Amazon Linux 2027 Preview Security Advisory: ALAS2027-2026-244
Advisory Released Date: 2026-10-26
Advisory Updated Date: 2026-11-02
Severity:
Important
Issue Overview:
Package updates are available for Amazon Linux 2027 that fix the following vulnerabilities:
CVE-2026-111497:
A vulnerability in the Node.js Brotli decoder can result in an out-of-bounds memory write when processing crafted Brotli input. Successful exploitation may lead to memory corruption and remote code execution.
Affected Packages:
brotli
Issue Correction:
Run dnf update brotli --releasever 2027.0.20261026 or dnf update --advisory ALAS2027-2026-244 --releasever 2027.0.20261026 to update your system.
New Packages:
aarch64:
libbrotli-debuginfo-1.2.1-1.amzn2027.aarch64
brotli-debugsource-1.2.1-1.amzn2027.aarch64
python3-brotli-debuginfo-1.2.1-1.amzn2027.aarch64
brotli-debuginfo-1.2.1-1.amzn2027.aarch64
libbrotli-1.2.1-1.amzn2027.aarch64
brotli-1.2.1-1.amzn2027.aarch64
python3-brotli-1.2.1-1.amzn2027.aarch64
brotli-devel-1.2.1-1.amzn2027.aarch64
src:
brotli-1.2.1-1.amzn2027.src
x86_64:
brotli-1.2.1-1.amzn2027.x86_64
brotli-debugsource-1.2.1-1.amzn2027.x86_64
python3-brotli-1.2.1-1.amzn2027.x86_64
libbrotli-1.2.1-1.amzn2027.x86_64
libbrotli-debuginfo-1.2.1-1.amzn2027.x86_64
brotli-devel-1.2.1-1.amzn2027.x86_64
brotli-debuginfo-1.2.1-1.amzn2027.x86_64
python3-brotli-debuginfo-1.2.1-1.amzn2027.x86_64