Amazon Linux 2 Security Advisory: ALAS-2021-1675
Advisory Release Date: 2021-07-01 01:00 Pacific
Advisory Updated Date: 2021-07-01 20:27 Pacific
Severity:
Medium
Issue Overview:
A flaw was found in kernel/bpf/verifier.c in BPF in the Linux kernel. An incorrect limit is enforced for pointer arithmetic operations which can be abused to perform out-of-bounds reads and writes in kernel memory, leading to local privilege escalation. The highest threat from this vulnerability is to data confidentiality and integrity as well as system availability. (CVE-2021-33200)
Affected Packages:
kernel
Note:
This advisory is applicable to Amazon Linux 2 (AL2) Core repository. Visit this FAQ section for the difference between AL2 Core and AL2 Extras advisories.
Issue Correction:
Run yum update kernel to update your system.
New Packages:
aarch64:
kernel-4.14.232-177.418.amzn2.aarch64
kernel-headers-4.14.232-177.418.amzn2.aarch64
kernel-debuginfo-common-aarch64-4.14.232-177.418.amzn2.aarch64
perf-4.14.232-177.418.amzn2.aarch64
perf-debuginfo-4.14.232-177.418.amzn2.aarch64
python-perf-4.14.232-177.418.amzn2.aarch64
python-perf-debuginfo-4.14.232-177.418.amzn2.aarch64
kernel-tools-4.14.232-177.418.amzn2.aarch64
kernel-tools-devel-4.14.232-177.418.amzn2.aarch64
kernel-tools-debuginfo-4.14.232-177.418.amzn2.aarch64
kernel-devel-4.14.232-177.418.amzn2.aarch64
kernel-debuginfo-4.14.232-177.418.amzn2.aarch64
i686:
kernel-headers-4.14.232-177.418.amzn2.i686
src:
kernel-4.14.232-177.418.amzn2.src
x86_64:
kernel-4.14.232-177.418.amzn2.x86_64
kernel-headers-4.14.232-177.418.amzn2.x86_64
kernel-debuginfo-common-x86_64-4.14.232-177.418.amzn2.x86_64
perf-4.14.232-177.418.amzn2.x86_64
perf-debuginfo-4.14.232-177.418.amzn2.x86_64
python-perf-4.14.232-177.418.amzn2.x86_64
python-perf-debuginfo-4.14.232-177.418.amzn2.x86_64
kernel-tools-4.14.232-177.418.amzn2.x86_64
kernel-tools-devel-4.14.232-177.418.amzn2.x86_64
kernel-tools-debuginfo-4.14.232-177.418.amzn2.x86_64
kernel-devel-4.14.232-177.418.amzn2.x86_64
kernel-debuginfo-4.14.232-177.418.amzn2.x86_64
kernel-livepatch-4.14.232-177.418-1.0-0.amzn2.x86_64