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Ubuntu 24.04 LTS: USN-7595-2 critical: linux-realtime security threats

ubuntu
Calendar Grey June 24, 2025
Dist Ubuntu Esm H88
Essential patches for Ubuntu 24.04 LTS have been released to rectify vulnerabilities in the linux-realtime kernel. Prompt implementation is advised.
Several security issues were fixed in the Linux kernel.

Summary

Several security issues were fixed in the Linux kernel.

Software Description:

- linux-realtime: Linux kernel for Real-time systems

Details:

It was discovered that the CIFS network file system implementation in the

Linux kernel did not properly verify the target namespace when handling

upcalls. An attacker could use this to expose sensitive information.

(CVE-2025-2312)

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:

- GPIO subsystem;

- GPU drivers;

- InfiniBand drivers;

- IRQ chip drivers;

- Network drivers;

- Mellanox network drivers;

- i.MX PM domains;

- SCSI subsystem;

- USB Serial drivers;

- AFS file system;

- GFS2 file system;

- File systems infrastructure;

- File system notification infrastructure;

- Overlay file system;

- Proc file system;

- SMB network file system;

...

Read the Full Advisory

Topics%20covered

Topics Covered

security advisory critical remote access information exposure ubuntu linux-realtime

Update Instructions

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

Ubuntu 24.04 LTS
   linux-image-6.8.1-1023-realtime  6.8.1-1023.24
                                   Available with Ubuntu Pro
   linux-image-realtime            6.8.1-1023.24
                                   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-7595-2

https://ubuntu.com/security/notices/USN-7595-1

CVE-2024-50157, CVE-2024-53124, CVE-2024-57924, CVE-2024-57948,

CVE-2024-57949, CVE-2024-57951, CVE-2024-57952, CVE-2025-21665,

CVE-2025-21666, CVE-2025-21667, CVE-2025-21668, CVE-2025-21669,

CVE-2025-21670, CVE-2025-21672, CVE-2025-21673, CVE-2025-21674,

CVE-2025-21675, CVE-2025-21676, CVE-2025-21678, CVE-2025-21680,

CVE-2025-21681, CVE-2025-21682, CVE-2025-21683, CVE-2025-21684,

CVE-2025-21689, CVE-2025-21690, CVE-2025-21691, CVE-2025-21692,

CVE-2025-21694, CVE-2025-21697, CVE-2025-21699, CVE-2025-21943,

CVE-2025-2312

Severity
critical
Lowest
Low
Medium
High
Critical

Ubuntu Security Notice USN-7595-2

Topics%20covered

Topics Covered

security advisory critical remote access information exposure ubuntu linux-realtime

Package Information

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