CVE-2026-62289
Publication date 13 August 2026
Last updated 2 September 2026
Ubuntu priority
Description
libheif is a HEIF and AVIF file format decoder and encoder. In 1.23.0 and earlier, a crafted HEIF or AVIF file containing a clean aperture box can reduce an image dimension to zero and crash or corrupt tiling results when heif_image_handle_get_image_tiling(handle, 1, &tiling) is called. ImageItem::get_heif_image_tiling() returns already transformed dimensions, and process_image_transformations_on_tiling() applies the clean aperture transformation again. The second application passes zero to Box_clap::left_rounded(0), where image_width minus one underflows and constructs Fraction(0xFFFFFFFF, 2). Debug builds reach an assertion and abort, while release builds can return a corrupt crop and zero-width tiling result. The affected implementation spans libheif/image-items/image_item.cc, libheif/context.cc, and libheif/box.cc. This issue is fixed in version 1.23.1.
Status
| Package | Ubuntu Release | Status |
|---|---|---|
| libheif | 26.04 LTS resolute |
Fixed 1.21.2-3ubuntu0.4
|
| 24.04 LTS noble |
Fixed 1.17.6-1ubuntu4.7
|
|
| 22.04 LTS jammy |
Fixed 1.12.0-2ubuntu0.1~esm4
|
|
| 20.04 LTS focal |
Fixed 1.6.1-1ubuntu0.1~esm4
|
|
| 18.04 LTS bionic |
Fixed 1.1.0-2ubuntu0.1~esm4
|
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CVSS version: CVSS v3.0
Base score
4.3 · Medium
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:L
References
Related Ubuntu Security Notices (USN)
- USN-8649-1
- libheif vulnerabilities
- 19 August 2026
- USN-8683-1
- libheif vulnerabilities
- 26 August 2026