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CVE-2026-84449

libheif hOp_RGB24_32_to_YCbCr Memory Access Error / SEGV

CVSS 3.1 3.7 LOWCheck source for fixed versionsKEV status unknown
Original advisory

Historical advisory recorded 23 Oct 2026 15:48:27 UTC. Read the latest advisory.

cve-program · CVE-2026-84449

Published

libheif is a HEIF and AVIF file format decoder and encoder. Prior to 1.19.6, Op_RGB24_32_to_YCbCr::convert_colorspace() stores image-plane strides in an integer width that can overflow for extremely large RGB images created through heif_image_create() and heif_image_add_plane(). The resulting wrapped stride causes the conversion loop in libheif/color-conversion/rgb2yuv.cc to compute an invalid input pointer and read beyond the allocated interleaved plane while heif_context_encode_image() performs RGB-to-YCbCr conversion. This can crash the encoding process. This issue is fixed in version 1.19.6.

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23 Oct 2026 15:48:27 UTC

libheif hOp_RGB24_32_to_YCbCr Memory Access Error / SEGV

cve-program · CVE-2026-84449 · Published

This historical link shows only this version and versions saved before it. Browse all advisory history.

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Sources read 15 Nov 23:13 UTC · 274 of 275 readable · 250 fully read · 18 waiting for GitHub's hourly limit · documentation 461/469 current

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