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Ubuntu 22.04 LTS: USN-7591-3 important: linux kernel access control issue

ubuntu
Calendar Grey June 24, 2025
Dist Ubuntu Esm H88
Stay updated on critical security fixes for Ubuntu 22.04 LTS Linux kernel with access control vulnerabilities.
Several security issues were fixed in the Linux kernel.

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:

Michael Randrianantenaina discovered that the Bluetooth driver in the Linux

Kernel contained an improper access control vulnerability. A nearby

attacker could use this to connect a rougue device and possibly execute

arbitrary code. (CVE-2024-8805)

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;

- ACPI drivers;

- Clock framework an...

Read the Full Advisory

Topics%20covered

Topics Covered

security advisory important ubuntu linux-kernel access-control information-exposure

Update Instructions

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

Ubuntu 22.04 LTS
   linux-image-5.15.0-1079-intel-iot-realtime  5.15.0-1079.81
                                   Available with Ubuntu Pro
   linux-image-5.15.0-1086-realtime  5.15.0-1086.95
                                   Available with Ubuntu Pro
   linux-image-intel-iot-realtime  5.15.0.1079.83
                                   Available with Ubuntu Pro
   linux-image-realtime            5.15.0.1086.90
                                   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-7591-3

https://ubuntu.com/security/notices/USN-7591-2

https://ubuntu.com/security/notices/USN-7591-1

CVE-2022-49636, CVE-2022-49728, CVE-2023-53034, CVE-2024-36945,

CVE-2024-42230, CVE-2024-46753, CVE-2024-46812, CVE-2024-46821,

CVE-2024-53144, CVE-2024-56664, CVE-2024-58093, CVE-2024-8805,

CVE-2025-21941, CVE-2025-21956, CVE-2025-21957, CVE-2025-21959,

CVE-2025-21962, CVE-2025-21963, CVE-2025-21964, CVE-2025-21968,

CVE-2025-21970, CVE-2025-21975, CVE-2025-21981, CVE-2025-21991,

CVE-2025-21992, CVE-2025-21994, CVE-2025-21996, CVE-2025-21999,

CVE-2025-22004, CVE-2025-22005, CVE-2025-22007, CVE-2025-22008,

CVE-2025-22010, CVE-2025-22014, CVE-2025-22018, CVE-2025-22020,

CVE-2025-22021, CVE-2025-22025, CVE-2025-22035, CVE-2025-22044,

CVE-2025-22045, CVE-2025-22050, CVE-2025-22054, CVE-2025-22055,

CVE-2025-22056, CVE-2025-22060, CVE-2025-22063, CVE-2025-22066,

CVE-2025-22071, CVE-2025-22073, CVE-2025-22075, CVE-2025-22079,

CVE-2025-22081, CVE-2025-22086, CVE-2025-22089, CVE-2025-22097,

CVE-2025-2312, CVE-2025-23136, CVE-2025-23138, CVE-2025-37785,

CVE-2025-37889, CVE-2025-37937, CVE-2025-38152, CVE-2025-38575,

CVE-2025-38637, CVE-2025-39728, CVE-2025-39735

Severity
important
Lowest
Low
Medium
High
Critical

Ubuntu Security Notice USN-7591-3

Topics%20covered

Topics Covered

security advisory important ubuntu linux-kernel access-control information-exposure

Package Information

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