========================================================================== Ubuntu Security Notice USN-8441-1 June 17, 2026
linux-aws-hwe, linux-azure, linux-gcp, linux-hwe, linux-oracle
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-aws-hwe: Linux kernel for Amazon Web Services (AWS-HWE) systems
- linux-azure: Linux kernel for Microsoft Azure Cloud systems
- linux-gcp: Linux kernel for Google Cloud Platform (GCP) systems
- linux-hwe: Linux hardware enablement (HWE) kernel
- linux-oracle: Linux kernel for Oracle 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:
- Cryptographic API;
- Packet sockets;
(CVE-2026-31504, CVE-2026-43033, CVE-2026-43077, CVE-2026-43078,
CVE-2026-46028)
Update instructions:
The problem can be corrected by updating your system to the following
package versions:
Ubuntu 16.04 LTS
linux-image-4.15.0-1154-oracle 4.15.0-1154.165~16.04.1
Available with Ubuntu Pro
linux-image-4.15.0-1185-gcp 4.15.0-1185.202~16.04.1
Available with Ubuntu Pro
linux-image-4.15.0-1192-aws 4.15.0-1192.205~16.04.1
Available with Ubuntu Pro
linux-image-4.15.0-1201-azure 4.15.0-1201.216~16.04.1
Available with Ubuntu Pro
linux-image-4.15.0-250-generic 4.15.0-250.262~16.04.1
Available with Ubuntu Pro
linux-image-4.15.0-250-lowlatency 4.15.0-250.262~16.04.1
Available with Ubuntu Pro
linux-image-aws-hwe 4.15.0.1192.205~16.04.1
Available with Ubuntu Pro
linux-image-azure 4.15.0.1201.216~16.04.1
Available with Ubuntu Pro
linux-image-gcp 4.15.0.1185.202~16.04.1
Available with Ubuntu Pro
linux-image-generic-hwe-16.04 4.15.0.250.262~16.04.1
Available with Ubuntu Pro
linux-image-gke 4.15.0.1185.202~16.04.1
Available with Ubuntu Pro
linux-image-lowlatency-hwe-16.04 4.15.0.250.262~16.04.1
Available with Ubuntu Pro
linux-image-oem 4.15.0.250.262~16.04.1
Available with Ubuntu Pro
linux-image-oracle 4.15.0.1154.165~16.04.1
Available with Ubuntu Pro
linux-image-virtual-hwe-16.04 4.15.0.250.262~16.04.1
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-8441-1
CVE-2026-31431, CVE-2026-31504, CVE-2026-43033, CVE-2026-43077,
CVE-2026-43078, CVE-2026-46028
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