Amazon Linux 2 Security Advisory: ALAS2-2026-3810
Advisory Released Date: 2026-07-20
Advisory Updated Date: 2026-07-20
Severity:
Important
Issue Overview:
When using the "tarfile" module with a file opened in "streaming mode" (mode="r|") the tarfile module did not properly handle EOF, making archive parsing take exponentially longer. (CVE-2026-11972)
Affected Packages:
python
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 python or yum update --advisory ALAS2-2026-3810 to update your system.
New Packages:
aarch64:
python-2.7.18-1.amzn2.0.21.aarch64
python-libs-2.7.18-1.amzn2.0.21.aarch64
python-devel-2.7.18-1.amzn2.0.21.aarch64
python-tools-2.7.18-1.amzn2.0.21.aarch64
tkinter-2.7.18-1.amzn2.0.21.aarch64
python-test-2.7.18-1.amzn2.0.21.aarch64
python-debug-2.7.18-1.amzn2.0.21.aarch64
python-debuginfo-2.7.18-1.amzn2.0.21.aarch64
i686:
python-2.7.18-1.amzn2.0.21.i686
python-libs-2.7.18-1.amzn2.0.21.i686
python-devel-2.7.18-1.amzn2.0.21.i686
python-tools-2.7.18-1.amzn2.0.21.i686
tkinter-2.7.18-1.amzn2.0.21.i686
python-test-2.7.18-1.amzn2.0.21.i686
python-debug-2.7.18-1.amzn2.0.21.i686
python-debuginfo-2.7.18-1.amzn2.0.21.i686
src:
python-2.7.18-1.amzn2.0.21.src
x86_64:
python-2.7.18-1.amzn2.0.21.x86_64
python-libs-2.7.18-1.amzn2.0.21.x86_64
python-devel-2.7.18-1.amzn2.0.21.x86_64
python-tools-2.7.18-1.amzn2.0.21.x86_64
tkinter-2.7.18-1.amzn2.0.21.x86_64
python-test-2.7.18-1.amzn2.0.21.x86_64
python-debug-2.7.18-1.amzn2.0.21.x86_64
python-debuginfo-2.7.18-1.amzn2.0.21.x86_64