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Ubuntu 16.04 ESM USN-5981-1 Critical: Kernel DoS Exploits

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Calendar Grey March 28, 2023
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Multiple vulnerabilities in Ubuntu addressed concerning memory leaks, unexpected system failures, and service disruption risks.
Several security issues were fixed in the Linux kernel.

Summary

Several security issues were fixed in the Linux kernel.

Software Description:

- linux-aws-hwe: Linux kernel for Amazon Web Services (AWS-HWE) systems

- linux-hwe: Linux hardware enablement (HWE) kernel

- linux-oracle: Linux kernel for Oracle Cloud systems

Details:

It was discovered that the System V IPC implementation in the Linux kernel

did not properly handle large shared memory counts. A local attacker could

use this to cause a denial of service (memory exhaustion). (CVE-2021-3669)

It was discovered that a use-after-free vulnerability existed in the SGI

GRU driver in the Linux kernel. A local attacker could possibly use this to

cause a denial of service (system crash) or possibly execute arbitrary

code. (CVE-2022-3424)

Ziming Zhang discovered that the VMware Virtual GPU DRM driver in the Linux

kernel contained an out-of-bounds write vulnerability. A local attacker

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

(CVE-2022-36280)

Hyunwoo K...

Read the Full Advisory

Topics%20covered

Topics Covered

security advisory code execution DoS kernel ubuntu memory exhaustion system crash

Update Instructions

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

Ubuntu 16.04 ESM:
   linux-image-4.15.0-1116-oracle  4.15.0-1116.127~16.04.1
   linux-image-4.15.0-1153-aws     4.15.0-1153.166~16.04.1
   linux-image-4.15.0-208-generic  4.15.0-208.219~16.04.1
   linux-image-4.15.0-208-lowlatency  4.15.0-208.219~16.04.1
   linux-image-aws-hwe             4.15.0.1153.136
   linux-image-generic-hwe-16.04   4.15.0.208.193
   linux-image-lowlatency-hwe-16.04  4.15.0.208.193
   linux-image-oem                 4.15.0.208.193
   linux-image-oracle              4.15.0.1116.97
   linux-image-virtual-hwe-16.04   4.15.0.208.193

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-5981-1

CVE-2021-3669, CVE-2022-3424, CVE-2022-36280, CVE-2022-41218,

CVE-2022-47929, CVE-2023-0045, CVE-2023-0266, CVE-2023-0394,

CVE-2023-23455, CVE-2023-23559, CVE-2023-28328

Severity
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Critical

March 28, 2023

Topics%20covered

Topics Covered

security advisory code execution DoS kernel ubuntu memory exhaustion system crash

Package Information

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