Amazon Linux 2 Security Advisory: ALAS2-2026-3232
Advisory Released Date: 2026-04-14
Advisory Updated Date: 2026-04-14
nghttp2 is an implementation of the Hypertext Transfer Protocol version 2 in C. Prior to version 1.68.1, the nghttp2 library stops reading the incoming data when user facing public API `nghttp2_session_terminate_session` or `nghttp2_session_terminate_session2` is called by the application. They might be called internally by the library when it detects the situation that is subject to connection error. Due to the missing internal state validation, the library keeps reading the rest of the data after one of those APIs is called. Then receiving a malformed frame that causes FRAME_SIZE_ERROR causes assertion failure. nghttp2 v1.68.1 adds missing state validation to avoid assertion failure. No known workarounds are available. (CVE-2026-27135)
Affected Packages:
nghttp2
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 nghttp2 or yum update --advisory ALAS2-2026-3232 to update your system.
aarch64:
nghttp2-1.41.0-1.amzn2.0.6.aarch64
libnghttp2-1.41.0-1.amzn2.0.6.aarch64
libnghttp2-devel-1.41.0-1.amzn2.0.6.aarch64
nghttp2-debuginfo-1.41.0-1.amzn2.0.6.aarch64
i686:
nghttp2-1.41.0-1.amzn2.0.6.i686
libnghttp2-1.41.0-1.amzn2.0.6.i686
libnghttp2-devel-1.41.0-1.amzn2.0.6.i686
nghttp2-debuginfo-1.41.0-1.amzn2.0.6.i686
src:
nghttp2-1.41.0-1.amzn2.0.6.src
x86_64:
nghttp2-1.41.0-1.amzn2.0.6.x86_64
libnghttp2-1.41.0-1.amzn2.0.6.x86_64
libnghttp2-devel-1.41.0-1.amzn2.0.6.x86_64
nghttp2-debuginfo-1.41.0-1.amzn2.0.6.x86_64