Amazon Linux 2023 Security Advisory: ALAS2023-2026-2037
Advisory Released Date: 2026-08-04
Advisory Updated Date: 2026-08-04
Severity:
Important
Issue Overview:
7-Zip XZ Decompression Heap-based Buffer Overflow Remote Code Execution Vulnerability. This vulnerability allows remote attackers to execute arbitrary code on affected installations of 7-Zip. User interaction is required to exploit this vulnerability in that the target must visit a malicious page or open a malicious file. The specific flaw exists within the processing of XZ chunked data. Crafted XZ-compressed data can trigger an overflow of a heap-based buffer. An attacker can leverage this vulnerability to execute code in the context of the current process. Was ZDI-CAN-30169. (CVE-2026-14266)
Affected Packages:
7zip
Issue Correction:
Run dnf update 7zip --releasever 2023.12.20260803 or dnf update --advisory ALAS2023-2026-2037 --releasever 2023.12.20260803 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:
7zip-standalone-all-debuginfo-26.02-17.amzn2023.0.1.aarch64
7zip-reduced-26.02-17.amzn2023.0.1.aarch64
7zip-standalone-debuginfo-26.02-17.amzn2023.0.1.aarch64
7zip-reduced-debuginfo-26.02-17.amzn2023.0.1.aarch64
7zip-26.02-17.amzn2023.0.1.aarch64
7zip-standalone-all-26.02-17.amzn2023.0.1.aarch64
7zip-standalone-26.02-17.amzn2023.0.1.aarch64
7zip-debuginfo-26.02-17.amzn2023.0.1.aarch64
7zip-debugsource-26.02-17.amzn2023.0.1.aarch64
src:
7zip-26.02-17.amzn2023.0.1.src
x86_64:
7zip-debuginfo-26.02-17.amzn2023.0.1.x86_64
7zip-standalone-all-debuginfo-26.02-17.amzn2023.0.1.x86_64
7zip-reduced-debuginfo-26.02-17.amzn2023.0.1.x86_64
7zip-reduced-26.02-17.amzn2023.0.1.x86_64
7zip-standalone-debuginfo-26.02-17.amzn2023.0.1.x86_64
7zip-26.02-17.amzn2023.0.1.x86_64
7zip-standalone-all-26.02-17.amzn2023.0.1.x86_64
7zip-standalone-26.02-17.amzn2023.0.1.x86_64
7zip-debugsource-26.02-17.amzn2023.0.1.x86_64