Amazon Linux 2 Security Advisory: ALAS2-2026-3372
Advisory Released Date: 2026-06-22
Advisory Updated Date: 2026-06-22
Severity:
Important
Issue Overview:
Denial of service in HTTP/2 cookie request header counting (CVE-2026-49975)
Affected Packages:
mod_http2
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 mod_http2 or yum update --advisory ALAS2-2026-3372 to update your system.
New Packages:
aarch64:
mod_http2-2.0.42-1.amzn2.0.1.aarch64
mod_http2-debuginfo-2.0.42-1.amzn2.0.1.aarch64
i686:
mod_http2-2.0.42-1.amzn2.0.1.i686
mod_http2-debuginfo-2.0.42-1.amzn2.0.1.i686
src:
mod_http2-2.0.42-1.amzn2.0.1.src
x86_64:
mod_http2-2.0.42-1.amzn2.0.1.x86_64
mod_http2-debuginfo-2.0.42-1.amzn2.0.1.x86_64