Rapid7 Vulnerability & Exploit Database

Amazon Linux AMI 2: CVE-2021-38300: Security patch for kernel, microvm-kernel (Multiple Advisories)

Free InsightVM Trial No Credit Card Necessary
Watch Demo See how it all works
Back to Search

Amazon Linux AMI 2: CVE-2021-38300: Security patch for kernel, microvm-kernel (Multiple Advisories)

Severity
7
CVSS
(AV:L/AC:L/Au:N/C:C/I:C/A:C)
Published
09/20/2021
Created
11/06/2021
Added
11/05/2021
Modified
09/28/2023

Description

arch/mips/net/bpf_jit.c in the Linux kernel before 5.4.10 can generate undesirable machine code when transforming unprivileged cBPF programs, allowing execution of arbitrary code within the kernel context. This occurs because conditional branches can exceed the 128 KB limit of the MIPS architecture.

Solution(s)

  • amazon-linux-ami-2-upgrade-kernel
  • amazon-linux-ami-2-upgrade-kernel-debuginfo
  • amazon-linux-ami-2-upgrade-kernel-debuginfo-common-aarch64
  • amazon-linux-ami-2-upgrade-kernel-debuginfo-common-x86_64
  • amazon-linux-ami-2-upgrade-kernel-devel
  • amazon-linux-ami-2-upgrade-kernel-headers
  • amazon-linux-ami-2-upgrade-kernel-livepatch-4-14-252-195-481
  • amazon-linux-ami-2-upgrade-kernel-tools
  • amazon-linux-ami-2-upgrade-kernel-tools-debuginfo
  • amazon-linux-ami-2-upgrade-kernel-tools-devel
  • amazon-linux-ami-2-upgrade-microvm-kernel
  • amazon-linux-ami-2-upgrade-microvm-kernel-debuginfo
  • amazon-linux-ami-2-upgrade-microvm-kernel-debuginfo-common-aarch64
  • amazon-linux-ami-2-upgrade-microvm-kernel-debuginfo-common-x86_64
  • amazon-linux-ami-2-upgrade-microvm-kernel-devel
  • amazon-linux-ami-2-upgrade-microvm-kernel-headers
  • amazon-linux-ami-2-upgrade-perf
  • amazon-linux-ami-2-upgrade-perf-debuginfo
  • amazon-linux-ami-2-upgrade-python-perf
  • amazon-linux-ami-2-upgrade-python-perf-debuginfo

References

insightVM

Advanced vulnerability management analytics and reporting.
Key Features
Free InsightVM Trial View All Features

With Rapid7 live dashboards, I have a clear view of all the assets on my network, which ones can be exploited, and what I need to do in order to reduce the risk in my environment in real-time. No other tool gives us that kind of value and insight.

– Scott Cheney, Manager of Information Security, Sierra View Medical Center

;