# CVE-2021-23158: htmldoc: A flaw was found in htmldoc in v1.9.12

CVE-2021-23158 is fixed in 2 products on 1 platform, first by DEBIAN-CVE-2021-23158, released March 16, 2022. It is not reported as exploited. Patch Radar priority: Urgent.

- Web page: https://patchblox.com/security/cve/CVE-2021-23158
- Priority: Urgent
- CVSS: 9.8 (critical)
- EPSS: 0.0244
- CISA KEV: not listed
- Exploited (vendor report): no
- Publicly disclosed: no
- Published: Mar 16, 2022

## Description

A flaw was found in htmldoc in v1.9.12. Double-free in function pspdf_export(),in ps-pdf.cxx may result in a write-what-where condition, allowing an attacker to execute arbitrary code and denial of service.

## Where it's fixed

| Platform | Product | Fixed in | Fix | Released |
|---|---|---|---|---|
| Linux | htmldoc Debian 12.15 (bookworm) | 1.9.11-4 | [DEBIAN-CVE-2021-23158](https://patchblox.com/security/data/fix/linux/debian-cve-2021-23158.md) | Mar 16, 2022 |
| Linux | htmldoc Debian 13.5 (trixie) | 1.9.11-4 | [DEBIAN-CVE-2021-23158](https://patchblox.com/security/data/fix/linux/debian-cve-2021-23158.md) | Mar 16, 2022 |
| Linux | htmldoc Debian 14 | 1.9.11-4 | [DEBIAN-CVE-2021-23158](https://patchblox.com/security/data/fix/linux/debian-cve-2021-23158.md) | Mar 16, 2022 |
| Linux | htmldoc Ubuntu 18.04.6 LTS (bionic) | 1.9.2-1ubuntu0.2+esm1 | [htmldoc 1.9.2-1ubuntu0.2+esm1](https://patchblox.com/security/data/fix/linux/ubuntu-bionic-htmldoc-1.9.2-1ubuntu0.2-esm1.md) | Jul 18, 2023 |
| Linux | htmldoc Ubuntu 20.04 LTS (focal) | 1.9.7-1ubuntu0.3+esm1 | [htmldoc 1.9.7-1ubuntu0.3+esm1](https://patchblox.com/security/data/fix/linux/ubuntu-focal-htmldoc-1.9.7-1ubuntu0.3-esm1.md) | Jul 18, 2023 |
| Linux | htmldoc-common Ubuntu 18.04.6 LTS (bionic) | 1.9.2-1ubuntu0.2+esm1 | [htmldoc-common 1.9.2-1ubuntu0.2+esm1](https://patchblox.com/security/data/fix/linux/ubuntu-bionic-htmldoc-common-1.9.2-1ubuntu0.2-esm1.md) | Jul 18, 2023 |
| Linux | htmldoc-common Ubuntu 20.04 LTS (focal) | 1.9.7-1ubuntu0.3+esm1 | [htmldoc-common 1.9.7-1ubuntu0.3+esm1](https://patchblox.com/security/data/fix/linux/ubuntu-focal-htmldoc-common-1.9.7-1ubuntu0.3-esm1.md) | Jul 18, 2023 |

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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 Patchblox finds out-of-date software on Windows, macOS and Linux and updates it through release rings: https://patchblox.com/demo

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