Description
OpenEXR provides the specification and reference implementation of the EXR file format, an image storage format for the motion picture industry. In versions 3.2.0 through 3.2.4, 3.3.0 through 3.3.5, and 3.4.0 through 3.4.2, a memory safety bug in the legacy OpenEXR Python adapter (the deprecated OpenEXR.InputFile wrapper) allow crashes and likely code execution when opening attacker-controlled EXR files or when passing crafted Python objects. Integer overflow and unchecked allocation in InputFile.channel() and InputFile.channels() can lead to heap overflow (32 bit) or a NULL deref (64 bit). Versions 3.2.5, 3.3.6, and 3.4.3 contain a patch for the issue.
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| AcademySoftwareFoundation | openexr | >= 3.2.0, < 3.2.5, >= 3.3.0, < 3.3.6, >= 3.4.0, < 3.4.3 | — |
Fixed in Linux distributions
Distributions backport fixes, so the version that fixes this vulnerability differs per release — upgrade to at least the version shown. From the distributions' security trackers and advisories.
openSUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| openSUSE Tumbleweed | openexr | 3.4.3-1.1 | openSUSE-SU-2025:15741-1 |
Affected packages
| Ecosystem | Package | Affected | Fixed | Record |
|---|---|---|---|---|
| PyPI | openexr | >= 3.2.0, < 3.2.5 | 3.2.5 | GHSA-vh63-9mqx-wmjr |
| PyPI | openexr | >= 3.3.0, < 3.3.6 | 3.3.6 | GHSA-vh63-9mqx-wmjr |
| PyPI | openexr | >= 3.4.0, < 3.4.3 | 3.4.3 | GHSA-vh63-9mqx-wmjr |
| PyPI | openexr | >= 3.2.0, < 3.2.5 · >= 3.3.0, < 3.3.6 · >= 3.4.0, < 3.4.3 | 3.2.5, 3.3.6, 3.4.3 | PYSEC-2026-2851 |
Advisories 1
- openSUSE-SU-2025:15741-1 libIex-3_4-33-3.4.3-1.1 on GA media SUSE / openSUSE Security Updates · Mar 23, 2026