ALAS2023-2026-3124

References: CVE-2026-84450  CVE-2026-84451 
FAQs regarding Amazon Linux ALAS/CVE Severity

Issue Overview:

Incomplete fix for GHSA-73p7-m7gg-w2jv leaves libheif 1.23.1 vulnerable to an out-of-bounds read

NOTE: https://github.com/strukturag/libheif/security/advisories/GHSA-hh47-fhqr-cj2r (CVE-2026-84450)

Incomplete fix for GHSA-73p7-m7gg-w2jv leaves libheif 1.23.1 vulnerable to an out-of-bounds read

NOTE: https://github.com/strukturag/libheif/security/advisories/GHSA-hh47-fhqr-cj2r (CVE-2026-84451)

Issue Correction:
Run dnf update libheif --releasever 2023.12.20260928 or dnf update --advisory ALAS2023-2026-3124 --releasever 2023.12.20260928 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:
    libheif-debuginfo-1.23.4-1.amzn2023.aarch64
    heif-pixbuf-loader-debuginfo-1.23.4-1.amzn2023.aarch64
    libheif-tools-1.23.4-1.amzn2023.aarch64
    libheif-tools-debuginfo-1.23.4-1.amzn2023.aarch64
    heif-pixbuf-loader-1.23.4-1.amzn2023.aarch64
    libheif-devel-1.23.4-1.amzn2023.aarch64
    libheif-1.23.4-1.amzn2023.aarch64
    libheif-debugsource-1.23.4-1.amzn2023.aarch64

src:
    libheif-1.23.4-1.amzn2023.src

x86_64:
    heif-pixbuf-loader-debuginfo-1.23.4-1.amzn2023.x86_64
    libheif-debuginfo-1.23.4-1.amzn2023.x86_64
    libheif-tools-debuginfo-1.23.4-1.amzn2023.x86_64
    libheif-tools-1.23.4-1.amzn2023.x86_64
    libheif-debugsource-1.23.4-1.amzn2023.x86_64
    libheif-devel-1.23.4-1.amzn2023.x86_64
    heif-pixbuf-loader-1.23.4-1.amzn2023.x86_64
    libheif-1.23.4-1.amzn2023.x86_64