# CVE-2021-20224: imagemagick: An integer overflow issue was discovered in ImageMagick's ExportIndexQuantum() function in MagickCore/quantum-export.c

CVE-2021-20224 is fixed in 29 products on 1 platform, first by imagemagick 8:6.9.10.23+dfsg-2.1ubuntu11.4+esm1, released August 25, 2022. It is not reported as exploited. Patch Radar priority: Routine.

- Web page: https://patchblox.com/security/cve/CVE-2021-20224
- Priority: Routine
- CVSS: 5.5 (medium)
- EPSS: 0.0039
- CISA KEV: not listed
- Exploited (vendor report): no
- Publicly disclosed: no
- Published: Aug 25, 2022

## Description

An integer overflow issue was discovered in ImageMagick's ExportIndexQuantum() function in MagickCore/quantum-export.c. Function calls to GetPixelIndex() could result in values outside the range of representable for the 'unsigned char'. When ImageMagick processes a crafted pdf file, this could lead to an undefined behaviour or a crash.

## Where it's fixed

| Platform | Product | Fixed in | Fix | Released |
|---|---|---|---|---|
| Linux | imagemagick Debian 12.15 (bookworm) | 8:6.9.11.57+dfsg-1 | [DEBIAN-CVE-2021-20224](https://patchblox.com/security/data/fix/linux/debian-cve-2021-20224.md) | Aug 25, 2022 |
| Linux | imagemagick Debian 13.5 (trixie) | 8:6.9.11.57+dfsg-1 | [DEBIAN-CVE-2021-20224](https://patchblox.com/security/data/fix/linux/debian-cve-2021-20224.md) | Aug 25, 2022 |
| Linux | imagemagick Debian 14 | 8:6.9.11.57+dfsg-1 | [DEBIAN-CVE-2021-20224](https://patchblox.com/security/data/fix/linux/debian-cve-2021-20224.md) | Aug 25, 2022 |
| Linux | imagemagick Ubuntu 18.04.6 LTS (bionic) | 8:6.9.7.4+dfsg-16ubuntu6.14 | [imagemagick 8:6.9.7.4+dfsg-16ubuntu6.14](https://patchblox.com/security/data/fix/linux/ubuntu-bionic-imagemagick-8-6.9.7.4-dfsg-16ubuntu6.14.md) | Aug 22, 2023 |
| Linux | imagemagick Ubuntu 20.04 LTS (focal) | 8:6.9.10.23+dfsg-2.1ubuntu11.4+esm1 | [imagemagick 8:6.9.10.23+dfsg-2.1ubuntu11.4+esm1](https://patchblox.com/security/data/fix/linux/ubuntu-focal-imagemagick-8-6.9.10.23-dfsg-2.1ubuntu11.4-esm1.md) | Aug 25, 2022 |
| Linux | imagemagick-6-common Ubuntu 18.04.6 LTS (bionic) | 8:6.9.7.4+dfsg-16ubuntu6.14 | [imagemagick-6-common 8:6.9.7.4+dfsg-16ubuntu6.14](https://patchblox.com/security/data/fix/linux/ubuntu-bionic-imagemagick-6-common-8-6.9.7.4-dfsg-16ubuntu6.14.md) | Aug 22, 2023 |
| Linux | imagemagick-6-common Ubuntu 20.04 LTS (focal) | 8:6.9.10.23+dfsg-2.1ubuntu11.4+esm1 | [imagemagick-6-common 8:6.9.10.23+dfsg-2.1ubuntu11.4+esm1](https://patchblox.com/security/data/fix/linux/ubuntu-focal-imagemagick-6-common-8-6.9.10.23-dfsg-2.1ubuntu11.4-esm1.md) | Aug 25, 2022 |
| Linux | imagemagick-6.q16 Ubuntu 18.04.6 LTS (bionic) | 8:6.9.7.4+dfsg-16ubuntu6.14 | [imagemagick-6.q16 8:6.9.7.4+dfsg-16ubuntu6.14](https://patchblox.com/security/data/fix/linux/ubuntu-bionic-imagemagick-6.q16-8-6.9.7.4-dfsg-16ubuntu6.14.md) | Aug 22, 2023 |
| Linux | imagemagick-6.q16 Ubuntu 20.04 LTS (focal) | 8:6.9.10.23+dfsg-2.1ubuntu11.4+esm1 | [imagemagick-6.q16 8:6.9.10.23+dfsg-2.1ubuntu11.4+esm1](https://patchblox.com/security/data/fix/linux/ubuntu-focal-imagemagick-6.q16-8-6.9.10.23-dfsg-2.1ubuntu11.4-esm1.md) | Aug 25, 2022 |
| Linux | imagemagick-6.q16hdri Ubuntu 18.04.6 LTS (bionic) | 8:6.9.7.4+dfsg-16ubuntu6.14 | [imagemagick-6.q16hdri 8:6.9.7.4+dfsg-16ubuntu6.14](https://patchblox.com/security/data/fix/linux/ubuntu-bionic-imagemagick-6.q16hdri-8-6.9.7.4-dfsg-16ubuntu6.14.md) | Aug 22, 2023 |
| Linux | imagemagick-6.q16hdri Ubuntu 20.04 LTS (focal) | 8:6.9.10.23+dfsg-2.1ubuntu11.4+esm1 | [imagemagick-6.q16hdri 8:6.9.10.23+dfsg-2.1ubuntu11.4+esm1](https://patchblox.com/security/data/fix/linux/ubuntu-focal-imagemagick-6.q16hdri-8-6.9.10.23-dfsg-2.1ubuntu11.4-esm1.md) | Aug 25, 2022 |
| Linux | imagemagick-common Ubuntu 18.04.6 LTS (bionic) | 8:6.9.7.4+dfsg-16ubuntu6.14 | [imagemagick-common 8:6.9.7.4+dfsg-16ubuntu6.14](https://patchblox.com/security/data/fix/linux/ubuntu-bionic-imagemagick-common-8-6.9.7.4-dfsg-16ubuntu6.14.md) | Aug 22, 2023 |
| Linux | imagemagick-common Ubuntu 20.04 LTS (focal) | 8:6.9.10.23+dfsg-2.1ubuntu11.4+esm1 | [imagemagick-common 8:6.9.10.23+dfsg-2.1ubuntu11.4+esm1](https://patchblox.com/security/data/fix/linux/ubuntu-focal-imagemagick-common-8-6.9.10.23-dfsg-2.1ubuntu11.4-esm1.md) | Aug 25, 2022 |
| Linux | libimage-magick-perl Ubuntu 18.04.6 LTS (bionic) | 8:6.9.7.4+dfsg-16ubuntu6.14 | [libimage-magick-perl 8:6.9.7.4+dfsg-16ubuntu6.14](https://patchblox.com/security/data/fix/linux/ubuntu-bionic-libimage-magick-perl-8-6.9.7.4-dfsg-16ubuntu6.14.md) | Aug 22, 2023 |
| Linux | libimage-magick-perl Ubuntu 20.04 LTS (focal) | 8:6.9.10.23+dfsg-2.1ubuntu11.4+esm1 | [libimage-magick-perl 8:6.9.10.23+dfsg-2.1ubuntu11.4+esm1](https://patchblox.com/security/data/fix/linux/ubuntu-focal-libimage-magick-perl-8-6.9.10.23-dfsg-2.1ubuntu11.4-esm1.md) | Aug 25, 2022 |
| Linux | libimage-magick-q16-perl Ubuntu 18.04.6 LTS (bionic) | 8:6.9.7.4+dfsg-16ubuntu6.14 | [libimage-magick-q16-perl 8:6.9.7.4+dfsg-16ubuntu6.14](https://patchblox.com/security/data/fix/linux/ubuntu-bionic-libimage-magick-q16-perl-8-6.9.7.4-dfsg-16ubuntu6.14.md) | Aug 22, 2023 |
| Linux | libimage-magick-q16-perl Ubuntu 20.04 LTS (focal) | 8:6.9.10.23+dfsg-2.1ubuntu11.4+esm1 | [libimage-magick-q16-perl 8:6.9.10.23+dfsg-2.1ubuntu11.4+esm1](https://patchblox.com/security/data/fix/linux/ubuntu-focal-libimage-magick-q16-perl-8-6.9.10.23-dfsg-2.1ubuntu11.4-esm1.md) | Aug 25, 2022 |
| Linux | libimage-magick-q16hdri-perl Ubuntu 18.04.6 LTS (bionic) | 8:6.9.7.4+dfsg-16ubuntu6.14 | [libimage-magick-q16hdri-perl 8:6.9.7.4+dfsg-16ubuntu6.14](https://patchblox.com/security/data/fix/linux/ubuntu-bionic-libimage-magick-q16hdri-perl-8-6.9.7.4-dfsg-16ubuntu6.14.md) | Aug 22, 2023 |
| Linux | libimage-magick-q16hdri-perl Ubuntu 20.04 LTS (focal) | 8:6.9.10.23+dfsg-2.1ubuntu11.4+esm1 | [libimage-magick-q16hdri-perl 8:6.9.10.23+dfsg-2.1ubuntu11.4+esm1](https://patchblox.com/security/data/fix/linux/ubuntu-focal-libimage-magick-q16hdri-perl-8-6.9.10.23-dfsg-2.1ubuntu11.4-esm1.md) | Aug 25, 2022 |
| Linux | libmagick++-6-headers Ubuntu 18.04.6 LTS (bionic) | 8:6.9.7.4+dfsg-16ubuntu6.14 | [libmagick++-6-headers 8:6.9.7.4+dfsg-16ubuntu6.14](https://patchblox.com/security/data/fix/linux/ubuntu-bionic-libmagick-6-headers-8-6.9.7.4-dfsg-16ubuntu6.14.md) | Aug 22, 2023 |
| Linux | libmagick++-6-headers Ubuntu 20.04 LTS (focal) | 8:6.9.10.23+dfsg-2.1ubuntu11.4+esm1 | [libmagick++-6-headers 8:6.9.10.23+dfsg-2.1ubuntu11.4+esm1](https://patchblox.com/security/data/fix/linux/ubuntu-focal-libmagick-6-headers-8-6.9.10.23-dfsg-2.1ubuntu11.4-esm1.md) | Aug 25, 2022 |
| Linux | libmagick++-6.q16-7 Ubuntu 18.04.6 LTS (bionic) | 8:6.9.7.4+dfsg-16ubuntu6.14 | [libmagick++-6.q16-7 8:6.9.7.4+dfsg-16ubuntu6.14](https://patchblox.com/security/data/fix/linux/ubuntu-bionic-libmagick-6.q16-7-8-6.9.7.4-dfsg-16ubuntu6.14.md) | Aug 22, 2023 |
| Linux | libmagick++-6.q16-8 Ubuntu 20.04 LTS (focal) | 8:6.9.10.23+dfsg-2.1ubuntu11.4+esm1 | [libmagick++-6.q16-8 8:6.9.10.23+dfsg-2.1ubuntu11.4+esm1](https://patchblox.com/security/data/fix/linux/ubuntu-focal-libmagick-6.q16-8-8-6.9.10.23-dfsg-2.1ubuntu11.4-esm1.md) | Aug 25, 2022 |
| Linux | libmagick++-6.q16hdri-7 Ubuntu 18.04.6 LTS (bionic) | 8:6.9.7.4+dfsg-16ubuntu6.14 | [libmagick++-6.q16hdri-7 8:6.9.7.4+dfsg-16ubuntu6.14](https://patchblox.com/security/data/fix/linux/ubuntu-bionic-libmagick-6.q16hdri-7-8-6.9.7.4-dfsg-16ubuntu6.14.md) | Aug 22, 2023 |
| Linux | libmagick++-6.q16hdri-8 Ubuntu 20.04 LTS (focal) | 8:6.9.10.23+dfsg-2.1ubuntu11.4+esm1 | [libmagick++-6.q16hdri-8 8:6.9.10.23+dfsg-2.1ubuntu11.4+esm1](https://patchblox.com/security/data/fix/linux/ubuntu-focal-libmagick-6.q16hdri-8-8-6.9.10.23-dfsg-2.1ubuntu11.4-esm1.md) | Aug 25, 2022 |
| Linux | libmagickcore-6-arch-config Ubuntu 18.04.6 LTS (bionic) | 8:6.9.7.4+dfsg-16ubuntu6.14 | [libmagickcore-6-arch-config 8:6.9.7.4+dfsg-16ubuntu6.14](https://patchblox.com/security/data/fix/linux/ubuntu-bionic-libmagickcore-6-arch-config-8-6.9.7.4-dfsg-16ubuntu6.14.md) | Aug 22, 2023 |
| Linux | libmagickcore-6-arch-config Ubuntu 20.04 LTS (focal) | 8:6.9.10.23+dfsg-2.1ubuntu11.4+esm1 | [libmagickcore-6-arch-config 8:6.9.10.23+dfsg-2.1ubuntu11.4+esm1](https://patchblox.com/security/data/fix/linux/ubuntu-focal-libmagickcore-6-arch-config-8-6.9.10.23-dfsg-2.1ubuntu11.4-esm1.md) | Aug 25, 2022 |
| Linux | libmagickcore-6-headers Ubuntu 18.04.6 LTS (bionic) | 8:6.9.7.4+dfsg-16ubuntu6.14 | [libmagickcore-6-headers 8:6.9.7.4+dfsg-16ubuntu6.14](https://patchblox.com/security/data/fix/linux/ubuntu-bionic-libmagickcore-6-headers-8-6.9.7.4-dfsg-16ubuntu6.14.md) | Aug 22, 2023 |
| Linux | libmagickcore-6-headers Ubuntu 20.04 LTS (focal) | 8:6.9.10.23+dfsg-2.1ubuntu11.4+esm1 | [libmagickcore-6-headers 8:6.9.10.23+dfsg-2.1ubuntu11.4+esm1](https://patchblox.com/security/data/fix/linux/ubuntu-focal-libmagickcore-6-headers-8-6.9.10.23-dfsg-2.1ubuntu11.4-esm1.md) | Aug 25, 2022 |
| Linux | libmagickcore-6.q16-3 Ubuntu 18.04.6 LTS (bionic) | 8:6.9.7.4+dfsg-16ubuntu6.14 | [libmagickcore-6.q16-3 8:6.9.7.4+dfsg-16ubuntu6.14](https://patchblox.com/security/data/fix/linux/ubuntu-bionic-libmagickcore-6.q16-3-8-6.9.7.4-dfsg-16ubuntu6.14.md) | Aug 22, 2023 |
| Linux | libmagickcore-6.q16-3-extra Ubuntu 18.04.6 LTS (bionic) | 8:6.9.7.4+dfsg-16ubuntu6.14 | [libmagickcore-6.q16-3-extra 8:6.9.7.4+dfsg-16ubuntu6.14](https://patchblox.com/security/data/fix/linux/ubuntu-bionic-libmagickcore-6.q16-3-extra-8-6.9.7.4-dfsg-16ubuntu6.14.md) | Aug 22, 2023 |
| Linux | libmagickcore-6.q16-6 Ubuntu 20.04 LTS (focal) | 8:6.9.10.23+dfsg-2.1ubuntu11.4+esm1 | [libmagickcore-6.q16-6 8:6.9.10.23+dfsg-2.1ubuntu11.4+esm1](https://patchblox.com/security/data/fix/linux/ubuntu-focal-libmagickcore-6.q16-6-8-6.9.10.23-dfsg-2.1ubuntu11.4-esm1.md) | Aug 25, 2022 |
| Linux | libmagickcore-6.q16-6-extra Ubuntu 20.04 LTS (focal) | 8:6.9.10.23+dfsg-2.1ubuntu11.4+esm1 | [libmagickcore-6.q16-6-extra 8:6.9.10.23+dfsg-2.1ubuntu11.4+esm1](https://patchblox.com/security/data/fix/linux/ubuntu-focal-libmagickcore-6.q16-6-extra-8-6.9.10.23-dfsg-2.1ubuntu11.4-esm1.md) | Aug 25, 2022 |
| Linux | libmagickcore-6.q16hdri-3 Ubuntu 18.04.6 LTS (bionic) | 8:6.9.7.4+dfsg-16ubuntu6.14 | [libmagickcore-6.q16hdri-3 8:6.9.7.4+dfsg-16ubuntu6.14](https://patchblox.com/security/data/fix/linux/ubuntu-bionic-libmagickcore-6.q16hdri-3-8-6.9.7.4-dfsg-16ubuntu6.14.md) | Aug 22, 2023 |
| Linux | libmagickcore-6.q16hdri-3-extra Ubuntu 18.04.6 LTS (bionic) | 8:6.9.7.4+dfsg-16ubuntu6.14 | [libmagickcore-6.q16hdri-3-extra 8:6.9.7.4+dfsg-16ubuntu6.14](https://patchblox.com/security/data/fix/linux/ubuntu-bionic-libmagickcore-6.q16hdri-3-extra-8-6.9.7.4-dfsg-16ubuntu6.14.md) | Aug 22, 2023 |
| Linux | libmagickcore-6.q16hdri-6 Ubuntu 20.04 LTS (focal) | 8:6.9.10.23+dfsg-2.1ubuntu11.4+esm1 | [libmagickcore-6.q16hdri-6 8:6.9.10.23+dfsg-2.1ubuntu11.4+esm1](https://patchblox.com/security/data/fix/linux/ubuntu-focal-libmagickcore-6.q16hdri-6-8-6.9.10.23-dfsg-2.1ubuntu11.4-esm1.md) | Aug 25, 2022 |
| Linux | libmagickcore-6.q16hdri-6-extra Ubuntu 20.04 LTS (focal) | 8:6.9.10.23+dfsg-2.1ubuntu11.4+esm1 | [libmagickcore-6.q16hdri-6-extra 8:6.9.10.23+dfsg-2.1ubuntu11.4+esm1](https://patchblox.com/security/data/fix/linux/ubuntu-focal-libmagickcore-6.q16hdri-6-extra-8-6.9.10.23-dfsg-2.1ubuntu11.4-esm1.md) | Aug 25, 2022 |
| Linux | libmagickwand-6-headers Ubuntu 18.04.6 LTS (bionic) | 8:6.9.7.4+dfsg-16ubuntu6.14 | [libmagickwand-6-headers 8:6.9.7.4+dfsg-16ubuntu6.14](https://patchblox.com/security/data/fix/linux/ubuntu-bionic-libmagickwand-6-headers-8-6.9.7.4-dfsg-16ubuntu6.14.md) | Aug 22, 2023 |
| Linux | libmagickwand-6-headers Ubuntu 20.04 LTS (focal) | 8:6.9.10.23+dfsg-2.1ubuntu11.4+esm1 | [libmagickwand-6-headers 8:6.9.10.23+dfsg-2.1ubuntu11.4+esm1](https://patchblox.com/security/data/fix/linux/ubuntu-focal-libmagickwand-6-headers-8-6.9.10.23-dfsg-2.1ubuntu11.4-esm1.md) | Aug 25, 2022 |
| Linux | libmagickwand-6.q16-3 Ubuntu 18.04.6 LTS (bionic) | 8:6.9.7.4+dfsg-16ubuntu6.14 | [libmagickwand-6.q16-3 8:6.9.7.4+dfsg-16ubuntu6.14](https://patchblox.com/security/data/fix/linux/ubuntu-bionic-libmagickwand-6.q16-3-8-6.9.7.4-dfsg-16ubuntu6.14.md) | Aug 22, 2023 |
| Linux | libmagickwand-6.q16-6 Ubuntu 20.04 LTS (focal) | 8:6.9.10.23+dfsg-2.1ubuntu11.4+esm1 | [libmagickwand-6.q16-6 8:6.9.10.23+dfsg-2.1ubuntu11.4+esm1](https://patchblox.com/security/data/fix/linux/ubuntu-focal-libmagickwand-6.q16-6-8-6.9.10.23-dfsg-2.1ubuntu11.4-esm1.md) | Aug 25, 2022 |
| Linux | libmagickwand-6.q16hdri-3 Ubuntu 18.04.6 LTS (bionic) | 8:6.9.7.4+dfsg-16ubuntu6.14 | [libmagickwand-6.q16hdri-3 8:6.9.7.4+dfsg-16ubuntu6.14](https://patchblox.com/security/data/fix/linux/ubuntu-bionic-libmagickwand-6.q16hdri-3-8-6.9.7.4-dfsg-16ubuntu6.14.md) | Aug 22, 2023 |
| Linux | libmagickwand-6.q16hdri-6 Ubuntu 20.04 LTS (focal) | 8:6.9.10.23+dfsg-2.1ubuntu11.4+esm1 | [libmagickwand-6.q16hdri-6 8:6.9.10.23+dfsg-2.1ubuntu11.4+esm1](https://patchblox.com/security/data/fix/linux/ubuntu-focal-libmagickwand-6.q16hdri-6-8-6.9.10.23-dfsg-2.1ubuntu11.4-esm1.md) | Aug 25, 2022 |
| Linux | perlmagick Ubuntu 18.04.6 LTS (bionic) | 8:6.9.7.4+dfsg-16ubuntu6.14 | [perlmagick 8:6.9.7.4+dfsg-16ubuntu6.14](https://patchblox.com/security/data/fix/linux/ubuntu-bionic-perlmagick-8-6.9.7.4-dfsg-16ubuntu6.14.md) | Aug 22, 2023 |
| Linux | perlmagick Ubuntu 20.04 LTS (focal) | 8:6.9.10.23+dfsg-2.1ubuntu11.4+esm1 | [perlmagick 8:6.9.10.23+dfsg-2.1ubuntu11.4+esm1](https://patchblox.com/security/data/fix/linux/ubuntu-focal-perlmagick-8-6.9.10.23-dfsg-2.1ubuntu11.4-esm1.md) | Aug 25, 2022 |

---

Data as of 2026-11-09T01:18:40Z UTC. Source: Patchblox Patch Radar (https://patchblox.com/security/patch-radar). Patchblox finds out-of-date software on Windows, macOS and Linux and updates it through release rings: https://patchblox.com/demo

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