Amazon Linux 2023 Security Advisory: ALAS2023-2026-3186
Advisory Released Date: 2026-10-12
Advisory Updated Date: 2026-10-12
Severity:
Important
Issue Overview:
A stack-based buffer overflow flaw was found in fetchmail when built with NTLM support. A malicious or compromised mail server advertising NTLM authentication can send a crafted Type 2 challenge that causes fetchmail to write past a fixed stack buffer while building the NTLM authenticate response. This may lead to remote code execution depending on stack-frame layout, or to authentication failure or process termination under memory hardening. (CVE-2026-94184)
Affected Packages:
fetchmail
Issue Correction:
Run dnf update fetchmail --releasever 2023.12.20261012 or dnf update --advisory ALAS2023-2026-3186 --releasever 2023.12.20261012 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:
fetchmail-debuginfo-6.5.7-1.amzn2023.0.1.aarch64
fetchmail-6.5.7-1.amzn2023.0.1.aarch64
fetchmail-debugsource-6.5.7-1.amzn2023.0.1.aarch64
src:
fetchmail-6.5.7-1.amzn2023.0.1.src
x86_64:
fetchmail-debuginfo-6.5.7-1.amzn2023.0.1.x86_64
fetchmail-6.5.7-1.amzn2023.0.1.x86_64
fetchmail-debugsource-6.5.7-1.amzn2023.0.1.x86_64