# CVE-2018-15909: ghostscript: In Artifex Ghostscript 9.23 before 2018-08-24, a type confusion using the .shfill operator could be used by attackers...

CVE-2018-15909 is fixed in 4 products on 1 platform, first by ghostscript 9.22~dfsg+1-0ubuntu1.2, released September 9, 2018. It is not reported as exploited. Patch Radar priority: Routine.

- Web page: https://patchblox.com/security/cve/CVE-2018-15909
- Priority: Routine
- CVSS: n/a (Medium)
- EPSS: 0.0298
- CISA KEV: not listed
- Exploited (vendor report): no
- Publicly disclosed: no
- Published: Aug 26, 2018

## Description

In Artifex Ghostscript 9.23 before 2018-08-24, a type confusion using the .shfill operator could be used by attackers able to supply crafted PostScript files to crash the interpreter or potentially execute code.

## Where it's fixed

| Platform | Product | Fixed in | Fix | Released |
|---|---|---|---|---|
| Linux | ghostscript Ubuntu 18.04.6 LTS (bionic) | 9.22~dfsg+1-0ubuntu1.2 | [ghostscript 9.22~dfsg+1-0ubuntu1.2](https://patchblox.com/security/data/fix/linux/ubuntu-bionic-ghostscript-9.22-dfsg-1-0ubuntu1.2.md) | Sep 9, 2018 |
| Linux | ghostscript-x Ubuntu 18.04.6 LTS (bionic) | 9.22~dfsg+1-0ubuntu1.2 | [ghostscript-x 9.22~dfsg+1-0ubuntu1.2](https://patchblox.com/security/data/fix/linux/ubuntu-bionic-ghostscript-x-9.22-dfsg-1-0ubuntu1.2.md) | Sep 9, 2018 |
| Linux | libgs9 Ubuntu 18.04.6 LTS (bionic) | 9.22~dfsg+1-0ubuntu1.2 | [libgs9 9.22~dfsg+1-0ubuntu1.2](https://patchblox.com/security/data/fix/linux/ubuntu-bionic-libgs9-9.22-dfsg-1-0ubuntu1.2.md) | Sep 9, 2018 |
| Linux | libgs9-common Ubuntu 18.04.6 LTS (bionic) | 9.22~dfsg+1-0ubuntu1.2 | [libgs9-common 9.22~dfsg+1-0ubuntu1.2](https://patchblox.com/security/data/fix/linux/ubuntu-bionic-libgs9-common-9.22-dfsg-1-0ubuntu1.2.md) | Sep 9, 2018 |

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Data as of 2026-11-07T12:40:37Z 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 Patchblox finds out-of-date software on Windows, macOS and Linux and updates it through release rings: https://patchblox.com/demo