1. Ubuntu Security Notices
  2. USN-8278-1

USN-8278-1: Linux kernel vulnerabilities

Publication date

19 May 2026

Overview

Several security issues were fixed in the Linux kernel.

Releases

Packages

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:

  • ARM64 architecture;
  • x86 architecture;
  • Cryptographic API;
  • Compute Acceleration Framework;
  • Drivers core;
  • Null block device driver;
  • Ublk userspace block driver;
  • Bluetooth drivers;
  • Counter interface drivers;
  • DMA engine subsystem;
  • DPLL subsystem;
  • GPU drivers;
  • HID subsystem;
  • Intel Trace Hub HW tracing drivers;
  • IIO ADC drivers;
  • IIO...

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:

  • ARM64 architecture;
  • x86 architecture;
  • Cryptographic API;
  • Compute Acceleration Framework;
  • Drivers core;
  • Null block device driver;
  • Ublk userspace block driver;
  • Bluetooth drivers;
  • Counter interface drivers;
  • DMA engine subsystem;
  • DPLL subsystem;
  • GPU drivers;
  • HID subsystem;
  • Intel Trace Hub HW tracing drivers;
  • IIO ADC drivers;
  • IIO subsystem;
  • On-Chip Interconnect management framework;
  • IRQ chip drivers;
  • Modular ISDN driver;
  • LED subsystem;
  • Multiple devices driver;
  • UACCE accelerator framework;
  • MMC subsystem;
  • Ethernet bonding driver;
  • Network drivers;
  • Mellanox network drivers;
  • NVME drivers;
  • PHY drivers;
  • x86 platform drivers;
  • i.MX PM domains;
  • SCSI subsystem;
  • SLIMbus drivers;
  • SPI subsystem;
  • TCM subsystem;
  • W1 Dallas's 1-wire bus driver;
  • Xen hypervisor drivers;
  • BTRFS file system;
  • EFI Variable file system;
  • exFAT file system;
  • Ext4 file system;
  • HFS+ file system;
  • Network file system (NFS) client;
  • Network file system (NFS) server daemon;
  • NTFS3 file system;
  • SMB network file system;
  • Scheduler infrastructure;
  • Netfilter;
  • NFC subsystem;
  • Tracing infrastructure;
  • io_uring subsystem;
  • BPF subsystem;
  • Perf events;
  • Floating proportions library;
  • Memory management;
  • Bluetooth subsystem;
  • CAN network layer;
  • Ceph Core library;
  • Networking core;
  • IPv4 networking;
  • IPv6 networking;
  • L2TP protocol;
  • MAC80211 subsystem;
  • NET/ROM layer;
  • Packet sockets;
  • Network traffic control;
  • SCTP protocol;
  • TLS protocol;
  • Unix domain sockets;
  • VMware vSockets driver;
  • Wireless networking;
  • ALSA AC97 driver;
  • Generic PCM loopback sound driver;
  • Creative Sound Blaster X-Fi driver;
  • AMD SoC Alsa drivers;
  • Texas InstrumentS Audio (ASoC/HDA) drivers;
  • USB sound devices;
  • KVM subsystem

Update instructions

After a standard system update you need to reboot your computer to make all the necessary changes.

Learn more about how to get the fixes.

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.

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

Ubuntu Release Package Version
24.04 LTS noble linux-image-6.8.0-1041-gkeop –  6.8.0-1041.44
linux-image-6.8.0-1054-gke –  6.8.0-1054.60
linux-image-6.8.0-1054-gke-64k –  6.8.0-1054.60
linux-image-6.8.0-1055-aws –  6.8.0-1055.58
linux-image-6.8.0-1055-aws-64k –  6.8.0-1055.58
linux-image-6.8.0-1055-aws-fips –  6.8.0-1055.58+fips1  
linux-image-6.8.0-1055-ibm –  6.8.0-1055.56
linux-image-6.8.0-1056-raspi –  6.8.0-1056.60
linux-image-6.8.0-1058-gcp –  6.8.0-1058.61
linux-image-6.8.0-1058-gcp-64k –  6.8.0-1058.61
linux-image-6.8.0-1058-gcp-fips –  6.8.0-1058.61+fips1  
linux-image-6.8.0-117-generic –  6.8.0-117.117
linux-image-6.8.0-117-generic-64k –  6.8.0-117.117
linux-image-6.8.0-117-lowlatency –  6.8.0-117.117.1
linux-image-6.8.0-117-lowlatency-64k –  6.8.0-117.117.1
linux-image-6.8.0-2045-raspi-realtime –  6.8.0-2045.46  
linux-image-6.8.1-1051-realtime –  6.8.1-1051.52  
linux-image-aws-6.8 –  6.8.0-1055.58
linux-image-aws-64k-6.8 –  6.8.0-1055.58
linux-image-aws-64k-lts-24.04 –  6.8.0-1055.58
linux-image-aws-fips –  6.8.0-1055.58+fips1  
linux-image-aws-fips-6.8 –  6.8.0-1055.58+fips1  
linux-image-aws-lts-24.04 –  6.8.0-1055.58
linux-image-gcp-6.8 –  6.8.0-1058.61
linux-image-gcp-64k-6.8 –  6.8.0-1058.61
linux-image-gcp-64k-lts-24.04 –  6.8.0-1058.61
linux-image-gcp-fips –  6.8.0-1058.61+fips1  
linux-image-gcp-fips-6.8 –  6.8.0-1058.61+fips1  
linux-image-gcp-lts-24.04 –  6.8.0-1058.61
linux-image-generic –  6.8.0-117.117
linux-image-generic-6.8 –  6.8.0-117.117
linux-image-generic-64k –  6.8.0-117.117
linux-image-generic-64k-6.8 –  6.8.0-117.117
linux-image-generic-lpae –  6.8.0-117.117
linux-image-gke –  6.8.0-1054.60
linux-image-gke-6.8 –  6.8.0-1054.60
linux-image-gke-64k –  6.8.0-1054.60
linux-image-gke-64k-6.8 –  6.8.0-1054.60
linux-image-gkeop –  6.8.0-1041.44
linux-image-gkeop-6.8 –  6.8.0-1041.44
linux-image-ibm –  6.8.0-1055.56
linux-image-ibm-6.8 –  6.8.0-1055.56
linux-image-ibm-classic –  6.8.0-1055.56
linux-image-ibm-lts-24.04 –  6.8.0-1055.56
linux-image-intel-iot-realtime –  6.8.1-1051.52  
linux-image-intel-iotg –  6.8.0-117.117
linux-image-kvm –  6.8.0-117.117
linux-image-lowlatency –  6.8.0-117.117.1
linux-image-lowlatency-6.8 –  6.8.0-117.117.1
linux-image-lowlatency-64k –  6.8.0-117.117.1
linux-image-lowlatency-64k-6.8 –  6.8.0-117.117.1
linux-image-raspi –  6.8.0-1056.60
linux-image-raspi-6.8 –  6.8.0-1056.60
linux-image-raspi-realtime –  6.8.0-2045.46  
linux-image-raspi-realtime-6.8 –  6.8.0-2045.46  
linux-image-realtime –  6.8.1-1051.52  
linux-image-realtime-6.8.1 –  6.8.1-1051.52  
linux-image-virtual –  6.8.0-117.117
linux-image-virtual-6.8 –  6.8.0-117.117
22.04 LTS jammy linux-image-6.8.0-1055-ibm –  6.8.0-1055.56~22.04.1
linux-image-6.8.0-117-lowlatency –  6.8.0-117.117.1~22.04.1
linux-image-6.8.0-117-lowlatency-64k –  6.8.0-117.117.1~22.04.1
linux-image-6.8.1-1051-realtime –  6.8.1-1051.52~22.04.1  
linux-image-ibm-6.8 –  6.8.0-1055.56~22.04.1
linux-image-lowlatency-6.8 –  6.8.0-117.117.1~22.04.1
linux-image-lowlatency-64k-6.8 –  6.8.0-117.117.1~22.04.1
linux-image-lowlatency-64k-hwe-22.04 –  6.8.0-117.117.1~22.04.1
linux-image-lowlatency-hwe-22.04 –  6.8.0-117.117.1~22.04.1
linux-image-realtime-6.8.1 –  6.8.1-1051.52~22.04.1  
linux-image-realtime-hwe-22.04 –  6.8.1-1051.52~22.04.1  

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References

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