Amazon Linux 2023 Security Advisory: ALAS2023-2026-1509
Advisory Released Date: 2026-04-01
Advisory Updated Date: 2026-04-01
Severity:
Low
Issue Overview:
A vulnerability was determined in strukturag libheif up to 1.21.2. This affects the function vvdec_push_data2 of the file libheif/plugins/decoder_vvdec.cc of the component HEIF File Parser. Executing a manipulation of the argument size can lead to out-of-bounds read. The attack needs to be launched locally. The exploit has been publicly disclosed and may be utilized. This patch is called b97c8b5f198b27f375127cd597a35f2113544d03. It is advisable to implement a patch to correct this issue. (CVE-2026-3949)
Affected Packages:
libheif
Issue Correction:
Run dnf update libheif --releasever 2023.10.20260330 or dnf update --advisory ALAS2023-2026-1509 --releasever 2023.10.20260330 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:
heif-pixbuf-loader-debuginfo-1.19.8-1.amzn2023.0.4.aarch64
libheif-debuginfo-1.19.8-1.amzn2023.0.4.aarch64
libheif-tools-debuginfo-1.19.8-1.amzn2023.0.4.aarch64
libheif-devel-1.19.8-1.amzn2023.0.4.aarch64
heif-pixbuf-loader-1.19.8-1.amzn2023.0.4.aarch64
libheif-1.19.8-1.amzn2023.0.4.aarch64
libheif-tools-1.19.8-1.amzn2023.0.4.aarch64
libheif-debugsource-1.19.8-1.amzn2023.0.4.aarch64
src:
libheif-1.19.8-1.amzn2023.0.4.src
x86_64:
libheif-debuginfo-1.19.8-1.amzn2023.0.4.x86_64
libheif-tools-debuginfo-1.19.8-1.amzn2023.0.4.x86_64
libheif-1.19.8-1.amzn2023.0.4.x86_64
heif-pixbuf-loader-debuginfo-1.19.8-1.amzn2023.0.4.x86_64
libheif-debugsource-1.19.8-1.amzn2023.0.4.x86_64
libheif-tools-1.19.8-1.amzn2023.0.4.x86_64
heif-pixbuf-loader-1.19.8-1.amzn2023.0.4.x86_64
libheif-devel-1.19.8-1.amzn2023.0.4.x86_64