# CVE-2023-31794: mupdf: MuPDF v1.21.1 was discovered to contain an infinite recursion in the component pdf_mark_list_push

CVE-2023-31794 is fixed in mupdf on 1 platform, first by DEBIAN-CVE-2023-31794, released October 31, 2023. It is not reported as exploited. Patch Radar priority: Routine.

- Web page: https://patchblox.com/security/cve/CVE-2023-31794
- Priority: Routine
- CVSS: 5.5 (medium)
- EPSS: 0.0025
- CISA KEV: not listed
- Exploited (vendor report): no
- Publicly disclosed: no
- Published: Oct 31, 2023

## Description

MuPDF v1.21.1 was discovered to contain an infinite recursion in the component pdf_mark_list_push. This vulnerability allows attackers to cause a Denial of Service (DoS) via a crafted PDF file.

## Where it's fixed

| Platform | Product | Fixed in | Fix | Released |
|---|---|---|---|---|
| Linux | mupdf Debian 13.5 (trixie) | 1.22.1+ds1-1 | [DEBIAN-CVE-2023-31794](https://patchblox.com/security/data/fix/linux/debian-cve-2023-31794.md) | Oct 31, 2023 |
| Linux | mupdf Debian 14 | 1.22.1+ds1-1 | [DEBIAN-CVE-2023-31794](https://patchblox.com/security/data/fix/linux/debian-cve-2023-31794.md) | Oct 31, 2023 |

---

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 Patchblox finds out-of-date software on Windows, macOS and Linux and updates it through release rings: https://patchblox.com/demo

Free to use with attribution: show "Data: Patchblox Patch Radar" with a link to https://patchblox.com/security/patch-radar. Terms, including what needs a written agreement: https://patchblox.com/security/patch-radar/use-the-data

Product names, logos and trademarks shown on Patch Radar belong to their respective owners. They are used only to identify the software each security fix applies to and to help readers find their platform. Their use does not imply any affiliation with, or endorsement by, those owners, and Patchblox is not affiliated with any of them.