Amazon Linux 2027 Preview Security Advisory: ALAS2027-2026-229
Advisory Release Date: 2026-10-26 09:00 Pacific
Advisory Updated Date: 2026-10-26 09:00 Pacific
Severity:
Important
Issue Overview:
Package updates are available for Amazon Linux 2027 that fix the following vulnerabilities:
CVE-2026-103111:
A flaw was found in pcre2. When an application processes attacker-controlled regular expressions using certain Just-In-Time (JIT) compiler interfaces, an out-of-bounds write with arbitrary data can occur. An attacker could exploit this vulnerability to achieve arbitrary code execution, corrupt memory, or cause a denial of service (DoS).
Affected Packages:
pcre2
Issue Correction:
Run dnf update pcre2 or dnf update --advisory ALAS2027-2026-229 to update your system.
New Packages:
aarch64:
pcre2-static-10.49-1.amzn2027.0.1.aarch64
pcre2-tools-debuginfo-10.49-1.amzn2027.0.1.aarch64
pcre2-utf16-10.49-1.amzn2027.0.1.aarch64
pcre2-debugsource-10.49-1.amzn2027.0.1.aarch64
pcre2-10.49-1.amzn2027.0.1.aarch64
pcre2-utf32-debuginfo-10.49-1.amzn2027.0.1.aarch64
pcre2-utf16-debuginfo-10.49-1.amzn2027.0.1.aarch64
pcre2-utf32-10.49-1.amzn2027.0.1.aarch64
pcre2-tools-10.49-1.amzn2027.0.1.aarch64
pcre2-debuginfo-10.49-1.amzn2027.0.1.aarch64
pcre2-devel-10.49-1.amzn2027.0.1.aarch64
noarch:
pcre2-syntax-10.49-1.amzn2027.0.1.noarch
src:
pcre2-10.49-1.amzn2027.0.1.src
x86_64:
pcre2-static-10.49-1.amzn2027.0.1.x86_64
pcre2-utf16-debuginfo-10.49-1.amzn2027.0.1.x86_64
pcre2-debuginfo-10.49-1.amzn2027.0.1.x86_64
pcre2-debugsource-10.49-1.amzn2027.0.1.x86_64
pcre2-utf32-10.49-1.amzn2027.0.1.x86_64
pcre2-devel-10.49-1.amzn2027.0.1.x86_64
pcre2-utf16-10.49-1.amzn2027.0.1.x86_64
pcre2-10.49-1.amzn2027.0.1.x86_64
pcre2-tools-debuginfo-10.49-1.amzn2027.0.1.x86_64
pcre2-tools-10.49-1.amzn2027.0.1.x86_64
pcre2-utf32-debuginfo-10.49-1.amzn2027.0.1.x86_64