24.04.1
linux-image-6.14.0-1014-oracle-64k 6.14.0-1014.14~24.04.1
linux-image-oracle 6.14.0-1014.14~24.04.1
linux-image-oracle-6.14 6.14.0-1014.14~24.04.1
linux-image-oracle-64k 6.14.0-1014.14~24.04.1
linux-image-oracle-64k-6.14 6.14.0-1014.14~24.04.1

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-7791-4
https://ubuntu.com/security/notices/USN-7791-3
https://ubuntu.com/security/notices/USN-7791-2
https://ubuntu.com/security/notices/USN-7791-1
CVE-2025-38477, CVE-2025-38500, CVE-2025-38617, CVE-2025-38618

Package Information:
https://launchpad.net/ubuntu/+source/linux-oracle/6.14.0-1014.14
https://launchpad.net/ubuntu/+source/linux-oracle-6.14/6.14.0-1014.14~24.04.1



[USN-7810-3] Linux kernel (Azure FIPS) vulnerabilities


==========================================================================
Ubuntu Security Notice USN-7810-3
October 14, 2025

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

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

- Ubuntu 22.04 LTS

Summary:

Several security issues were fixed in the Linux kernel.

Software Description:
- linux-azure-fips: Linux kernel for Microsoft Azure Cloud systems with FIPS

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:
- Network drivers;
- Packet sockets;
- Network traffic control;
- VMware vSockets driver;
(CVE-2025-38477, CVE-2025-38617, CVE-2025-38618, CVE-2025-38683)

Update instructions:

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

Ubuntu 22.04 LTS
linux-image-5.15.0-1097-azure-fips 5.15.0-1097.106+fips1
Available with Ubuntu Pro
linux-image-azure-fips 5.15.0.1097.82
Available with Ubuntu Pro
linux-image-azure-fips-5.15 5.15.0.1097.82
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-7810-3
https://ubuntu.com/security/notices/USN-7810-2
https://ubuntu.com/security/notices/USN-7810-1
CVE-2025-38477, CVE-2025-38617, CVE-2025-38618, CVE-2025-38683

Package Information:
https://launchpad.net/ubuntu/+source/linux-azure-fips/5.15.0-1097.106+fips1



[USN-7810-2] Linux kernel (Azure) vulnerabilities


==========================================================================
Ubuntu Security Notice USN-7810-2
October 14, 2025

linux-azure-5.15 vulnerabilities
==========================================================================

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

- Ubuntu 20.04 LTS

Summary:

Several security issues were fixed in the Linux kernel.

Software Description:
- linux-azure-5.15: Linux kernel for Microsoft Azure cloud 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:
- Network drivers;
- Packet sockets;
- Network traffic control;
- VMware vSockets driver;
(CVE-2025-38617, CVE-2025-38618, CVE-2025-38477, CVE-2025-38683)

Update instructions:

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

Ubuntu 20.04 LTS
linux-image-5.15.0-1097-azure 5.15.0-1097.106~20.04.1
Available with Ubuntu Pro
linux-image-azure 5.15.0.1097.106~20.04.1
Available with Ubuntu Pro
linux-image-azure-5.15 5.15.0.1097.106~20.04.1
Available with Ubuntu Pro
linux-image-azure-cvm 5.15.0.1097.106~20.04.1
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-7810-2
https://ubuntu.com/security/notices/USN-7810-1
CVE-2025-38477, CVE-2025-38617, CVE-2025-38618, CVE-2025-38683



[USN-7808-2] Linux kernel (Azure) vulnerabilities


==========================================================================
Ubuntu Security Notice USN-7808-2
October 14, 2025

linux-azure-6.8 vulnerabilities
==========================================================================

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

- Ubuntu 22.04 LTS

Summary:

Several security issues were fixed in the Linux kernel.

Software Description:
- linux-azure-6.8: Linux kernel for Microsoft Azure cloud 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:
- Network drivers;
- Ext4 file system;
- SMB network file system;
- Packet sockets;
- Network traffic control;
- TLS protocol;
- VMware vSockets driver;
- XFRM subsystem;
(CVE-2025-38617, CVE-2025-37756, CVE-2025-38683, CVE-2025-38477,
CVE-2025-38500, CVE-2025-37785, CVE-2025-38618, CVE-2025-38244)

Update instructions:

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

Ubuntu 22.04 LTS
linux-image-6.8.0-1040-azure 6.8.0-1040.46~22.04.1
linux-image-6.8.0-1040-azure-fde 6.8.0-1040.46~22.04.1
linux-image-azure 6.8.0-1040.46~22.04.1
linux-image-azure-6.8 6.8.0-1040.46~22.04.1
linux-image-azure-fde 6.8.0-1040.46~22.04.1
linux-image-azure-fde-6.8 6.8.0-1040.46~22.04.1

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-7808-2
https://ubuntu.com/security/notices/USN-7808-1
CVE-2025-37756, CVE-2025-37785, CVE-2025-38244, CVE-2025-38477,
CVE-2025-38500, CVE-2025-38617, CVE-2025-38618, CVE-2025-38683

Package Information:
https://launchpad.net/ubuntu/+source/linux-azure-6.8/6.8.0-1040.46~22.04.1



[USN-7821-1] Linux kernel (Raspberry Pi) vulnerabilities


==========================================================================
Ubuntu Security Notice USN-7821-1
October 14, 2025

linux-raspi vulnerabilities
==========================================================================

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

- Ubuntu 25.04

Summary:

Several security issues were fixed in the Linux kernel.

Software Description:
- linux-raspi: Linux kernel for Raspberry Pi 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:
- Packet sockets;
- Network traffic control;
- VMware vSockets driver;
- XFRM subsystem;
(CVE-2025-38500, CVE-2025-38477, CVE-2025-38617, CVE-2025-38618)

Update instructions:

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

Ubuntu 25.04
linux-image-6.14.0-1015-raspi 6.14.0-1015.15
linux-image-raspi 6.14.0-1015.15
linux-image-raspi-6.14 6.14.0-1015.15

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-7821-1
CVE-2025-38477, CVE-2025-38500, CVE-2025-38617, CVE-2025-38618

Package Information:
https://launchpad.net/ubuntu/+source/linux-raspi/6.14.0-1015.15