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Ubuntu 20.04 LTS USN-6256-1 Critical: Multiple Kernel Issues

ubuntu
Calendar Grey July 26, 2023
Dist Ubuntu Esm H88
Multiple vulnerabilities addressed in Ubuntu kernel impacting IoT devices. It is advisable to update for improved security and reliability.
Several security issues were fixed in the Linux kernel.

Summary

Several security issues were fixed in the Linux kernel.

Software Description:

- linux-iot: Linux kernel for IoT platforms

Details:

Jiasheng Jiang discovered that the HSA Linux kernel driver for AMD Radeon

GPU devices did not properly validate memory allocation in certain

situations, leading to a null pointer dereference vulnerability. A local

attacker could use this to cause a denial of service (system crash).

(CVE-2022-3108)

Zheng Wang discovered that the Intel i915 graphics driver in the Linux

kernel did not properly handle certain error conditions, leading to a

double-free. A local attacker could possibly use this to cause a denial of

service (system crash). (CVE-2022-3707)

It was discovered that the infrared transceiver USB driver did not properly

handle USB control messages. A local attacker with physical access could

plug in a specially crafted USB device to cause a denial of service (memory

exhaustion). (CVE-2022-3903)

Haowei Yan discovered that...

Read the Full Advisory

Topics%20covered

Topics Covered

security advisory denial of service critical Ubuntu memory management kernel issues IoT platforms

Update Instructions

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

Ubuntu 20.04 LTS:
   linux-image-5.4.0-1017-iot      5.4.0-1017.18

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-6256-1

CVE-2022-3108, CVE-2022-3707, CVE-2022-3903, CVE-2022-4129,

CVE-2023-0458, CVE-2023-0459, CVE-2023-1073, CVE-2023-1074,

CVE-2023-1075, CVE-2023-1076, CVE-2023-1077, CVE-2023-1078,

CVE-2023-1079, CVE-2023-1118, CVE-2023-1281, CVE-2023-1380,

CVE-2023-1513, CVE-2023-1670, CVE-2023-1829, CVE-2023-1859,

CVE-2023-1998, CVE-2023-2162, CVE-2023-25012, CVE-2023-2612,

CVE-2023-26545, CVE-2023-2985, CVE-2023-30456, CVE-2023-31436,

CVE-2023-3161, CVE-2023-32233, CVE-2023-32269, CVE-2023-35788

Severity
critical
Lowest
Low
Medium
High
Critical

Ubuntu Security Notice USN-6256-1

Topics%20covered

Topics Covered

security advisory denial of service critical Ubuntu memory management kernel issues IoT platforms

Package Information

https://launchpad.net/ubuntu/+source/linux-iot/5.4.0-1017.18

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