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Ubuntu 22.04 LTS USN-5693-1 Critical: Linux Kernel Several Critical Flaws

ubuntu
Calendar Grey October 19, 2022
Dist Ubuntu Esm H88
Immediate patches for Ubuntu's Linux kernel tackle severe vulnerabilities, safeguarding systems against failures and bolstering protection.
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:

David Bouman and Billy Jheng Bing Jhong discovered that a race condition

existed in the io_uring subsystem in the Linux kernel, 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-2022-2602)

Duoming Zhou discovered that race conditions existed in the timer handling

implementation of the Linux kernel's Rose X.25 protocol layer, resulting in

use-after-free vulnerabilities. A local attacker could use this to cause a

denial of service (system crash). (CVE-2022-2318)

Hao Sun and Jiacheng Xu discovered that the NILFS file system

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-2022-...

Read the Full Advisory

Topics%20covered

Topics Covered

security advisory denial of service system crash use-after-free linux-oem

Update Instructions

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

Ubuntu 22.04 LTS:
   linux-image-5.17.0-1020-oem     5.17.0-1020.21
   linux-image-oem-22.04           5.17.0.1020.19
   linux-image-oem-22.04a          5.17.0.1020.19

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-5693-1

CVE-2022-2318, CVE-2022-2602, CVE-2022-2978, CVE-2022-3028,

CVE-2022-40768, CVE-2022-41674, CVE-2022-42719, CVE-2022-42720,

CVE-2022-42721, CVE-2022-42722

Severity
critical
Lowest
Low
Medium
High
Critical

October 19, 2022

Topics%20covered

Topics Covered

security advisory denial of service system crash use-after-free linux-oem

Package Information

https://launchpad.net/ubuntu/+source/linux-oem-5.17/5.17.0-1020.21

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