========================================================================== Ubuntu Security Notice USN-8280-1 May 19, 2026
linux, linux-aws, linux-aws-fips, linux-bluefield, linux-fips, linux-gcp, linux-gcp-5.4, linux-gcp-fips, linux-ibm, linux-ibm-5.4, linux-kvm, linux-oracle, linux-oracle-5.4, linux-xilinx-zynqmp vulnerabilities ========================================================================== A security issue affects these releases of Ubuntu and its derivatives: - Ubuntu 20.04 LTS - Ubuntu 18.04 LTS Summary: Several security issues were fixed in the Linux kernel. Software Description: - linux: Linux kernel - linux-aws: Linux kernel for Amazon Web Services (AWS) systems - linux-aws-fips: Linux kernel for Amazon Web Services (AWS) systems with FIPS - linux-bluefield: Linux kernel for NVIDIA BlueField platforms - linux-fips: Linux kernel with FIPS - linux-gcp: Linux kernel for Google Cloud Platform (GCP) systems- linux-gcp-fips: Linux kernel for Google Cloud Platform (GCP) systems with FIPS
- linux-ibm: Linux kernel for IBM cloud systems
- linux-kvm: Linux kernel for cloud environments
- linux-oracle: Linux kernel for Oracle Cloud systems
- linux-xilinx-zynqmp: Linux kernel for Xilinx ZynqMP processors
- linux-gcp-5.4: Linux kernel for Google Cloud Platform (GCP) systems
- linux-ibm-5.4: Linux kernel for IBM cloud systems
- linux-oracle-5.4: 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;
- TLS protocol;
(CVE-2026-31504, CVE-2026-31533, CVE-2026-43033, CVE-2026-43077,
CVE-2026-43078)
Update instructions:
The problem can be corrected by updating your system to the following
package versions:
Ubuntu 20.04 LTS
linux-image-5.4.0-1077-xilinx-zynqmp 5.4.0-1077.81
Available with Ubuntu Pro
linux-image-5.4.0-1105-ibm 5.4.0-1105.110
Available with Ubuntu Pro
linux-image-5.4.0-1118-bluefield 5.4.0-1118.125
Available with Ubuntu Pro
linux-image-5.4.0-1133-fips 5.4.0-1133.143
Available with Ubuntu Pro
linux-image-5.4.0-1146-kvm 5.4.0-1146.155
Available with Ubuntu Pro
linux-image-5.4.0-1157-oracle 5.4.0-1157.167
Available with Ubuntu Pro
linux-image-5.4.0-1159-aws 5.4.0-1159.169
Available with Ubuntu Pro
linux-image-5.4.0-1159-aws-fips 5.4.0-1159.169+fips1
Available with Ubuntu Pro
linux-image-5.4.0-1162-gcp 5.4.0-1162.171
Available with Ubuntu Pro
linux-image-5.4.0-1162-gcp-fips 5.4.0-1162.171+fips1
Available with Ubuntu Pro
linux-image-5.4.0-230-generic 5.4.0-230.250
Available with Ubuntu Pro
linux-image-5.4.0-230-generic-lpae 5.4.0-230.250
Available with Ubuntu Pro
linux-image-5.4.0-230-lowlatency 5.4.0-230.250
Available with Ubuntu Pro
linux-image-aws-5.4 5.4.0.1159.156
Available with Ubuntu Pro
linux-image-aws-fips 5.4.0.1159.106
Available with Ubuntu Pro
linux-image-aws-fips-5.4 5.4.0.1159.106
Available with Ubuntu Pro
linux-image-aws-lts-20.04 5.4.0.1159.156
Available with Ubuntu Pro
linux-image-bluefield 5.4.0.1118.114
Available with Ubuntu Pro
linux-image-bluefield-5.4 5.4.0.1118.114
Available with Ubuntu Pro
linux-image-fips 5.4.0.1133.130
Available with Ubuntu Pro
linux-image-fips-5.4 5.4.0.1133.130
Available with Ubuntu Pro
linux-image-gcp-5.4 5.4.0.1162.164
Available with Ubuntu Pro
linux-image-gcp-fips 5.4.0.1162.104
Available with Ubuntu Pro
linux-image-gcp-fips-5.4 5.4.0.1162.104
Available with Ubuntu Pro
linux-image-gcp-lts-20.04 5.4.0.1162.164
Available with Ubuntu Pro
linux-image-generic 5.4.0.230.222
Available with Ubuntu Pro
linux-image-generic-5.4 5.4.0.230.222
Available with Ubuntu Pro
linux-image-generic-lpae 5.4.0.230.222
Available with Ubuntu Pro
linux-image-generic-lpae-5.4 5.4.0.230.222
Available with Ubuntu Pro
linux-image-ibm-5.4 5.4.0.1105.134
Available with Ubuntu Pro
linux-image-ibm-lts-20.04 5.4.0.1105.134
Available with Ubuntu Pro
linux-image-kvm 5.4.0.1146.142
Available with Ubuntu Pro
linux-image-kvm-5.4 5.4.0.1146.142
Available with Ubuntu Pro
linux-image-lowlatency 5.4.0.230.222
Available with Ubuntu Pro
linux-image-lowlatency-5.4 5.4.0.230.222
Available with Ubuntu Pro
linux-image-oem 5.4.0.230.222
Available with Ubuntu Pro
linux-image-oem-osp1 5.4.0.230.222
Available with Ubuntu Pro
linux-image-oracle-5.4 5.4.0.1157.151
Available with Ubuntu Pro
linux-image-oracle-lts-20.04 5.4.0.1157.151
Available with Ubuntu Pro
linux-image-virtual 5.4.0.230.222
Available with Ubuntu Pro
linux-image-virtual-5.4 5.4.0.230.222
Available with Ubuntu Pro
linux-image-xilinx-zynqmp 5.4.0.1077.77
Available with Ubuntu Pro
linux-image-xilinx-zynqmp-5.4 5.4.0.1077.77
Available with Ubuntu Pro
Ubuntu 18.04 LTS
linux-image-5.4.0-1105-ibm 5.4.0-1105.110~18.04.1
Available with Ubuntu Pro
linux-image-5.4.0-1157-oracle 5.4.0-1157.167~18.04.1
Available with Ubuntu Pro
linux-image-5.4.0-1162-gcp 5.4.0-1162.171~18.04.1
Available with Ubuntu Pro
linux-image-gcp 5.4.0.1162.171~18.04.1
Available with Ubuntu Pro
linux-image-gcp-5.4 5.4.0.1162.171~18.04.1
Available with Ubuntu Pro
linux-image-ibm 5.4.0.1105.110~18.04.1
Available with Ubuntu Pro
linux-image-ibm-5.4 5.4.0.1105.110~18.04.1
Available with Ubuntu Pro
linux-image-oracle 5.4.0.1157.167~18.04.1
Available with Ubuntu Pro
linux-image-oracle-5.4 5.4.0.1157.167~18.04.1
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-8280-1
CVE-2026-31431, CVE-2026-31504, CVE-2026-31533, CVE-2026-43033,
CVE-2026-43077, CVE-2026-43078
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Description: OpenPGP digital signature
