# CVE-2026-32741: libheif: libheif is a HEIF and AVIF file format decoder and encoder

CVE-2026-32741 is fixed in 27 products on 1 platform, first by DEBIAN-CVE-2026-32741, released May 19, 2026. It is not reported as exploited. Patch Radar priority: High.

- Web page: https://patchblox.com/security/cve/CVE-2026-32741
- Priority: High
- CVSS: 7.1 (high)
- EPSS: 0.0034
- CISA KEV: not listed
- Exploited (vendor report): no
- Publicly disclosed: no
- Published: May 19, 2026

## Description

libheif is a HEIF and AVIF file format decoder and encoder. Versions 1.21.2 and below contain a heap buffer overflow in MaskImageCodec::decode_mask_image(). When decoding a HEIF file containing a mask image (mski), the function copies the full iloc extent data into a pixel buffer using memcpy(dst, data.data(), data.size()). The copy length data.size() is determined by the iloc extent in the file (attacker-controlled), while the destination buffer is sized based on the declared image dimensions. Because no upper-bound check exists on the data length, a crafted file whose iloc extent exceeds the pixel buffer allocation overflows the heap. The vulnerable single-memcpy branch is reached when the mskC property specifies bits_per_pixel = 8 and the ispe property declares an even width ≥ 64 (so that stride == width), with no changes to default security limits or external codec plugins required. This issue has been fixed in version 1.22.0.

## Where it's fixed

| Platform | Product | Fixed in | Fix | Released |
|---|---|---|---|---|
| Linux | heif-gdk-pixbuf Ubuntu 24.04.5 LTS (noble) | 1.17.6-1ubuntu4.4 | [heif-gdk-pixbuf 1.17.6-1ubuntu4.4](https://patchblox.com/security/data/fix/linux/ubuntu-noble-heif-gdk-pixbuf-1.17.6-1ubuntu4.4.md) | Jun 24, 2026 |
| Linux | heif-gdk-pixbuf Ubuntu 25.10 (questing) | 1.20.2-1ubuntu0.4 | [heif-gdk-pixbuf 1.20.2-1ubuntu0.4](https://patchblox.com/security/data/fix/linux/ubuntu-questing-heif-gdk-pixbuf-1.20.2-1ubuntu0.4.md) | Jun 24, 2026 |
| Linux | heif-gdk-pixbuf Ubuntu 26.04.1 LTS (resolute) | 1.21.2-3ubuntu0.1 | [heif-gdk-pixbuf 1.21.2-3ubuntu0.1](https://patchblox.com/security/data/fix/linux/ubuntu-resolute-heif-gdk-pixbuf-1.21.2-3ubuntu0.1.md) | Jul 21, 2026 |
| Linux | heif-pixbuf-loader amzn 2023 | 1.19.8-1.amzn2023.0.5 | [ALAS2023-2026-1814](https://patchblox.com/security/data/fix/linux/alas2023-2026-1814.md) | Jun 8, 2026 |
| Linux | heif-pixbuf-loader-debuginfo amzn 2023 | 1.19.8-1.amzn2023.0.5 | [ALAS2023-2026-1814](https://patchblox.com/security/data/fix/linux/alas2023-2026-1814.md) | Jun 8, 2026 |
| Linux | heif-thumbnailer Ubuntu 24.04.5 LTS (noble) | 1.17.6-1ubuntu4.4 | [heif-thumbnailer 1.17.6-1ubuntu4.4](https://patchblox.com/security/data/fix/linux/ubuntu-noble-heif-thumbnailer-1.17.6-1ubuntu4.4.md) | Jun 24, 2026 |
| Linux | heif-thumbnailer Ubuntu 25.10 (questing) | 1.20.2-1ubuntu0.4 | [heif-thumbnailer 1.20.2-1ubuntu0.4](https://patchblox.com/security/data/fix/linux/ubuntu-questing-heif-thumbnailer-1.20.2-1ubuntu0.4.md) | Jun 24, 2026 |
| Linux | heif-thumbnailer Ubuntu 26.04.1 LTS (resolute) | 1.21.2-3ubuntu0.1 | [heif-thumbnailer 1.21.2-3ubuntu0.1](https://patchblox.com/security/data/fix/linux/ubuntu-resolute-heif-thumbnailer-1.21.2-3ubuntu0.1.md) | Jul 21, 2026 |
| Linux | heif-view Ubuntu 25.10 (questing) | 1.20.2-1ubuntu0.4 | [heif-view 1.20.2-1ubuntu0.4](https://patchblox.com/security/data/fix/linux/ubuntu-questing-heif-view-1.20.2-1ubuntu0.4.md) | Jun 24, 2026 |
| Linux | heif-view Ubuntu 26.04.1 LTS (resolute) | 1.21.2-3ubuntu0.1 | [heif-view 1.21.2-3ubuntu0.1](https://patchblox.com/security/data/fix/linux/ubuntu-resolute-heif-view-1.21.2-3ubuntu0.1.md) | Jul 21, 2026 |
| Linux | libheif Debian 13.5 (trixie) | 1.19.8-1+deb13u1 | [DEBIAN-CVE-2026-32741](https://patchblox.com/security/data/fix/linux/debian-cve-2026-32741.md) | May 19, 2026 |
| Linux | libheif Debian 14 | 1.23.1-1 | [DEBIAN-CVE-2026-32741](https://patchblox.com/security/data/fix/linux/debian-cve-2026-32741.md) | May 19, 2026 |
| Linux | libheif amzn 2023 | 1.19.8-1.amzn2023.0.5 | [ALAS2023-2026-1814](https://patchblox.com/security/data/fix/linux/alas2023-2026-1814.md) | Jun 8, 2026 |
| Linux | libheif opensuse-leap 16.0 | 1.23.0-160000.1.1 | [OPENSUSE-SU-2026:20974-1](https://patchblox.com/security/data/fix/linux/opensuse-su-2026-20974-1.md) | Jun 17, 2026 |
| Linux | libheif sles 15.7 | 1.23.0-150700.3.15.1 | [SUSE-SU-2026:2622-1](https://patchblox.com/security/data/fix/linux/suse-su-2026-2622-1.md) | Jun 24, 2026 |
| Linux | libheif sles 16.0 | 1.23.0-160000.1.1 | [SUSE-SU-2026:22153-1](https://patchblox.com/security/data/fix/linux/suse-su-2026-22153-1.md) | Jun 17, 2026 |
| Linux | libheif-debuginfo amzn 2023 | 1.19.8-1.amzn2023.0.5 | [ALAS2023-2026-1814](https://patchblox.com/security/data/fix/linux/alas2023-2026-1814.md) | Jun 8, 2026 |
| Linux | libheif-debugsource amzn 2023 | 1.19.8-1.amzn2023.0.5 | [ALAS2023-2026-1814](https://patchblox.com/security/data/fix/linux/alas2023-2026-1814.md) | Jun 8, 2026 |
| Linux | libheif-devel amzn 2023 | 1.19.8-1.amzn2023.0.5 | [ALAS2023-2026-1814](https://patchblox.com/security/data/fix/linux/alas2023-2026-1814.md) | Jun 8, 2026 |
| Linux | libheif-examples Ubuntu 24.04.5 LTS (noble) | 1.17.6-1ubuntu4.4 | [libheif-examples 1.17.6-1ubuntu4.4](https://patchblox.com/security/data/fix/linux/ubuntu-noble-libheif-examples-1.17.6-1ubuntu4.4.md) | Jun 24, 2026 |
| Linux | libheif-examples Ubuntu 25.10 (questing) | 1.20.2-1ubuntu0.4 | [libheif-examples 1.20.2-1ubuntu0.4](https://patchblox.com/security/data/fix/linux/ubuntu-questing-libheif-examples-1.20.2-1ubuntu0.4.md) | Jun 24, 2026 |
| Linux | libheif-examples Ubuntu 26.04.1 LTS (resolute) | 1.21.2-3ubuntu0.1 | [libheif-examples 1.21.2-3ubuntu0.1](https://patchblox.com/security/data/fix/linux/ubuntu-resolute-libheif-examples-1.21.2-3ubuntu0.1.md) | Jul 21, 2026 |
| Linux | libheif-plugin-aomdec Ubuntu 24.04.5 LTS (noble) | 1.17.6-1ubuntu4.4 | [libheif-plugin-aomdec 1.17.6-1ubuntu4.4](https://patchblox.com/security/data/fix/linux/ubuntu-noble-libheif-plugin-aomdec-1.17.6-1ubuntu4.4.md) | Jun 24, 2026 |
| Linux | libheif-plugin-aomdec Ubuntu 25.10 (questing) | 1.20.2-1ubuntu0.4 | [libheif-plugin-aomdec 1.20.2-1ubuntu0.4](https://patchblox.com/security/data/fix/linux/ubuntu-questing-libheif-plugin-aomdec-1.20.2-1ubuntu0.4.md) | Jun 24, 2026 |
| Linux | libheif-plugin-aomdec Ubuntu 26.04.1 LTS (resolute) | 1.21.2-3ubuntu0.1 | [libheif-plugin-aomdec 1.21.2-3ubuntu0.1](https://patchblox.com/security/data/fix/linux/ubuntu-resolute-libheif-plugin-aomdec-1.21.2-3ubuntu0.1.md) | Jul 21, 2026 |
| Linux | libheif-plugin-aomenc Ubuntu 24.04.5 LTS (noble) | 1.17.6-1ubuntu4.4 | [libheif-plugin-aomenc 1.17.6-1ubuntu4.4](https://patchblox.com/security/data/fix/linux/ubuntu-noble-libheif-plugin-aomenc-1.17.6-1ubuntu4.4.md) | Jun 24, 2026 |
| Linux | libheif-plugin-aomenc Ubuntu 25.10 (questing) | 1.20.2-1ubuntu0.4 | [libheif-plugin-aomenc 1.20.2-1ubuntu0.4](https://patchblox.com/security/data/fix/linux/ubuntu-questing-libheif-plugin-aomenc-1.20.2-1ubuntu0.4.md) | Jun 24, 2026 |
| Linux | libheif-plugin-aomenc Ubuntu 26.04.1 LTS (resolute) | 1.21.2-3ubuntu0.1 | [libheif-plugin-aomenc 1.21.2-3ubuntu0.1](https://patchblox.com/security/data/fix/linux/ubuntu-resolute-libheif-plugin-aomenc-1.21.2-3ubuntu0.1.md) | Jul 21, 2026 |
| Linux | libheif-plugin-dav1d Ubuntu 24.04.5 LTS (noble) | 1.17.6-1ubuntu4.4 | [libheif-plugin-dav1d 1.17.6-1ubuntu4.4](https://patchblox.com/security/data/fix/linux/ubuntu-noble-libheif-plugin-dav1d-1.17.6-1ubuntu4.4.md) | Jun 24, 2026 |
| Linux | libheif-plugin-dav1d Ubuntu 25.10 (questing) | 1.20.2-1ubuntu0.4 | [libheif-plugin-dav1d 1.20.2-1ubuntu0.4](https://patchblox.com/security/data/fix/linux/ubuntu-questing-libheif-plugin-dav1d-1.20.2-1ubuntu0.4.md) | Jun 24, 2026 |
| Linux | libheif-plugin-dav1d Ubuntu 26.04.1 LTS (resolute) | 1.21.2-3ubuntu0.1 | [libheif-plugin-dav1d 1.21.2-3ubuntu0.1](https://patchblox.com/security/data/fix/linux/ubuntu-resolute-libheif-plugin-dav1d-1.21.2-3ubuntu0.1.md) | Jul 21, 2026 |
| Linux | libheif-plugin-ffmpegdec Ubuntu 24.04.5 LTS (noble) | 1.17.6-1ubuntu4.4 | [libheif-plugin-ffmpegdec 1.17.6-1ubuntu4.4](https://patchblox.com/security/data/fix/linux/ubuntu-noble-libheif-plugin-ffmpegdec-1.17.6-1ubuntu4.4.md) | Jun 24, 2026 |
| Linux | libheif-plugin-ffmpegdec Ubuntu 25.10 (questing) | 1.20.2-1ubuntu0.4 | [libheif-plugin-ffmpegdec 1.20.2-1ubuntu0.4](https://patchblox.com/security/data/fix/linux/ubuntu-questing-libheif-plugin-ffmpegdec-1.20.2-1ubuntu0.4.md) | Jun 24, 2026 |
| Linux | libheif-plugin-ffmpegdec Ubuntu 26.04.1 LTS (resolute) | 1.21.2-3ubuntu0.1 | [libheif-plugin-ffmpegdec 1.21.2-3ubuntu0.1](https://patchblox.com/security/data/fix/linux/ubuntu-resolute-libheif-plugin-ffmpegdec-1.21.2-3ubuntu0.1.md) | Jul 21, 2026 |
| Linux | libheif-plugin-j2kdec Ubuntu 24.04.5 LTS (noble) | 1.17.6-1ubuntu4.4 | [libheif-plugin-j2kdec 1.17.6-1ubuntu4.4](https://patchblox.com/security/data/fix/linux/ubuntu-noble-libheif-plugin-j2kdec-1.17.6-1ubuntu4.4.md) | Jun 24, 2026 |
| Linux | libheif-plugin-j2kdec Ubuntu 25.10 (questing) | 1.20.2-1ubuntu0.4 | [libheif-plugin-j2kdec 1.20.2-1ubuntu0.4](https://patchblox.com/security/data/fix/linux/ubuntu-questing-libheif-plugin-j2kdec-1.20.2-1ubuntu0.4.md) | Jun 24, 2026 |
| Linux | libheif-plugin-j2kdec Ubuntu 26.04.1 LTS (resolute) | 1.21.2-3ubuntu0.1 | [libheif-plugin-j2kdec 1.21.2-3ubuntu0.1](https://patchblox.com/security/data/fix/linux/ubuntu-resolute-libheif-plugin-j2kdec-1.21.2-3ubuntu0.1.md) | Jul 21, 2026 |
| Linux | libheif-plugin-j2kenc Ubuntu 24.04.5 LTS (noble) | 1.17.6-1ubuntu4.4 | [libheif-plugin-j2kenc 1.17.6-1ubuntu4.4](https://patchblox.com/security/data/fix/linux/ubuntu-noble-libheif-plugin-j2kenc-1.17.6-1ubuntu4.4.md) | Jun 24, 2026 |
| Linux | libheif-plugin-j2kenc Ubuntu 25.10 (questing) | 1.20.2-1ubuntu0.4 | [libheif-plugin-j2kenc 1.20.2-1ubuntu0.4](https://patchblox.com/security/data/fix/linux/ubuntu-questing-libheif-plugin-j2kenc-1.20.2-1ubuntu0.4.md) | Jun 24, 2026 |
| Linux | libheif-plugin-j2kenc Ubuntu 26.04.1 LTS (resolute) | 1.21.2-3ubuntu0.1 | [libheif-plugin-j2kenc 1.21.2-3ubuntu0.1](https://patchblox.com/security/data/fix/linux/ubuntu-resolute-libheif-plugin-j2kenc-1.21.2-3ubuntu0.1.md) | Jul 21, 2026 |
| Linux | libheif-plugin-jpegdec Ubuntu 24.04.5 LTS (noble) | 1.17.6-1ubuntu4.4 | [libheif-plugin-jpegdec 1.17.6-1ubuntu4.4](https://patchblox.com/security/data/fix/linux/ubuntu-noble-libheif-plugin-jpegdec-1.17.6-1ubuntu4.4.md) | Jun 24, 2026 |
| Linux | libheif-plugin-jpegdec Ubuntu 25.10 (questing) | 1.20.2-1ubuntu0.4 | [libheif-plugin-jpegdec 1.20.2-1ubuntu0.4](https://patchblox.com/security/data/fix/linux/ubuntu-questing-libheif-plugin-jpegdec-1.20.2-1ubuntu0.4.md) | Jun 24, 2026 |
| Linux | libheif-plugin-jpegdec Ubuntu 26.04.1 LTS (resolute) | 1.21.2-3ubuntu0.1 | [libheif-plugin-jpegdec 1.21.2-3ubuntu0.1](https://patchblox.com/security/data/fix/linux/ubuntu-resolute-libheif-plugin-jpegdec-1.21.2-3ubuntu0.1.md) | Jul 21, 2026 |
| Linux | libheif-plugin-jpegenc Ubuntu 24.04.5 LTS (noble) | 1.17.6-1ubuntu4.4 | [libheif-plugin-jpegenc 1.17.6-1ubuntu4.4](https://patchblox.com/security/data/fix/linux/ubuntu-noble-libheif-plugin-jpegenc-1.17.6-1ubuntu4.4.md) | Jun 24, 2026 |
| Linux | libheif-plugin-jpegenc Ubuntu 25.10 (questing) | 1.20.2-1ubuntu0.4 | [libheif-plugin-jpegenc 1.20.2-1ubuntu0.4](https://patchblox.com/security/data/fix/linux/ubuntu-questing-libheif-plugin-jpegenc-1.20.2-1ubuntu0.4.md) | Jun 24, 2026 |
| Linux | libheif-plugin-jpegenc Ubuntu 26.04.1 LTS (resolute) | 1.21.2-3ubuntu0.1 | [libheif-plugin-jpegenc 1.21.2-3ubuntu0.1](https://patchblox.com/security/data/fix/linux/ubuntu-resolute-libheif-plugin-jpegenc-1.21.2-3ubuntu0.1.md) | Jul 21, 2026 |
| Linux | libheif-plugin-kvazaar Ubuntu 25.10 (questing) | 1.20.2-1ubuntu0.4 | [libheif-plugin-kvazaar 1.20.2-1ubuntu0.4](https://patchblox.com/security/data/fix/linux/ubuntu-questing-libheif-plugin-kvazaar-1.20.2-1ubuntu0.4.md) | Jun 24, 2026 |
| Linux | libheif-plugin-kvazaar Ubuntu 26.04.1 LTS (resolute) | 1.21.2-3ubuntu0.1 | [libheif-plugin-kvazaar 1.21.2-3ubuntu0.1](https://patchblox.com/security/data/fix/linux/ubuntu-resolute-libheif-plugin-kvazaar-1.21.2-3ubuntu0.1.md) | Jul 21, 2026 |
| Linux | libheif-plugin-libde265 Ubuntu 24.04.5 LTS (noble) | 1.17.6-1ubuntu4.4 | [libheif-plugin-libde265 1.17.6-1ubuntu4.4](https://patchblox.com/security/data/fix/linux/ubuntu-noble-libheif-plugin-libde265-1.17.6-1ubuntu4.4.md) | Jun 24, 2026 |
| Linux | libheif-plugin-libde265 Ubuntu 25.10 (questing) | 1.20.2-1ubuntu0.4 | [libheif-plugin-libde265 1.20.2-1ubuntu0.4](https://patchblox.com/security/data/fix/linux/ubuntu-questing-libheif-plugin-libde265-1.20.2-1ubuntu0.4.md) | Jun 24, 2026 |
| Linux | libheif-plugin-libde265 Ubuntu 26.04.1 LTS (resolute) | 1.21.2-3ubuntu0.1 | [libheif-plugin-libde265 1.21.2-3ubuntu0.1](https://patchblox.com/security/data/fix/linux/ubuntu-resolute-libheif-plugin-libde265-1.21.2-3ubuntu0.1.md) | Jul 21, 2026 |
| Linux | libheif-plugin-rav1e Ubuntu 24.04.5 LTS (noble) | 1.17.6-1ubuntu4.4 | [libheif-plugin-rav1e 1.17.6-1ubuntu4.4](https://patchblox.com/security/data/fix/linux/ubuntu-noble-libheif-plugin-rav1e-1.17.6-1ubuntu4.4.md) | Jun 24, 2026 |
| Linux | libheif-plugin-rav1e Ubuntu 25.10 (questing) | 1.20.2-1ubuntu0.4 | [libheif-plugin-rav1e 1.20.2-1ubuntu0.4](https://patchblox.com/security/data/fix/linux/ubuntu-questing-libheif-plugin-rav1e-1.20.2-1ubuntu0.4.md) | Jun 24, 2026 |
| Linux | libheif-plugin-rav1e Ubuntu 26.04.1 LTS (resolute) | 1.21.2-3ubuntu0.1 | [libheif-plugin-rav1e 1.21.2-3ubuntu0.1](https://patchblox.com/security/data/fix/linux/ubuntu-resolute-libheif-plugin-rav1e-1.21.2-3ubuntu0.1.md) | Jul 21, 2026 |
| Linux | libheif-plugin-svtenc Ubuntu 24.04.5 LTS (noble) | 1.17.6-1ubuntu4.4 | [libheif-plugin-svtenc 1.17.6-1ubuntu4.4](https://patchblox.com/security/data/fix/linux/ubuntu-noble-libheif-plugin-svtenc-1.17.6-1ubuntu4.4.md) | Jun 24, 2026 |
| Linux | libheif-plugin-svtenc Ubuntu 25.10 (questing) | 1.20.2-1ubuntu0.4 | [libheif-plugin-svtenc 1.20.2-1ubuntu0.4](https://patchblox.com/security/data/fix/linux/ubuntu-questing-libheif-plugin-svtenc-1.20.2-1ubuntu0.4.md) | Jun 24, 2026 |
| Linux | libheif-plugin-svtenc Ubuntu 26.04.1 LTS (resolute) | 1.21.2-3ubuntu0.1 | [libheif-plugin-svtenc 1.21.2-3ubuntu0.1](https://patchblox.com/security/data/fix/linux/ubuntu-resolute-libheif-plugin-svtenc-1.21.2-3ubuntu0.1.md) | Jul 21, 2026 |
| Linux | libheif-plugin-x265 Ubuntu 24.04.5 LTS (noble) | 1.17.6-1ubuntu4.4 | [libheif-plugin-x265 1.17.6-1ubuntu4.4](https://patchblox.com/security/data/fix/linux/ubuntu-noble-libheif-plugin-x265-1.17.6-1ubuntu4.4.md) | Jun 24, 2026 |
| Linux | libheif-plugin-x265 Ubuntu 25.10 (questing) | 1.20.2-1ubuntu0.4 | [libheif-plugin-x265 1.20.2-1ubuntu0.4](https://patchblox.com/security/data/fix/linux/ubuntu-questing-libheif-plugin-x265-1.20.2-1ubuntu0.4.md) | Jun 24, 2026 |
| Linux | libheif-plugin-x265 Ubuntu 26.04.1 LTS (resolute) | 1.21.2-3ubuntu0.1 | [libheif-plugin-x265 1.21.2-3ubuntu0.1](https://patchblox.com/security/data/fix/linux/ubuntu-resolute-libheif-plugin-x265-1.21.2-3ubuntu0.1.md) | Jul 21, 2026 |
| Linux | libheif-plugins-all Ubuntu 25.10 (questing) | 1.20.2-1ubuntu0.4 | [libheif-plugins-all 1.20.2-1ubuntu0.4](https://patchblox.com/security/data/fix/linux/ubuntu-questing-libheif-plugins-all-1.20.2-1ubuntu0.4.md) | Jun 24, 2026 |
| Linux | libheif-plugins-all Ubuntu 26.04.1 LTS (resolute) | 1.21.2-3ubuntu0.1 | [libheif-plugins-all 1.21.2-3ubuntu0.1](https://patchblox.com/security/data/fix/linux/ubuntu-resolute-libheif-plugins-all-1.21.2-3ubuntu0.1.md) | Jul 21, 2026 |
| Linux | libheif-tools amzn 2023 | 1.19.8-1.amzn2023.0.5 | [ALAS2023-2026-1814](https://patchblox.com/security/data/fix/linux/alas2023-2026-1814.md) | Jun 8, 2026 |
| Linux | libheif-tools-debuginfo amzn 2023 | 1.19.8-1.amzn2023.0.5 | [ALAS2023-2026-1814](https://patchblox.com/security/data/fix/linux/alas2023-2026-1814.md) | Jun 8, 2026 |
| Linux | libheif1 Ubuntu 24.04.5 LTS (noble) | 1.17.6-1ubuntu4.4 | [libheif1 1.17.6-1ubuntu4.4](https://patchblox.com/security/data/fix/linux/ubuntu-noble-libheif1-1.17.6-1ubuntu4.4.md) | Jun 24, 2026 |
| Linux | libheif1 Ubuntu 25.10 (questing) | 1.20.2-1ubuntu0.4 | [libheif1 1.20.2-1ubuntu0.4](https://patchblox.com/security/data/fix/linux/ubuntu-questing-libheif1-1.20.2-1ubuntu0.4.md) | Jun 24, 2026 |
| Linux | libheif1 Ubuntu 26.04.1 LTS (resolute) | 1.21.2-3ubuntu0.1 | [libheif1 1.21.2-3ubuntu0.1](https://patchblox.com/security/data/fix/linux/ubuntu-resolute-libheif1-1.21.2-3ubuntu0.1.md) | Jul 21, 2026 |

---

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