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Ubuntu 18.04 LTS linux-kernel Critical Session Management Flaws USN-7988-2

ubuntu
Calendar Grey January 29, 2026
Dist Ubuntu Esm H88
Discover important updates addressing multiple Linux kernel security flaws in Ubuntu 18.04 and AWS systems for enhanced protection.
Several security issues were fixed in the Linux kernel.

Summary

Several security issues were fixed in the Linux kernel.

Software Description:

- linux-aws-fips: Linux kernel for Amazon Web Services (AWS) systems with FIPS

- linux-fips: Linux kernel with FIPS

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:

- Media drivers;

- NVME drivers;

- File systems infrastructure;

- Timer subsystem;

- Memory management;

- Packet sockets;

(CVE-2022-48986, CVE-2024-27078, CVE-2024-49959, CVE-2024-50195,

CVE-2024-56606, CVE-2024-56756, CVE-2025-39993)

Topics%20covered

Topics Covered

security advisory critical Ubuntu memory management session management Linux kernel

Update Instructions

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

Ubuntu 18.04 LTS
   linux-image-4.15.0-1143-fips    4.15.0-1143.155
                                   Available with Ubuntu Pro
   linux-image-4.15.0-2126-aws-fips  4.15.0-2126.132
                                   Available with Ubuntu Pro
   linux-image-aws-fips            4.15.0.2126.120
                                   Available with Ubuntu Pro
   linux-image-aws-fips-4.15       4.15.0.2126.120
                                   Available with Ubuntu Pro
   linux-image-fips                4.15.0.1143.140
                                   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-7988-2

https://ubuntu.com/security/notices/USN-7988-1

CVE-2022-48986, CVE-2024-27078, CVE-2024-49959, CVE-2024-50195,

CVE-2024-56606, CVE-2024-56756, CVE-2025-39993

Severity
critical
Lowest
Low
Medium
High
Critical

Ubuntu Security Notice USN-7988-2

Topics%20covered

Topics Covered

security advisory critical Ubuntu memory management session management Linux kernel

Package Information

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