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Ubuntu 22.04 LTS Linux Kernel Critical Security Fix USN-8033-2

Calendar Feb 12, 2026 • User Avatar LinuxSecurity Advisories
3 - 6 min read
Ubuntu Large Esm H500
Topics%20covered

Topics Covered

security advisory critical Ubuntu system compromise Linux kernel updating-systems
Several security issues were fixed in the Linux kernel. 
==========================================================================
Ubuntu Security Notice USN-8033-2
February 12, 2026

linux-intel-iot-realtime, linux-realtime 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-intel-iot-realtime: Linux kernel for Intel IoT Real-time platforms
- linux-realtime: Linux kernel for Real-time 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:
  - Nios II architecture;
  - Sun Sparc architecture;
  - User-Mode Linux (UML);
  - x86 architecture;
  - Block layer subsystem;
  - Cryptographic API;
  - Drivers core;
  - Bus devices;
  - Hardware random number generator core;
  - Data acquisition framework and drivers;
  - CPU frequency scaling framework;
  - DMA engine subsystem;
  - GPU drivers;
  - HW tracing;
  - Input Device (Miscellaneous) drivers;
  - Multiple devices driver;
  - Media drivers;
  - MOST (Media Oriented Systems Transport) drivers;
  - MTD block device drivers;
  - Network drivers;
  - NVME drivers;
  - PCI subsystem;
  - Performance monitor drivers;
  - Pin controllers subsystem;
  - x86 platform drivers;
  - PPS (Pulse Per Second) driver;
  - PWM drivers;
  - SCSI subsystem;
  - TCM subsystem;
  - Userspace I/O drivers;
  - USB Gadget drivers;
  - USB Host Controller drivers;
  - Framebuffer layer;
  - BTRFS file system;
  - File systems infrastructure;
  - Ext4 file system;
  - Network file system (NFS) server daemon;
  - NTFS3 file system;
  - SMB network file system;
  - padata parallel execution mechanism;
  - IP tunnels definitions;
  - Network sockets;
  - XFRM subsystem;
  - Control group (cgroup);
  - Padata parallel execution mechanism;
  - PID allocator;
  - Tracing infrastructure;
  - Memory management;
  - 9P file system network protocol;
  - Ethernet bridge;
  - Ceph Core library;
  - Networking core;
  - IPv4 networking;
  - IPv6 networking;
  - NFC subsystem;
  - RF switch subsystem;
  - SCTP protocol;
  - Unix domain sockets;
  - VMware vSockets driver;
  - Intel ASoC drivers;
  - USB sound devices;
(CVE-2024-53114, CVE-2024-56538, CVE-2024-58011, CVE-2025-21861,
CVE-2025-22058, CVE-2025-23143, CVE-2025-38236, CVE-2025-38248,
CVE-2025-38584, CVE-2025-39869, CVE-2025-39873, CVE-2025-39876,
CVE-2025-39880, CVE-2025-39883, CVE-2025-39885, CVE-2025-39907,
CVE-2025-39911, CVE-2025-39913, CVE-2025-39923, CVE-2025-39934,
CVE-2025-39937, CVE-2025-39943, CVE-2025-39945, CVE-2025-39949,
CVE-2025-39951, CVE-2025-39953, CVE-2025-39955, CVE-2025-39967,
CVE-2025-39968, CVE-2025-39969, CVE-2025-39970, CVE-2025-39971,
CVE-2025-39972, CVE-2025-39973, CVE-2025-39980, CVE-2025-39985,
CVE-2025-39986, CVE-2025-39987, CVE-2025-39988, CVE-2025-39994,
CVE-2025-39995, CVE-2025-39996, CVE-2025-39998, CVE-2025-40001,
CVE-2025-40006, CVE-2025-40011, CVE-2025-40020, CVE-2025-40021,
CVE-2025-40026, CVE-2025-40027, CVE-2025-40029, CVE-2025-40030,
CVE-2025-40035, CVE-2025-40042, CVE-2025-40043, CVE-2025-40044,
CVE-2025-40048, CVE-2025-40049, CVE-2025-40053, CVE-2025-40055,
CVE-2025-40060, CVE-2025-40068, CVE-2025-40070, CVE-2025-40078,
CVE-2025-40081, CVE-2025-40085, CVE-2025-40087, CVE-2025-40088,
CVE-2025-40092, CVE-2025-40094, CVE-2025-40105, CVE-2025-40106,
CVE-2025-40109, CVE-2025-40111, CVE-2025-40112, CVE-2025-40115,
CVE-2025-40116, CVE-2025-40118, CVE-2025-40120, CVE-2025-40121,
CVE-2025-40124, CVE-2025-40125, CVE-2025-40126, CVE-2025-40127,
CVE-2025-40134, CVE-2025-40140, CVE-2025-40153, CVE-2025-40154,
CVE-2025-40167, CVE-2025-40171, CVE-2025-40173, CVE-2025-40178,
CVE-2025-40179, CVE-2025-40183, CVE-2025-40187, CVE-2025-40188,
CVE-2025-40194, CVE-2025-40200, CVE-2025-40204, CVE-2025-40205,
CVE-2025-40215, CVE-2025-40219, CVE-2025-40220, CVE-2025-40223,
CVE-2025-40231, CVE-2025-40233, CVE-2025-40240, CVE-2025-40243,
CVE-2025-40244, CVE-2025-40245, CVE-2025-40346, CVE-2025-40349,
CVE-2025-40351, CVE-2025-68249)

Update instructions:

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

Ubuntu 22.04 LTS
  linux-image-5.15.0-1092-intel-iot-realtime  5.15.0-1092.94
                                  Available with Ubuntu Pro
  linux-image-5.15.0-1099-realtime  5.15.0-1099.108
                                  Available with Ubuntu Pro
  linux-image-intel-iot-realtime  5.15.0.1092.96
                                  Available with Ubuntu Pro
  linux-image-intel-iot-realtime-5.15  5.15.0.1092.96
                                  Available with Ubuntu Pro
  linux-image-realtime            5.15.0.1099.103
                                  Available with Ubuntu Pro
  linux-image-realtime-5.15       5.15.0.1099.103
                                  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-8033-2
  https://ubuntu.com/security/notices/USN-8033-1
  CVE-2024-53114, CVE-2024-56538, CVE-2024-58011, CVE-2025-21861,
  CVE-2025-22058, CVE-2025-23143, CVE-2025-38236, CVE-2025-38248,
  CVE-2025-38584, CVE-2025-39869, CVE-2025-39873, CVE-2025-39876,
  CVE-2025-39880, CVE-2025-39883, CVE-2025-39885, CVE-2025-39907,
  CVE-2025-39911, CVE-2025-39913, CVE-2025-39923, CVE-2025-39934,
  CVE-2025-39937, CVE-2025-39943, CVE-2025-39945, CVE-2025-39949,
  CVE-2025-39951, CVE-2025-39953, CVE-2025-39955, CVE-2025-39967,
  CVE-2025-39968, CVE-2025-39969, CVE-2025-39970, CVE-2025-39971,
  CVE-2025-39972, CVE-2025-39973, CVE-2025-39980, CVE-2025-39985,
  CVE-2025-39986, CVE-2025-39987, CVE-2025-39988, CVE-2025-39994,
  CVE-2025-39995, CVE-2025-39996, CVE-2025-39998, CVE-2025-40001,
  CVE-2025-40006, CVE-2025-40011, CVE-2025-40020, CVE-2025-40021,
  CVE-2025-40026, CVE-2025-40027, CVE-2025-40029, CVE-2025-40030,
  CVE-2025-40035, CVE-2025-40042, CVE-2025-40043, CVE-2025-40044,
  CVE-2025-40048, CVE-2025-40049, CVE-2025-40053, CVE-2025-40055,
  CVE-2025-40060, CVE-2025-40068, CVE-2025-40070, CVE-2025-40078,
  CVE-2025-40081, CVE-2025-40085, CVE-2025-40087, CVE-2025-40088,
  CVE-2025-40092, CVE-2025-40094, CVE-2025-40105, CVE-2025-40106,
  CVE-2025-40109, CVE-2025-40111, CVE-2025-40112, CVE-2025-40115,
  CVE-2025-40116, CVE-2025-40118, CVE-2025-40120, CVE-2025-40121,
  CVE-2025-40124, CVE-2025-40125, CVE-2025-40126, CVE-2025-40127,
  CVE-2025-40134, CVE-2025-40140, CVE-2025-40153, CVE-2025-40154,
  CVE-2025-40167, CVE-2025-40171, CVE-2025-40173, CVE-2025-40178,
  CVE-2025-40179, CVE-2025-40183, CVE-2025-40187, CVE-2025-40188,
  CVE-2025-40194, CVE-2025-40200, CVE-2025-40204, CVE-2025-40205,
  CVE-2025-40215, CVE-2025-40219, CVE-2025-40220, CVE-2025-40223,
  CVE-2025-40231, CVE-2025-40233, CVE-2025-40240, CVE-2025-40243,
  CVE-2025-40244, CVE-2025-40245, CVE-2025-40346, CVE-2025-40349,
  CVE-2025-40351, CVE-2025-68249

Package Information:

Ubuntu 22.04 LTS Linux Kernel Critical Security Fix USN-8033-2

ubuntu
Calendar Grey February 12, 2026
Dist Ubuntu Esm H88
Several security issues in the Linux kernel fixed; update instructions for Ubuntu 22.04 to enhance system protection.
Several security issues were fixed in the Linux kernel.

Summary

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-intel-iot-realtime: Linux kernel for Intel IoT Real-time platforms - linux-realtime: Linux kernel for Real-time 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: - Nios II architecture; - Sun Sparc architecture; - User-Mode Linux (UML); - x86 architecture; - Block layer subsystem; - Cryptographic API; - Drivers core; - Bus devices; - Hardware random number generator core; - Data acquisition framework and drivers; - CPU frequency scaling framework; - DMA engine subsystem; - GPU drivers; - HW tracing; - Input Device (Miscellaneous) drivers; - Multiple devices driver; - Media drivers; - MOST (Media Oriented Systems Tr...

Read the Full Advisory

Topics%20covered

Topics Covered

security advisory critical Ubuntu system compromise Linux kernel updating-systems

Update Instructions

The problem can be corrected by updating your system to the following package versions: Ubuntu 22.04 LTS linux-image-5.15.0-1092-intel-iot-realtime 5.15.0-1092.94 Available with Ubuntu Pro linux-image-5.15.0-1099-realtime 5.15.0-1099.108 Available with Ubuntu Pro linux-image-intel-iot-realtime 5.15.0.1092.96 Available with Ubuntu Pro linux-image-intel-iot-realtime-5.15 5.15.0.1092.96 Available with Ubuntu Pro linux-image-realtime 5.15.0.1099.103 Available with Ubuntu Pro linux-image-realtime-5.15 5.15.0.1099.103 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-8033-2

https://ubuntu.com/security/notices/USN-8033-1

CVE-2024-53114, CVE-2024-56538, CVE-2024-58011, CVE-2025-21861,

CVE-2025-22058, CVE-2025-23143, CVE-2025-38236, CVE-2025-38248,

CVE-2025-38584, CVE-2025-39869, CVE-2025-39873, CVE-2025-39876,

CVE-2025-39880, CVE-2025-39883, CVE-2025-39885, CVE-2025-39907,

CVE-2025-39911, CVE-2025-39913, CVE-2025-39923, CVE-2025-39934,

CVE-2025-39937, CVE-2025-39943, CVE-2025-39945, CVE-2025-39949,

CVE-2025-39951, CVE-2025-39953, CVE-2025-39955, CVE-2025-39967,

CVE-2025-39968, CVE-2025-39969, CVE-2025-39970, CVE-2025-39971,

CVE-2025-39972, CVE-2025-39973, CVE-2025-39980, CVE-2025-39985,

CVE-2025-39986, CVE-2025-39987, CVE-2025-39988, CVE-2025-39994,

CVE-2025-39995, CVE-2025-39996, CVE-2025-39998, CVE-2025-40001,

CVE-2025-40006, CVE-2025-40011, CVE-2025-40020, CVE-2025-40021,

CVE-2025-40026, CVE-2025-40027, CVE-2025-40029, CVE-2025-40030,

CVE-2025-40035, CVE-2025-40042, CVE-2025-40043, CVE-2025-40044,

CVE-2025-40048, CVE-2025-40049, CVE-2025-40053, CVE-2025-40055,

CVE-2025-40060, CVE-2025-40068, CVE-2025-40070, CVE-2025-40078,

CVE-2025-40081, CVE-2025-40085, CVE-2025-40087, CVE-2025-40088,

CVE-2025-40092, CVE-2025-40094, CVE-2025-40105, CVE-2025-40106,

CVE-2025-40109, CVE-2025-40111, CVE-2025-40112, CVE-2025-40115,

CVE-2025-40116, CVE-2025-40118, CVE-2025-40120, CVE-2025-40121,

CVE-2025-40124, CVE-2025-40125, CVE-2025-40126, CVE-2025-40127,

CVE-2025-40134, CVE-2025-40140, CVE-2025-40153, CVE-2025-40154,

CVE-2025-40167, CVE-2025-40171, CVE-2025-40173, CVE-2025-40178,

CVE-2025-40179, CVE-2025-40183, CVE-2025-40187, CVE-2025-40188,

CVE-2025-40194, CVE-2025-40200, CVE-2025-40204, CVE-2025-40205,

CVE-2025-40215, CVE-2025-40219, CVE-2025-40220, CVE-2025-40223,

CVE-2025-40231, CVE-2025-40233, CVE-2025-40240, CVE-2025-40243,

CVE-2025-40244, CVE-2025-40245, CVE-2025-40346, CVE-2025-40349,

CVE-2025-40351, CVE-2025-68249

Severity
critical
Lowest
Low
Medium
High
Critical

Ubuntu Security Notice USN-8033-2

Topics%20covered

Topics Covered

security advisory critical Ubuntu system compromise Linux kernel updating-systems

Package Information

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