Amazon Linux 2023 Security Advisory: ALAS2023-2026-1456
Advisory Released Date: 2026-03-05
Advisory Updated Date: 2026-03-05
FAQs regarding Amazon Linux ALAS/CVE Severity
Improper validation of type "oidvector" in PostgreSQL allows a database user to disclose a few bytes of server memory. We have not ruled out viability of attacks that arrange for presence of confidential information in disclosed bytes, but they seem unlikely. Versions before PostgreSQL 18.2, 17.8, 16.12, 15.16, and 14.21 are affected. (CVE-2026-2003)
Missing validation of type of input in PostgreSQL intarray extension selectivity estimator function allows an object creator to execute arbitrary code as the operating system user running the database. Versions before PostgreSQL 18.2, 17.8, 16.12, 15.16, and 14.21 are affected. (CVE-2026-2004)
Heap buffer overflow in PostgreSQL pgcrypto allows a ciphertext provider to execute arbitrary code as the operating system user running the database. Versions before PostgreSQL 18.2, 17.8, 16.12, 15.16, and 14.21 are affected. (CVE-2026-2005)
Missing validation of multibyte character length in PostgreSQL text manipulation allows a database user to issue crafted queries that achieve a buffer overrun. That suffices to execute arbitrary code as the operating system user running the database. Versions before PostgreSQL 18.2, 17.8, 16.12, 15.16, and 14.21 are affected. (CVE-2026-2006)
Affected Packages:
postgresql15
Issue Correction:
Run dnf update postgresql15 --releasever 2023.10.20260302 or dnf update --advisory ALAS2023-2026-1456 --releasever 2023.10.20260302 to update your system.
More information on how to update your system can be found on this page: Amazon Linux 2023 documentation
aarch64:
postgresql15-test-debuginfo-15.16-1.amzn2023.0.1.aarch64
postgresql15-server-debuginfo-15.16-1.amzn2023.0.1.aarch64
postgresql15-plperl-15.16-1.amzn2023.0.1.aarch64
postgresql15-upgrade-devel-debuginfo-15.16-1.amzn2023.0.1.aarch64
postgresql15-pltcl-debuginfo-15.16-1.amzn2023.0.1.aarch64
postgresql15-debuginfo-15.16-1.amzn2023.0.1.aarch64
postgresql15-plperl-debuginfo-15.16-1.amzn2023.0.1.aarch64
postgresql15-private-libs-debuginfo-15.16-1.amzn2023.0.1.aarch64
postgresql15-llvmjit-debuginfo-15.16-1.amzn2023.0.1.aarch64
postgresql15-contrib-debuginfo-15.16-1.amzn2023.0.1.aarch64
postgresql15-upgrade-devel-15.16-1.amzn2023.0.1.aarch64
postgresql15-15.16-1.amzn2023.0.1.aarch64
postgresql15-static-15.16-1.amzn2023.0.1.aarch64
postgresql15-plpython3-15.16-1.amzn2023.0.1.aarch64
postgresql15-plpython3-debuginfo-15.16-1.amzn2023.0.1.aarch64
postgresql15-docs-debuginfo-15.16-1.amzn2023.0.1.aarch64
postgresql15-server-devel-debuginfo-15.16-1.amzn2023.0.1.aarch64
postgresql15-private-libs-15.16-1.amzn2023.0.1.aarch64
postgresql15-server-15.16-1.amzn2023.0.1.aarch64
postgresql15-docs-15.16-1.amzn2023.0.1.aarch64
postgresql15-upgrade-15.16-1.amzn2023.0.1.aarch64
postgresql15-private-devel-15.16-1.amzn2023.0.1.aarch64
postgresql15-contrib-15.16-1.amzn2023.0.1.aarch64
postgresql15-llvmjit-15.16-1.amzn2023.0.1.aarch64
postgresql15-test-15.16-1.amzn2023.0.1.aarch64
postgresql15-upgrade-debuginfo-15.16-1.amzn2023.0.1.aarch64
postgresql15-server-devel-15.16-1.amzn2023.0.1.aarch64
postgresql15-debugsource-15.16-1.amzn2023.0.1.aarch64
postgresql15-pltcl-15.16-1.amzn2023.0.1.aarch64
noarch:
postgresql15-test-rpm-macros-15.16-1.amzn2023.0.1.noarch
src:
postgresql15-15.16-1.amzn2023.0.1.src
x86_64:
postgresql15-upgrade-devel-debuginfo-15.16-1.amzn2023.0.1.x86_64
postgresql15-upgrade-debuginfo-15.16-1.amzn2023.0.1.x86_64
postgresql15-server-debuginfo-15.16-1.amzn2023.0.1.x86_64
postgresql15-test-15.16-1.amzn2023.0.1.x86_64
postgresql15-plperl-debuginfo-15.16-1.amzn2023.0.1.x86_64
postgresql15-pltcl-debuginfo-15.16-1.amzn2023.0.1.x86_64
postgresql15-server-devel-debuginfo-15.16-1.amzn2023.0.1.x86_64
postgresql15-docs-15.16-1.amzn2023.0.1.x86_64
postgresql15-test-debuginfo-15.16-1.amzn2023.0.1.x86_64
postgresql15-llvmjit-15.16-1.amzn2023.0.1.x86_64
postgresql15-server-15.16-1.amzn2023.0.1.x86_64
postgresql15-llvmjit-debuginfo-15.16-1.amzn2023.0.1.x86_64
postgresql15-private-devel-15.16-1.amzn2023.0.1.x86_64
postgresql15-docs-debuginfo-15.16-1.amzn2023.0.1.x86_64
postgresql15-private-libs-debuginfo-15.16-1.amzn2023.0.1.x86_64
postgresql15-private-libs-15.16-1.amzn2023.0.1.x86_64
postgresql15-plpython3-debuginfo-15.16-1.amzn2023.0.1.x86_64
postgresql15-static-15.16-1.amzn2023.0.1.x86_64
postgresql15-plpython3-15.16-1.amzn2023.0.1.x86_64
postgresql15-contrib-debuginfo-15.16-1.amzn2023.0.1.x86_64
postgresql15-upgrade-devel-15.16-1.amzn2023.0.1.x86_64
postgresql15-15.16-1.amzn2023.0.1.x86_64
postgresql15-server-devel-15.16-1.amzn2023.0.1.x86_64
postgresql15-pltcl-15.16-1.amzn2023.0.1.x86_64
postgresql15-debuginfo-15.16-1.amzn2023.0.1.x86_64
postgresql15-debugsource-15.16-1.amzn2023.0.1.x86_64
postgresql15-plperl-15.16-1.amzn2023.0.1.x86_64
postgresql15-upgrade-15.16-1.amzn2023.0.1.x86_64
postgresql15-contrib-15.16-1.amzn2023.0.1.x86_64