Integer Overflow or Wraparound Affecting openexr-debuginfo package, versions <0:3.1.5-1.amzn2023.0.9


Severity

Recommended
0.0
high
0
10

Based on Amazon Linux security rating.

Threat Intelligence

EPSS
0.01% (2nd percentile)

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  • Snyk IDSNYK-AMZN2023-OPENEXRDEBUGINFO-16351891
  • published3 May 2026
  • disclosed6 Apr 2026

Introduced: 6 Apr 2026

CVE-2026-34588  (opens in a new tab)
CWE-190  (opens in a new tab)

How to fix?

Upgrade Amazon-Linux:2023 openexr-debuginfo to version 0:3.1.5-1.amzn2023.0.9 or higher.
This issue was patched in ALAS2023-2026-1612.

NVD Description

Note: Versions mentioned in the description apply only to the upstream openexr-debuginfo package and not the openexr-debuginfo package as distributed by Amazon-Linux. See How to fix? for Amazon-Linux:2023 relevant fixed versions and status.

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.

CVSS Base Scores

version 3.1