Amazon Linux 2023 Security Advisory: ALAS2023-2026-1820
Advisory Released Date: 2026-06-08
Advisory Updated Date: 2026-06-08
Severity:
Important
Issue Overview:
A heap buffer overflow vulnerability (GHSL-2026-140) exists in 7-Zip version 26.00, caused by an under-allocation in the NTFS compressed stream buffer (GetCuSize shift UB), potentially allowing attackers to exploit this issue for arbitrary code execution or application crashes. (CVE-2026-48095)
Affected Packages:
7zip
Issue Correction:
Run dnf update 7zip --releasever 2023.12.20260608 or dnf update --advisory ALAS2023-2026-1820 --releasever 2023.12.20260608 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-26.01-14.amzn2023.0.1.aarch64
7zip-standalone-debuginfo-26.01-14.amzn2023.0.1.aarch64
7zip-standalone-26.01-14.amzn2023.0.1.aarch64
7zip-26.01-14.amzn2023.0.1.aarch64
7zip-debuginfo-26.01-14.amzn2023.0.1.aarch64
7zip-reduced-26.01-14.amzn2023.0.1.aarch64
7zip-standalone-all-26.01-14.amzn2023.0.1.aarch64
7zip-reduced-debuginfo-26.01-14.amzn2023.0.1.aarch64
7zip-debugsource-26.01-14.amzn2023.0.1.aarch64
src:
7zip-26.01-14.amzn2023.0.1.src
x86_64:
7zip-standalone-all-debuginfo-26.01-14.amzn2023.0.1.x86_64
7zip-standalone-debuginfo-26.01-14.amzn2023.0.1.x86_64
7zip-standalone-all-26.01-14.amzn2023.0.1.x86_64
7zip-debuginfo-26.01-14.amzn2023.0.1.x86_64
7zip-reduced-debuginfo-26.01-14.amzn2023.0.1.x86_64
7zip-standalone-26.01-14.amzn2023.0.1.x86_64
7zip-reduced-26.01-14.amzn2023.0.1.x86_64
7zip-26.01-14.amzn2023.0.1.x86_64
7zip-debugsource-26.01-14.amzn2023.0.1.x86_64