# CVE-2023-22484: cmark-gfm: cmark-gfm is GitHub's fork of cmark, a CommonMark parsing and renderinglibrary and program in C

CVE-2023-22484 is fixed in 6 products on 1 platform, first by DEBIAN-CVE-2023-22484, released January 23, 2023. It is not reported as exploited. Patch Radar priority: High.

- Web page: https://patchblox.com/security/cve/CVE-2023-22484
- Priority: High
- CVSS: 7.5 (Medium)
- EPSS: 0.0097
- CISA KEV: not listed
- Exploited (vendor report): no
- Publicly disclosed: no
- Published: Jan 23, 2023

## Description

cmark-gfm is GitHub's fork of cmark, a CommonMark parsing and renderinglibrary and program in C. Versions prior to 0.29.0.gfm.7 are subject to apolynomial time complexity issue in cmark-gfm that may lead to unboundedresource exhaustion and subsequent denial of service. This vulnerabilityhas been patched in 0.29.0.gfm.7.

## Where it's fixed

| Platform | Product | Fixed in | Fix | Released |
|---|---|---|---|---|
| Linux | cmark-gfm Debian 13.5 (trixie) | 0.29.0.gfm.13-1 | [DEBIAN-CVE-2023-22484](https://patchblox.com/security/data/fix/linux/debian-cve-2023-22484.md) | Jan 23, 2023 |
| Linux | cmark-gfm Debian 14 | 0.29.0.gfm.13-1 | [DEBIAN-CVE-2023-22484](https://patchblox.com/security/data/fix/linux/debian-cve-2023-22484.md) | Jan 23, 2023 |
| Linux | cmark-gfm Ubuntu 24.04.5 LTS (noble) | 0.29.0.gfm.6-6ubuntu0.24.04.1~esm1 | [cmark-gfm 0.29.0.gfm.6-6ubuntu0.24.04.1~esm1](https://patchblox.com/security/data/fix/linux/ubuntu-noble-cmark-gfm-0.29.0.gfm.6-6ubuntu0.24.04.1-esm1.md) | Mar 31, 2023 |
| Linux | cmark-gfm Ubuntu 24.10 (oracular) | 0.29.0.gfm.6-6ubuntu0.24.10.1 | [cmark-gfm 0.29.0.gfm.6-6ubuntu0.24.10.1](https://patchblox.com/security/data/fix/linux/ubuntu-oracular-cmark-gfm-0.29.0.gfm.6-6ubuntu0.24.10.1.md) | Jan 16, 2026 |
| Linux | libcmark-gfm-extensions0.29.0.gfm.6 Ubuntu 24.04.5 LTS (noble) | 0.29.0.gfm.6-6ubuntu0.24.04.1~esm1 | [libcmark-gfm-extensions0.29.0.gfm.6 0.29.0.gfm.6-6ubuntu0.24.04.1~esm1](https://patchblox.com/security/data/fix/linux/ubuntu-noble-libcmark-gfm-extensions0.29.0.gfm.6-0.29.0.gfm.6-6ubuntu0.24.04.1-esm1.md) | Mar 31, 2023 |
| Linux | libcmark-gfm-extensions0.29.0.gfm.6 Ubuntu 24.10 (oracular) | 0.29.0.gfm.6-6ubuntu0.24.10.1 | [libcmark-gfm-extensions0.29.0.gfm.6 0.29.0.gfm.6-6ubuntu0.24.10.1](https://patchblox.com/security/data/fix/linux/ubuntu-oracular-libcmark-gfm-extensions0.29.0.gfm.6-0.29.0.gfm.6-6ubuntu0.24.10.1.md) | Jan 16, 2026 |
| Linux | libcmark-gfm0.29.0.gfm.6 Ubuntu 24.04.5 LTS (noble) | 0.29.0.gfm.6-6ubuntu0.24.04.1~esm1 | [libcmark-gfm0.29.0.gfm.6 0.29.0.gfm.6-6ubuntu0.24.04.1~esm1](https://patchblox.com/security/data/fix/linux/ubuntu-noble-libcmark-gfm0.29.0.gfm.6-0.29.0.gfm.6-6ubuntu0.24.04.1-esm1.md) | Mar 31, 2023 |
| Linux | libcmark-gfm0.29.0.gfm.6 Ubuntu 24.10 (oracular) | 0.29.0.gfm.6-6ubuntu0.24.10.1 | [libcmark-gfm0.29.0.gfm.6 0.29.0.gfm.6-6ubuntu0.24.10.1](https://patchblox.com/security/data/fix/linux/ubuntu-oracular-libcmark-gfm0.29.0.gfm.6-0.29.0.gfm.6-6ubuntu0.24.10.1.md) | Jan 16, 2026 |
| Linux | python-cmarkgfm Debian 13.5 (trixie) | 2024.11.20-1 | [DEBIAN-CVE-2023-22484](https://patchblox.com/security/data/fix/linux/debian-cve-2023-22484.md) | Jan 23, 2023 |
| Linux | python-cmarkgfm Debian 14 | 2024.11.20-1 | [DEBIAN-CVE-2023-22484](https://patchblox.com/security/data/fix/linux/debian-cve-2023-22484.md) | Jan 23, 2023 |
| Linux | r-cran-commonmark Debian 13.5 (trixie) | 1.9.0-1 | [DEBIAN-CVE-2023-22484](https://patchblox.com/security/data/fix/linux/debian-cve-2023-22484.md) | Jan 23, 2023 |
| Linux | r-cran-commonmark Debian 14 | 1.9.0-1 | [DEBIAN-CVE-2023-22484](https://patchblox.com/security/data/fix/linux/debian-cve-2023-22484.md) | Jan 23, 2023 |
| Linux | ruby-commonmarker Debian 13.5 (trixie) | 0.23.10-1 | [DEBIAN-CVE-2023-22484](https://patchblox.com/security/data/fix/linux/debian-cve-2023-22484.md) | Jan 23, 2023 |
| Linux | ruby-commonmarker Debian 14 | 0.23.10-1 | [DEBIAN-CVE-2023-22484](https://patchblox.com/security/data/fix/linux/debian-cve-2023-22484.md) | Jan 23, 2023 |

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