Amazon Linux 2023 Security Advisory: ALAS2023-2026-1858
Advisory Released Date: 2026-06-22
Advisory Updated Date: 2026-06-22
Severity:
Important
Issue Overview:
Due to an Improper Input Validation bug, Squid is vulnerable to
a Heap-based Buffer Overflow attack against cache digests.
This problem allows a trusted server to perform a Heap-based
Buffer Overflow when sending maliciously crafted replies to
cache_digest request messages.
This attack is limited to Squid instances that have been
compiled with the --enable-cache-digests option. (CVE-2026-50012)
Affected Packages:
squid
Issue Correction:
Run dnf update squid --releasever 2023.12.20260622 or dnf update --advisory ALAS2023-2026-1858 --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:
squid-debuginfo-6.13-1.amzn2023.0.5.aarch64
squid-debugsource-6.13-1.amzn2023.0.5.aarch64
squid-6.13-1.amzn2023.0.5.aarch64
src:
squid-6.13-1.amzn2023.0.5.src
x86_64:
squid-debuginfo-6.13-1.amzn2023.0.5.x86_64
squid-debugsource-6.13-1.amzn2023.0.5.x86_64
squid-6.13-1.amzn2023.0.5.x86_64