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Ubuntu 22.04: USN-7835-4 Critical Linux Kernel Issues Fixed

ubuntu
Calendar Grey October 31, 2025
Dist Ubuntu Esm H88
Several issues in the Linux kernel were patched in Ubuntu 22.04 for improved system integrity and security.
Several security issues were fixed in the Linux kernel.

Summary

Several security issues were fixed in the Linux kernel.

Software Description:

- linux-hwe-6.8: Linux hardware enablement (HWE) kernel

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:

- ARM64 architecture;

- PowerPC architecture;

- x86 architecture;

- ACPI drivers;

- Ublk userspace block driver;

- Clock framework and drivers;

- GPU drivers;

- IIO subsystem;

- InfiniBand drivers;

- Media drivers;

- MemoryStick subsystem;

- Network drivers;

- NTB driver;

- PCI subsystem;

- Remote Processor subsystem;

- Thermal drivers;

- Virtio Host (VHOST) subsystem;

- 9P distributed file system;

- File systems infrastructure;

- JFS file system;

- Network file system (NFS) server daemon;

- NTFS3 file system;

- SMB network file system;

- Memory management;

...

Read the Full Advisory

Topics%20covered

Topics Covered

security advisory critical Ubuntu system integrity compromise linux-hwe-6.8

Update Instructions

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

Ubuntu 22.04 LTS
   linux-image-6.8.0-86-generic    6.8.0-86.87~22.04.1
   linux-image-6.8.0-86-generic-64k  6.8.0-86.87~22.04.1
   linux-image-generic-6.8         6.8.0-86.87~22.04.1
   linux-image-generic-64k-6.8     6.8.0-86.87~22.04.1
   linux-image-generic-64k-hwe-22.04  6.8.0-86.87~22.04.1
   linux-image-generic-hwe-22.04   6.8.0-86.87~22.04.1
   linux-image-oem-22.04           6.8.0-86.87~22.04.1
   linux-image-oem-22.04a          6.8.0-86.87~22.04.1
   linux-image-oem-22.04b          6.8.0-86.87~22.04.1
   linux-image-oem-22.04c          6.8.0-86.87~22.04.1
   linux-image-oem-22.04d          6.8.0-86.87~22.04.1
   linux-image-virtual-6.8         6.8.0-86.87~22.04.1
   linux-image-virtual-hwe-22.04   6.8.0-86.87~22.04.1

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-7835-4

https://ubuntu.com/security/notices/USN-7835-3

https://ubuntu.com/security/notices/USN-7835-2

https://ubuntu.com/security/notices/USN-7835-1

CVE-2023-53034, CVE-2024-58092, CVE-2025-22018, CVE-2025-22019,

CVE-2025-22020, CVE-2025-22021, CVE-2025-22025, CVE-2025-22027,

CVE-2025-22028, CVE-2025-22033, CVE-2025-22035, CVE-2025-22036,

CVE-2025-22038, CVE-2025-22039, CVE-2025-22040, CVE-2025-22041,

CVE-2025-22042, CVE-2025-22044, CVE-2025-22045, CVE-2025-22047,

CVE-2025-22050, CVE-2025-22053, CVE-2025-22054, CVE-2025-22055,

CVE-2025-22056, CVE-2025-22057, CVE-2025-22058, CVE-2025-22060,

CVE-2025-22062, CVE-2025-22063, CVE-2025-22064, CVE-2025-22065,

CVE-2025-22066, CVE-2025-22068, CVE-2025-22070, CVE-2025-22071,

CVE-2025-22072, CVE-2025-22073, CVE-2025-22075, CVE-2025-22079,

CVE-2025-22080, CVE-2025-22081, CVE-2025-22083, CVE-2025-22086,

CVE-2025-22089, CVE-2025-22090, CVE-2025-22095, CVE-2025-22097,

CVE-2025-23136, CVE-2025-23138, CVE-2025-37937, CVE-2025-38152,

CVE-2025-38240, CVE-2025-38575, CVE-2025-38637, CVE-2025-39682,

CVE-2025-39728, CVE-2025-39735, CVE-2025-40114

Severity
critical
Lowest
Low
Medium
High
Critical

Ubuntu Security Notice USN-7835-4

Topics%20covered

Topics Covered

security advisory critical Ubuntu system integrity compromise linux-hwe-6.8

Package Information

https://launchpad.net/ubuntu/+source/linux-hwe-6.8/6.8.0-86.87~22.04.1

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