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Ubuntu 22.10 USN-6187-1 Moderate: Kernel Denial Of Service Threats

ubuntu
Calendar Grey June 22, 2023
Dist Ubuntu Esm H88
Recent Ubuntu 22.10 kernel patches tackle multiple security issues, raising alarms about potential denial of service and dangers linked to use-after-free vulnerabilities
Several security issues were fixed in the Linux kernel.

Summary

Several security issues were fixed in the Linux kernel.

Software Description:

- linux-ibm: Linux kernel for IBM cloud systems

Details:

William Zhao discovered that the Traffic Control (TC) subsystem in the

Linux kernel did not properly handle network packet retransmission in

certain situations. A local attacker could use this to cause a denial of

service (kernel deadlock). (CVE-2022-4269)

It was discovered that the TUN/TAP driver in the Linux kernel did not

properly initialize socket data. A local attacker could use this to cause a

denial of service (system crash). (CVE-2023-1076)

It was discovered that the Real-Time Scheduling Class implementation in the

Linux kernel contained a type confusion vulnerability in some situations. A

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

(CVE-2023-1077)

It was discovered that the ASUS HID driver in the Linux kernel did not

properly handle device removal, leading to a use-after-free vulne...

Read the Full Advisory

Topics%20covered

Topics Covered

security advisory denial of service Ubuntu kernel issues use-after-free linux-ibm

Update Instructions

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

Ubuntu 22.10:
   linux-image-5.19.0-1024-ibm     5.19.0-1024.26
   linux-image-ibm                 5.19.0.1024.21

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-6187-1

CVE-2022-4269, CVE-2023-1076, CVE-2023-1077, CVE-2023-1079,

CVE-2023-1670, CVE-2023-1859, CVE-2023-1998, CVE-2023-25012,

CVE-2023-2985

June 22, 2023

Topics%20covered

Topics Covered

security advisory denial of service Ubuntu kernel issues use-after-free linux-ibm

Package Information

https://launchpad.net/ubuntu/+source/linux-ibm/5.19.0-1024.26

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