Amazon Linux 2023 Security Advisory: ALAS2023-2026-3404
Advisory Released Date: 2026-11-09
Advisory Updated Date: 2026-11-09
Severity:
Medium
Issue Overview:
A flaw in libcurl's handling of HTTP/2 Server Push streams, when the parent handle is set to share connections with other handles, can lead to use-after-free in the cleanup process. (CVE-2026-18924)
A flaw in libcurl makes it wrongly reuse an HTTP connection setup for a given hostname using Negotiate authentication, when the initial request is done using empty credentials. This can make user B's request get sent over user A's previously authenticated connection. (CVE-2026-19931)
Affected Packages:
curl
Issue Correction:
Run dnf update curl --releasever 2023.12.20261109 or dnf update --advisory ALAS2023-2026-3404 --releasever 2023.12.20261109 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:
libcurl-minimal-debuginfo-8.21.0-5.amzn2023.0.4.aarch64
libcurl-debuginfo-8.21.0-5.amzn2023.0.4.aarch64
curl-debugsource-8.21.0-5.amzn2023.0.4.aarch64
curl-debuginfo-8.21.0-5.amzn2023.0.4.aarch64
curl-minimal-debuginfo-8.21.0-5.amzn2023.0.4.aarch64
curl-8.21.0-5.amzn2023.0.4.aarch64
libcurl-minimal-8.21.0-5.amzn2023.0.4.aarch64
libcurl-8.21.0-5.amzn2023.0.4.aarch64
curl-minimal-8.21.0-5.amzn2023.0.4.aarch64
libcurl-devel-8.21.0-5.amzn2023.0.4.aarch64
src:
curl-8.21.0-5.amzn2023.0.4.src
x86_64:
libcurl-minimal-debuginfo-8.21.0-5.amzn2023.0.4.x86_64
curl-minimal-debuginfo-8.21.0-5.amzn2023.0.4.x86_64
curl-debuginfo-8.21.0-5.amzn2023.0.4.x86_64
curl-debugsource-8.21.0-5.amzn2023.0.4.x86_64
curl-minimal-8.21.0-5.amzn2023.0.4.x86_64
curl-8.21.0-5.amzn2023.0.4.x86_64
libcurl-debuginfo-8.21.0-5.amzn2023.0.4.x86_64
libcurl-minimal-8.21.0-5.amzn2023.0.4.x86_64
libcurl-8.21.0-5.amzn2023.0.4.x86_64
libcurl-devel-8.21.0-5.amzn2023.0.4.x86_64