Amazon Linux 2023 Security Advisory: ALAS2023-2026-3417
Advisory Released Date: 2026-11-09
Advisory Updated Date: 2026-11-09
Severity:
Important
Issue Overview:
A flaw was found in glib-networking. When establishing connections using Transport Layer Security (TLS) version 1.3, the client-side session cache does not limit the number of session tickets retained for a single host. A malicious server can exploit this by sending excessive session ticket messages, causing the client application to continuously consume memory. This unbounded memory growth can exhaust system memory, resulting in a Denial of Service (DoS). (CVE-2026-103963)
Affected Packages:
glib-networking
Issue Correction:
Run dnf update glib-networking --releasever 2023.12.20261109 or dnf update --advisory ALAS2023-2026-3417 --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:
glib-networking-debugsource-2.80.0-187.amzn2023.0.2.aarch64
glib-networking-debuginfo-2.80.0-187.amzn2023.0.2.aarch64
glib-networking-tests-debuginfo-2.80.0-187.amzn2023.0.2.aarch64
glib-networking-tests-2.80.0-187.amzn2023.0.2.aarch64
glib-networking-2.80.0-187.amzn2023.0.2.aarch64
src:
glib-networking-2.80.0-187.amzn2023.0.2.src
x86_64:
glib-networking-debugsource-2.80.0-187.amzn2023.0.2.x86_64
glib-networking-tests-debuginfo-2.80.0-187.amzn2023.0.2.x86_64
glib-networking-debuginfo-2.80.0-187.amzn2023.0.2.x86_64
glib-networking-tests-2.80.0-187.amzn2023.0.2.x86_64
glib-networking-2.80.0-187.amzn2023.0.2.x86_64