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Openimageio OpenimageioOpenImageIO: Integer wraparound in bounds check of decode_pixel leads to out-of-bounds read in TGA paletted image decoder

Risk 31

Severity

5.5

AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H

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::decodepixel computes k + palbytespp as unsigned 32-bit arithmetic. When k = 0xFFFFFFFC and palbytespp = 4, the addition wraps to 0, which compares less than paletteallocsize 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.

First published (updated )

CVE-2026-43996

Openimageio OpenimageioOpenImageIO: Signed integer overflow in ConvertCbYCrYToRGB leads to heap out-of-bounds write in DPX 4:2:2 decoder

Risk 77

Severity

8.8

Integer Overflow

AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

Last updated 21 May 2026

1 / 2

Source: Ubuntu

First published (updated )

CVE-2026-43908

Openimageio OpenimageioOpenImageIO: Signed integer overflow in SwapRGBABytes loop index leads to out-of-bounds read/write in DPX ABGR decoder

Risk 77

Severity

8.8

Integer Overflow

AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

Last updated 22 May 2026

1 / 2

Source: Ubuntu

First published (updated )

CVE-2026-43909

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Openimageio OpenimageioOpenImageIO: Integer wraparound in bounds check of decode_pixel leads to out-of-bounds read in TGA paletted image decoder

Openimageio OpenimageioOpenImageIO: Signed integer overflow in ConvertCbYCrYToRGB leads to heap out-of-bounds write in DPX 4:2:2 decoder

Openimageio OpenimageioOpenImageIO: Signed integer overflow in SwapRGBABytes loop index leads to out-of-bounds read/write in DPX ABGR decoder

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Contact