Amazon Linux 2 (EOS) Security Advisory: ALAS2-2026-3984
Advisory Released Date: 2026-10-12
Advisory Updated Date: 2026-10-12
Severity:
Important
Issue Overview:
A flaw was found in rpmbuild. When rpmbuild processes a crafted tarball in tarball mode, a specially designed tar member name can lead to macro injection. This vulnerability allows a remote attacker to execute arbitrary code on the system by convincing a user to build a malicious tarball. (CVE-2026-78367)
Affected Packages:
rpm
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 rpm or yum update --advisory ALAS2-2026-3984 to update your system.
New Packages:
aarch64:
rpm-4.11.3-48.amzn2.0.6.aarch64
rpm-libs-4.11.3-48.amzn2.0.6.aarch64
rpm-build-libs-4.11.3-48.amzn2.0.6.aarch64
rpm-devel-4.11.3-48.amzn2.0.6.aarch64
rpm-build-4.11.3-48.amzn2.0.6.aarch64
rpm-sign-4.11.3-48.amzn2.0.6.aarch64
python2-rpm-4.11.3-48.amzn2.0.6.aarch64
python3-rpm-4.11.3-48.amzn2.0.6.aarch64
rpm-plugin-systemd-inhibit-4.11.3-48.amzn2.0.6.aarch64
rpm-debuginfo-4.11.3-48.amzn2.0.6.aarch64
i686:
rpm-4.11.3-48.amzn2.0.6.i686
rpm-libs-4.11.3-48.amzn2.0.6.i686
rpm-build-libs-4.11.3-48.amzn2.0.6.i686
rpm-devel-4.11.3-48.amzn2.0.6.i686
rpm-build-4.11.3-48.amzn2.0.6.i686
rpm-sign-4.11.3-48.amzn2.0.6.i686
python2-rpm-4.11.3-48.amzn2.0.6.i686
python3-rpm-4.11.3-48.amzn2.0.6.i686
rpm-plugin-systemd-inhibit-4.11.3-48.amzn2.0.6.i686
rpm-debuginfo-4.11.3-48.amzn2.0.6.i686
noarch:
rpm-apidocs-4.11.3-48.amzn2.0.6.noarch
rpm-cron-4.11.3-48.amzn2.0.6.noarch
src:
rpm-4.11.3-48.amzn2.0.6.src
x86_64:
rpm-4.11.3-48.amzn2.0.6.x86_64
rpm-libs-4.11.3-48.amzn2.0.6.x86_64
rpm-build-libs-4.11.3-48.amzn2.0.6.x86_64
rpm-devel-4.11.3-48.amzn2.0.6.x86_64
rpm-build-4.11.3-48.amzn2.0.6.x86_64
rpm-sign-4.11.3-48.amzn2.0.6.x86_64
python2-rpm-4.11.3-48.amzn2.0.6.x86_64
python3-rpm-4.11.3-48.amzn2.0.6.x86_64
rpm-plugin-systemd-inhibit-4.11.3-48.amzn2.0.6.x86_64
rpm-debuginfo-4.11.3-48.amzn2.0.6.x86_64