OpenEXR provides the specification and reference implementation of the EXR file format, an image storage format for the motion picture industry. From 3.4.0 to before 3.4.9, a missing bounds check on the dataWindow attribute in EXR file headers allows an attacker to trigger a signed integer overflow in generic_unpack(). By setting dataWindow.min.x to a large negative value, OpenEXRCore computes an enormous image width, which is later used in a signed integer multiplication that overflows, causing the process to terminate with SIGILL via UBSan. This vulnerability is fixed in 3.4.9.
CVSS Details
- CVSS 3.1 Base Score: 6.5
- CVSS 3.1 Vector: (CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H)
Covered by Rapid7
| Product | Vendor Advisory | Solution File | Added | Published |
|---|---|---|---|---|
| Alpine Linux | — | Upgrade openexr | Jun 18, 2026 | Apr 6, 2026 |
| Amazon_linux_2023 | — | Upgrade openexrUpgrade openexr-libs-debuginfoUpgrade openexr-develUpgrade openexr-debuginfoUpgrade openexr-libsUpgrade openexr-debugsource | May 4, 2026 | Apr 6, 2026 |
| Freebsd | — | Upgrade openexr | Apr 6, 2026 | Apr 2, 2026 |
| Redhat_linux | — | No solution exists | Jul 17, 2026 | Apr 6, 2026 |
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