Amazon Linux 2023 Security Advisory: ALAS2023-2026-1893
Advisory Released Date: 2026-06-22
Advisory Updated Date: 2026-06-22
Severity:
Important
Issue Overview:
A denial-of-service vulnerability was found in Envoy's HTTP/2 HPACK header compression implementation. A remote attacker could send a specially crafted HTTP/2 request that triggers disproportionately large memory allocations on the server, leading to resource exhaustion and denial of service. (CVE-2026-47774)
Affected Packages:
ecs-service-connect-agent
Issue Correction:
Run dnf update ecs-service-connect-agent --releasever 2023.12.20260622 or dnf update --advisory ALAS2023-2026-1893 --releasever 2023.12.20260622 to update your system.
More information on how to update your system can be found on this page: Amazon Linux 2023 documentation
New Packages:
aarch64:
ecs-service-connect-agent-v1.34.13.2-1.amzn2023.aarch64
src:
ecs-service-connect-agent-v1.34.13.2-1.amzn2023.src
x86_64:
ecs-service-connect-agent-v1.34.13.2-1.amzn2023.x86_64