Bug 2538639 (CVE-2026-84449) - CVE-2026-84449 libheif: libheif: Denial of Service via integer overflow in image processing
Summary: CVE-2026-84449 libheif: libheif: Denial of Service via integer overflow in im...
Keywords:
Status: NEW
Alias: CVE-2026-84449
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
low
low
Target Milestone: ---
Assignee: Product Security DevOps Team
QA Contact:
URL:
Whiteboard:
Depends On: 2539267
Blocks:
TreeView+ depends on / blocked
 
Reported: 2026-09-22 19:49 UTC by OSIDB Bzimport
Modified: 2026-09-23 09:09 UTC (History)
0 users

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Description OSIDB Bzimport 2026-09-22 19:49:07 UTC 
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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