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Ubuntu 22.04 LTS USN-6031-1 Critical: Kernel Use-After-Free DDoS

ubuntu
Calendar Grey April 19, 2023
Dist Ubuntu Esm H88
A range of security issues fixed in Ubuntu 22.04 LTS linux-oem-5.17 kernel upgrades to boost protection and robustness.
Several security issues were fixed in the Linux kernel.

Summary

Several security issues were fixed in the Linux kernel.

Software Description:

- linux-oem-5.17: Linux kernel for OEM systems

Details:

It was discovered that the Traffic-Control Index (TCINDEX) implementation

in the Linux kernel contained a use-after-free vulnerability. A local

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

possibly execute arbitrary code. (CVE-2023-1281)

It was discovered that the Integrity Measurement Architecture (IMA)

implementation in the Linux kernel did not properly enforce policy in

certain conditions. A privileged attacker could use this to bypass Kernel

lockdown restrictions. (CVE-2022-21505)

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)

It was discovered that a race condition existed in the SMSC UFX...

Read the Full Advisory

Topics%20covered

Topics Covered

security advisory denial of service critical memory leak ubuntu linux kernel use-after-free

Update Instructions

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

Ubuntu 22.04 LTS:
   linux-image-5.17.0-1030-oem     5.17.0-1030.31
   linux-image-oem-22.04           5.17.0.1030.28
   linux-image-oem-22.04a          5.17.0.1030.28

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-6031-1

CVE-2022-21505, CVE-2022-3903, CVE-2022-41849, CVE-2022-4382,

CVE-2023-1074, CVE-2023-1095, CVE-2023-1118, CVE-2023-1281,

CVE-2023-23559, CVE-2023-26607

Severity
critical
Lowest
Low
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Critical

April 19, 2023

Topics%20covered

Topics Covered

security advisory denial of service critical memory leak ubuntu linux kernel use-after-free

Package Information

https://launchpad.net/ubuntu/+source/linux-oem-5.17/5.17.0-1030.31

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