Amazon Linux 2 Security Advisory: ALAS2-2026-3267
Advisory Released Date: 2026-04-30
Advisory Updated Date: 2026-04-30
OpenEXR provides the specification and reference implementation of the EXR file format, an image storage format for the motion picture industry. From version 3.4.0 to before version 3.4.8, a crafted B44 or B44A EXR file can cause an out-of-bounds write in any application that decodes it via exr_decoding_run(). Consequences range from immediate crash (most likely) to corruption of adjacent heap allocations (layout-dependent). This issue has been patched in version 3.4.8. (CVE-2026-34544)
OpenEXR provides the specification and reference implementation of the EXR file format, an image storage format for the motion picture industry. From 3.1.0 to before 3.2.7, 3.3.9, and 3.4.9, internal_exr_undo_piz() advances the working wavelet pointer with signed 32-bit arithmetic. Because nx, ny, and wcount are int, a crafted EXR file can make this product overflow and wrap. The next channel then decodes from an incorrect address. The wavelet decode path operates in place, so this yields both out-of-bounds reads and out-of-bounds writes. This vulnerability is fixed in 3.2.7, 3.3.9, and 3.4.9. (CVE-2026-34588)
Affected Packages:
OpenEXR
Note:
This advisory is applicable to Amazon Linux 2 (AL2) Core repository. Visit this FAQ section for the difference between AL2 Core and AL2 Extras advisories.
Issue Correction:
Run yum update OpenEXR or yum update --advisory ALAS2-2026-3267 to update your system.
aarch64:
OpenEXR-1.7.1-8.amzn2.0.5.aarch64
OpenEXR-devel-1.7.1-8.amzn2.0.5.aarch64
OpenEXR-libs-1.7.1-8.amzn2.0.5.aarch64
OpenEXR-debuginfo-1.7.1-8.amzn2.0.5.aarch64
i686:
OpenEXR-1.7.1-8.amzn2.0.5.i686
OpenEXR-devel-1.7.1-8.amzn2.0.5.i686
OpenEXR-libs-1.7.1-8.amzn2.0.5.i686
OpenEXR-debuginfo-1.7.1-8.amzn2.0.5.i686
src:
OpenEXR-1.7.1-8.amzn2.0.5.src
x86_64:
OpenEXR-1.7.1-8.amzn2.0.5.x86_64
OpenEXR-devel-1.7.1-8.amzn2.0.5.x86_64
OpenEXR-libs-1.7.1-8.amzn2.0.5.x86_64
OpenEXR-debuginfo-1.7.1-8.amzn2.0.5.x86_64