Amazon Linux 2 (EOS) Security Advisory: ALAS2-2026-3884
Advisory Released Date: 2026-08-31
Advisory Updated Date: 2026-08-31
A flaw was found in MRTG. When the MRTG daemon is started as a root user and subsequently drops privileges, a local, low-privileged attacker can exploit a symbolic link (symlink) following vulnerability. By influencing or pre-placing a symlink in the process ID (PID) file path, the attacker can trick the root process into changing the ownership of an arbitrary existing file to the daemon user. This can lead to local privilege escalation, allowing unauthorized access to or modification of sensitive files. (CVE-2026-72694)
Affected Packages:
mrtg
Note:
This advisory is applicable to Amazon Linux 2 (AL2) Core repository. Visit this FAQ section for the difference between AL2 Core and AL2 Extras advisories.
Issue Correction:
Run yum update mrtg or yum update --advisory ALAS2-2026-3884 to update your system.
aarch64:
mrtg-2.17.4-11.amzn2.0.3.aarch64
mrtg-debuginfo-2.17.4-11.amzn2.0.3.aarch64
i686:
mrtg-2.17.4-11.amzn2.0.3.i686
mrtg-debuginfo-2.17.4-11.amzn2.0.3.i686
src:
mrtg-2.17.4-11.amzn2.0.3.src
x86_64:
mrtg-2.17.4-11.amzn2.0.3.x86_64
mrtg-debuginfo-2.17.4-11.amzn2.0.3.x86_64