Out-of-bounds Write Affecting openexr package, versions <3.2.2-160000.5.1


Severity

Recommended
0.0
high
0
10

Based on SUSE Linux Enterprise Server security rating.

Threat Intelligence

EPSS
0.02% (6th percentile)

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  • Snyk IDSNYK-SLES1600-OPENEXR-15909908
  • published5 Apr 2026
  • disclosed26 Mar 2026

Introduced: 26 Mar 2026

CVE-2026-27622  (opens in a new tab)
CWE-787  (opens in a new tab)

How to fix?

Upgrade SLES:16.0.0 openexr to version 3.2.2-160000.5.1 or higher.

NVD Description

Note: Versions mentioned in the description apply only to the upstream openexr package and not the openexr package as distributed by SLES. See How to fix? for SLES:16.0.0 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. In CompositeDeepScanLine::readPixels, per-pixel totals are accumulated in vector<unsigned int> total_sizes for attacker-controlled large counts across many parts, total_sizes[ptr] wraps modulo 2^32. overall_sample_count is then derived from wrapped totals and used in samples[channel].resize(overall_sample_count). Decode pointer setup/consumption proceeds with true sample counts, and write operations in core unpack (generic_unpack_deep_pointers) overrun the undersized composite sample buffer. This vulnerability is fixed in v3.2.6, v3.3.8, and v3.4.6.

CVSS Base Scores

version 3.1