Ubuntu alert USN-8310-1 (linux-azure, linux-azure-6.17)

From:
             
 
Rodrigo Figueiredo Zaiden <rodrigo.zaiden@canonical.com>
To:
             
 
ubuntu-security-announce@lists.ubuntu.com
Subject:
             
 
[USN-8310-1] Linux kernel (Azure) vulnerabilities
Date:
             
 
Tue, 26 May 2026 17:05:10 -0300
Message-ID:
             
 
<f5689dc0-1bea-496e-8ac6-fef4c492e90c@canonical.com>
==========================================================================
Ubuntu Security Notice USN-8310-1
May 26, 2026

linux-azure, linux-azure-6.17 vulnerabilities
==========================================================================

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

- Ubuntu 25.10
- Ubuntu 24.04 LTS

Summary:

Several security issues were fixed in the Linux kernel.

Software Description:
- linux-azure: Linux kernel for Microsoft Azure Cloud systems
- linux-azure-6.17: Linux kernel for Microsoft Azure cloud systems

Details:

It was discovered that the Linux kernel algif_aead module did not properly
handle in-place cryptographic operations. This flaw is known as Copy Fail.
A local attacker could use this to escalate privileges, or possibly escape
a container. (CVE-2026-31431)

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:
   - S390 architecture;
   - Cryptographic API;
   - GPU drivers;
   - Ethernet bonding driver;
   - Microsoft Azure Network Adapter (MANA) driver;
   - Network file system (NFS) server daemon;
   - Distributed Switch Architecture;
   - Netfilter;
   - Control group (cgroup);
   - Kernel kexec() syscall;
   - Memory management;
   - MAC80211 subsystem;
   - Multipath TCP;
   - Packet sockets;
   - TLS protocol;
   - Unix domain sockets;
(CVE-2025-71088, CVE-2025-71090, CVE-2025-71127, CVE-2025-71134,
CVE-2025-71139, CVE-2025-71141, CVE-2025-71142, CVE-2025-71144,
CVE-2025-71152, CVE-2025-71155, CVE-2026-23274, CVE-2026-23351,
CVE-2026-23394, CVE-2026-23454, CVE-2026-31419, CVE-2026-31504,
CVE-2026-31533, CVE-2026-43033, CVE-2026-43077, CVE-2026-43078,
CVE-2026-43276)

Update instructions:

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

Ubuntu 25.10
   linux-image-6.17.0-1015-azure   6.17.0-1015.15
   linux-image-azure               6.17.0-1015.15
   linux-image-azure-6.17          6.17.0-1015.15

Ubuntu 24.04 LTS
   linux-image-6.17.0-1015-azure   6.17.0-1015.15~24.04.1
   linux-image-azure               6.17.0-1015.15~24.04.1
   linux-image-azure-6.17          6.17.0-1015.15~24.04.1

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-8310-1
   CVE-2025-71088, CVE-2025-71090, CVE-2025-71127, CVE-2025-71134,
   CVE-2025-71139, CVE-2025-71141, CVE-2025-71142, CVE-2025-71144,
   CVE-2025-71152, CVE-2025-71155, CVE-2026-23274, CVE-2026-23351,
   CVE-2026-23394, CVE-2026-23454, CVE-2026-31419, CVE-2026-31431,
   CVE-2026-31504, CVE-2026-31533, CVE-2026-43033, CVE-2026-43077,
   CVE-2026-43078, CVE-2026-43276

Package Information:
   https://launchpad.net/ubuntu/+source/linux-azure/6.17.0-1...
   https://launchpad.net/ubuntu/+source/linux-azure-6.17/6.1...



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