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Ubuntu 22.04 LTS USN-6465-2 Moderate Denial Of Service Risk

ubuntu
Calendar Grey November 1, 2023
Dist Ubuntu Esm H88
Countering numerous security weaknesses in Ubuntu 22.04 LTS's Linux kernel, particularly concerning denial of service threats. Maintain your security!
Several security issues were fixed in the Linux kernel.

Summary

Several security issues were fixed in the Linux kernel.

Software Description:

- linux-raspi: Linux kernel for Raspberry Pi systems

Details:

Yu Hao and Weiteng Chen discovered that the Bluetooth HCI UART driver in

the Linux kernel contained a race condition, leading to a null pointer

dereference vulnerability. A local attacker could use this to cause a

denial of service (system crash). (CVE-2023-31083)

Lin Ma discovered that the Netlink Transformation (XFRM) subsystem in the

Linux kernel contained a null pointer dereference vulnerability in some

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

service (system crash). (CVE-2023-3772)

Topics%20covered

Topics Covered

security advisory moderate denial of service ubuntu linux kernel linux-raspi

Update Instructions

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

Ubuntu 22.04 LTS:
   linux-image-5.15.0-1042-raspi   5.15.0-1042.45
   linux-image-raspi               5.15.0.1042.40
   linux-image-raspi-nolpae        5.15.0.1042.40

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-6465-2

https://ubuntu.com/security/notices/USN-6465-1

CVE-2023-31083, CVE-2023-3772

Ubuntu Security Notice USN-6465-2

Topics%20covered

Topics Covered

security advisory moderate denial of service ubuntu linux kernel linux-raspi

Package Information

https://launchpad.net/ubuntu/+source/linux-raspi/5.15.0-1042.45

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