CVE-2026-43909
Description
OpenImageIO is a toolset for reading, writing, and manipulating image files of any image file format relevant to VFX / animation. Prior to 3.0.18.0 and 3.1.13.0, a signed 32-bit integer overflow in the loop index expression i * 4 inside SwapRGBABytes() causes the function to compute a large negative pointer offset when processing kABGR DPX images with large dimensions. The immediate crash is an out-of-bounds read (the memcpy at line 45 reads from &input[i * 4] first), but the subsequent write operations at lines 46–49 target the same wrapped offset — making this a combined OOB read+write primitive. This vulnerability is fixed in 3.0.18.0 and 3.1.13.0.
CVSS Details
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H Threat Intelligence
Weaknesses 3
Affected Products 4
| Vendor | Product | Version | Range |
|---|---|---|---|
| openimageio | openimageio | * | <3.0.18.0 |
| openimageio | openimageio | * | ≥3.1.4.0 – <3.1.13.0 |
| openimageio | openimageio | 3.2.0.0 | any |
| openimageio | openimageio | 3.2.0.2 | any |
References 1
- github.com https://github.com/AcademySoftwareFoundation/OpenImageIO/security/advisories/GHSA-g267-j53j-5258
Remediation
No remediation data recorded yet
Check vendor advisories and the NVD entry for patch availability.