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Ubuntu 20.04 LTS USN-7585-2 critical: Linux kernel information exposure

ubuntu
Calendar Grey June 19, 2025
Dist Ubuntu Esm H88
Significant vulnerabilities addressed in the Ubuntu Linux kernel impacting AWS and GCP; perform updates urgently to safeguard your infrastructure.
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-gcp-fips: Linux kernel for Google Cloud Platform (GCP) systems with

FIPS

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:

- PowerPC architecture;

- x86 architecture;

- iSCSI Boot Firmware Table Attributes driver;

- GPU drivers;

- HID subsystem;

- InfiniBand drivers;

- Media drivers;

- MemoryStick subsystem;

- Network drivers;

- NTB driver;

- PCI subsystem;

- SCSI subsystem;

- Thermal...

Read the Full Advisory

Topics%20covered

Topics Covered

security advisory critical ubuntu linux-kernel information-disclosure system-compromise

Update Instructions

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

Ubuntu 20.04 LTS
   linux-image-5.4.0-1147-aws-fips  5.4.0-1147.157+fips1
                                   Available with Ubuntu Pro
   linux-image-5.4.0-1150-gcp-fips  5.4.0-1150.159+fips1
                                   Available with Ubuntu Pro
   linux-image-aws-fips            5.4.0.1147.94
                                   Available with Ubuntu Pro
   linux-image-gcp-fips            5.4.0.1150.92
                                   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-7585-2

https://ubuntu.com/security/notices/USN-7585-1

CVE-2021-47211, CVE-2022-49636, CVE-2023-53034, CVE-2024-53168,

CVE-2024-56551, CVE-2024-58093, CVE-2025-21956, CVE-2025-21957,

CVE-2025-21959, CVE-2025-21991, CVE-2025-21992, CVE-2025-21993,

CVE-2025-21996, CVE-2025-22004, CVE-2025-22005, CVE-2025-22007,

CVE-2025-22018, CVE-2025-22020, CVE-2025-22021, CVE-2025-22035,

CVE-2025-22045, CVE-2025-22054, CVE-2025-22063, CVE-2025-22071,

CVE-2025-22073, CVE-2025-22079, CVE-2025-22086, CVE-2025-2312,

CVE-2025-23136, CVE-2025-37937, CVE-2025-38637, CVE-2025-39735

Severity
critical
Lowest
Low
Medium
High
Critical

Ubuntu Security Notice USN-7585-2

Topics%20covered

Topics Covered

security advisory critical ubuntu linux-kernel information-disclosure system-compromise

Package Information

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