| Name | CVE-2026-43996 |
| 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, the bounds check in TGAInput::decode_pixel computes k + palbytespp as unsigned 32-bit arithmetic. When k = 0xFFFFFFFC and palbytespp = 4, the addition wraps to 0, which compares less than palette_alloc_size and passes the check. The subsequent palette access uses the unwrapped k (0xFFFFFFFC) as the index, reading ~4 GB past the start of the palette buffer — SEGV. This vulnerability is fixed in 3.0.18.0 and 3.1.13.0. |
| Source | CVE (at NVD; CERT, ENISA, LWN, oss-sec, fulldisc, Debian ELTS, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, GitHub advisories/code/issues, web search, more) |
| Debian Bugs | 1139915 |
The table below lists information on source packages.
| Source Package | Release | Version | Status |
|---|---|---|---|
| openimageio (PTS) | bullseye (security), bullseye | 2.2.10.1+dfsg-1+deb11u1 | fixed |
| bookworm | 2.4.7.1+dfsg-2 | fixed | |
| trixie | 2.5.18.0+dfsg-1 | vulnerable | |
| forky, sid | 2.5.19.1+dfsg-2 | vulnerable |
The information below is based on the following data on fixed versions.
| Package | Type | Release | Fixed Version | Urgency | Origin | Debian Bugs |
|---|---|---|---|---|---|---|
| openimageio | source | bullseye | (not affected) | |||
| openimageio | source | bookworm | (not affected) | |||
| openimageio | source | (unstable) | (unfixed) | 1139915 |
[trixie] - openimageio <no-dsa> (Minor issue)
[bookworm] - openimageio <not-affected> (The wrapping palette bounds check in TGAInput::decode_pixel was introduced in 2.4.8.1 by the CVE-2023-22845 fix; palette_alloc_size not present)
[bullseye] - openimageio <not-affected> (The wrapping palette bounds check in TGAInput::decode_pixel was introduced in 2.4.8.1 by the CVE-2023-22845 fix; palette_alloc_size not present)
https://github.com/AcademySoftwareFoundation/OpenImageIO/security/advisories/GHSA-mq8j-73c4-cr55