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Ubuntu 18.04 LTS: 6972-3 Critical: Linux Kernel Denial Of Service

ubuntu
Calendar Grey August 23, 2024
Dist Ubuntu Esm H88
Multiple vulnerabilities resolved in the Linux kernel of Ubuntu tailored for Azure cloud platforms, mitigating potential denial of service threats.
Several security issues were fixed in the Linux kernel.

Summary

Several security issues were fixed in the Linux kernel.

Software Description:

- linux-azure-4.15: Linux kernel for Microsoft Azure Cloud systems

- linux-azure: Linux kernel for Microsoft Azure Cloud systems

Details:

Yuxuan Hu discovered that the Bluetooth RFCOMM protocol driver in the Linux

Kernel contained a race condition, leading to a NULL pointer dereference.

An attacker could possibly use this to cause a denial of service (system

crash). (CVE-2024-22099)

It was discovered that a race condition existed in the Bluetooth subsystem

in the Linux kernel, leading to a null pointer dereference vulnerability. A

privileged local attacker could use this to possibly cause a denial of

service (system crash). (CVE-2024-24860)

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:

- SuperH RISC architecture;

- User-Mode Linux (UML);

...

Read the Full Advisory

Topics%20covered

Topics Covered

security advisory denial of service system update ubuntu linux kernel bluetooth cloud systems

Update Instructions

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

Ubuntu 18.04 LTS
   linux-image-4.15.0-1180-azure   4.15.0-1180.195
                                   Available with Ubuntu Pro
   linux-image-azure-lts-18.04     4.15.0.1180.148
                                   Available with Ubuntu Pro

Ubuntu 16.04 LTS
   linux-image-4.15.0-1180-azure   4.15.0-1180.195~16.04.1
                                   Available with Ubuntu Pro
   linux-image-azure               4.15.0.1180.195~16.04.1
                                   Available with Ubuntu Pro

Ubuntu 14.04 LTS
   linux-image-4.15.0-1180-azure   4.15.0-1180.195~14.04.1
                                   Available with Ubuntu Pro
   linux-image-azure               4.15.0.1180.195~14.04.1
                                   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-6972-3

https://ubuntu.com/security/notices/USN-6972-2

https://ubuntu.com/security/notices/USN-6972-1

CVE-2023-52470, CVE-2023-52629, CVE-2023-52644, CVE-2023-52760,

CVE-2023-52806, CVE-2024-22099, CVE-2024-24860, CVE-2024-26600,

CVE-2024-26654, CVE-2024-26679, CVE-2024-26687, CVE-2024-26903,

CVE-2024-35835, CVE-2024-35955, CVE-2024-36901, CVE-2024-36940,

CVE-2024-39292, CVE-2024-39484

Severity
critical
Lowest
Low
Medium
High
Critical

Ubuntu Security Notice USN-6972-3

Topics%20covered

Topics Covered

security advisory denial of service system update ubuntu linux kernel bluetooth cloud systems

Package Information

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