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Ubuntu 20.04, 18.04 LTS: USN-6118-1 Critical: Oracle Kernel Issues

ubuntu
Calendar Grey May 30, 2023
Dist Ubuntu Esm H88
Important security flaws in Oracle Linux kernel resolved on May 30, 2023; apply updates for enhanced protection.
Several security issues were fixed in the Linux kernel.

Summary

Several security issues were fixed in the Linux kernel.

Software Description:

- linux-oracle: Linux kernel for Oracle Cloud systems

- linux-oracle-5.4: Linux kernel for Oracle Cloud systems

Details:

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)

Jordy Zomer and Alexandra Sandulescu discovered that the Linux kernel did

not properly implement speculative execution barriers in usercopy functions

in certain situations. A local attacker could use this to expose sensitive

information (kernel memory). (CVE-2023-0459)

It was discovered that the TLS subsystem 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) or possibly expose

sensitive information. (CVE...

Read the Full Advisory

Topics%20covered

Topics Covered

security advisory denial of service information exposure ubuntu system crash oracle kernel

Update Instructions

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

Ubuntu 20.04 LTS:
   linux-image-5.4.0-1101-oracle   5.4.0-1101.110
   linux-image-oracle-lts-20.04    5.4.0.1101.94

Ubuntu 18.04 LTS:
   linux-image-5.4.0-1101-oracle   5.4.0-1101.110~18.04.1
   linux-image-oracle              5.4.0.1101.110~18.04.73

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-6118-1

CVE-2022-3707, CVE-2023-0459, CVE-2023-1075, CVE-2023-1078,

CVE-2023-1118, CVE-2023-1513, CVE-2023-2162, CVE-2023-32269

Severity
critical
Lowest
Low
Medium
High
Critical

May 30, 2023

Topics%20covered

Topics Covered

security advisory denial of service information exposure ubuntu system crash oracle kernel

Package Information

https://launchpad.net/ubuntu/+source/linux-oracle/5.4.0-1101.110
https://launchpad.net/ubuntu/+source/linux-oracle-5.4/5.4.0-1101.110~18.04.1

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