# CVE-2022-30975: libmujs1: In Artifex MuJS through 1.2.0, jsP_dumpsyntax in jsdump.c has a NULL pointer dereference, as demonstrated by mujs-pp.

CVE-2022-30975 is fixed in 2 products on 1 platform, first by libmujs1 1.1.3-3ubuntu0.1~esm1, released May 18, 2022. It is not reported as exploited. Patch Radar priority: Routine.

- Web page: https://patchblox.com/security/cve/CVE-2022-30975
- Priority: Routine
- CVSS: 5.5 (Low)
- EPSS: 0.0115
- CISA KEV: not listed
- Exploited (vendor report): no
- Publicly disclosed: no
- Published: May 18, 2022

## Description

In Artifex MuJS through 1.2.0, jsP_dumpsyntax in jsdump.c has a NULL pointer dereference, as demonstrated by mujs-pp.

## Where it's fixed

| Platform | Product | Fixed in | Fix | Released |
|---|---|---|---|---|
| Linux | libmujs1 Ubuntu 22.04.1 LTS (jammy) | 1.1.3-3ubuntu0.1~esm1 | [libmujs1 1.1.3-3ubuntu0.1~esm1](https://patchblox.com/security/data/fix/linux/ubuntu-jammy-libmujs1-1.1.3-3ubuntu0.1-esm1.md) | May 18, 2022 |
| Linux | mujs Debian 12.15 (bookworm) | 1.2.0-3 | [DEBIAN-CVE-2022-30975](https://patchblox.com/security/data/fix/linux/debian-cve-2022-30975.md) | May 18, 2022 |
| Linux | mujs Debian 13.5 (trixie) | 1.2.0-3 | [DEBIAN-CVE-2022-30975](https://patchblox.com/security/data/fix/linux/debian-cve-2022-30975.md) | May 18, 2022 |
| Linux | mujs Debian 14 | 1.2.0-3 | [DEBIAN-CVE-2022-30975](https://patchblox.com/security/data/fix/linux/debian-cve-2022-30975.md) | May 18, 2022 |
| Linux | mujs Ubuntu 22.04.1 LTS (jammy) | 1.1.3-3ubuntu0.1~esm1 | [mujs 1.1.3-3ubuntu0.1~esm1](https://patchblox.com/security/data/fix/linux/ubuntu-jammy-mujs-1.1.3-3ubuntu0.1-esm1.md) | May 18, 2022 |

---

Data as of 2026-11-08T13:06:02Z 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 Patchblox finds out-of-date software on Windows, macOS and Linux and updates it through release rings: https://patchblox.com/demo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.
