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Ubuntu 22.04 LTS USN-6123-1 Moderate: DoS Risks in OEM Kernel

ubuntu
Calendar Grey May 30, 2023
Dist Ubuntu Esm H88
Ubuntu 22.04 LTS obtains vital security patches for kernel exploits, mitigating denial of service threats and significant security breaches.
Several security issues were fixed in the Linux kernel.

Summary

Several security issues were fixed in the Linux kernel.

Software Description:

- linux-oem-6.0: Linux kernel for OEM systems

Details:

Patryk Sondej and Piotr Krysiuk discovered that a race condition existed in

the netfilter subsystem of the Linux kernel when processing batch requests,

leading to 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-2023-32233)

Reima Ishii discovered that the nested KVM implementation for Intel x86

processors in the Linux kernel did not properly validate control registers

in certain situations. An attacker in a guest VM could use this to cause a

denial of service (guest crash). (CVE-2023-30456)

It was discovered that the Xircom PCMCIA network device driver in the Linux

kernel did not properly handle device removal events. A physically

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

crash). (CVE-2023-1670)

...

Read the Full Advisory

Topics%20covered

Topics Covered

security advisory kernel update Ubuntu Denial of Service system crash

Update Instructions

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

Ubuntu 22.04 LTS:
   linux-image-6.0.0-1017-oem      6.0.0-1017.17
   linux-image-oem-22.04b          6.0.0.1017.17

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-6123-1

CVE-2023-1670, CVE-2023-2612, CVE-2023-26606, CVE-2023-30456,

CVE-2023-32233

May 30, 2023

Topics%20covered

Topics Covered

security advisory kernel update Ubuntu Denial of Service system crash

Package Information

https://launchpad.net/ubuntu/+source/linux-oem-6.0/6.0.0-1017.17

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