| Summary | 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. |
|---|---|
| Publication Date | May 15, 2026, 5:17 a.m. |
| Registration Date | May 17, 2026, 4:09 a.m. |
| Last Update | May 16, 2026, 10:16 a.m. |
| CVSS3.1 : MEDIUM | |
| スコア | 5.5 |
|---|---|
| Vector | CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H |
| 攻撃元区分(AV) | ローカル |
| 攻撃条件の複雑さ(AC) | 低 |
| 攻撃に必要な特権レベル(PR) | 不要 |
| 利用者の関与(UI) | 要 |
| 影響の想定範囲(S) | 変更なし |
| 機密性への影響(C) | なし |
| 完全性への影響(I) | なし |
| 可用性への影響(A) | 高 |
| Configuration1 | or higher | or less | more than | less than | |
| cpe:2.3:a:openimageio:openimageio:*:*:*:*:*:*:*:* | 3.0.18.0 | ||||
| cpe:2.3:a:openimageio:openimageio:*:*:*:*:*:*:*:* | 3.1.0.0 | 3.1.13.0 | |||
| cpe:2.3:a:openimageio:openimageio:3.2.0.0:dev:*:*:*:*:*:* | |||||
| cpe:2.3:a:openimageio:openimageio:3.2.0.2:dev:*:*:*:*:*:* | |||||