Vulnerability in ghostscript: UNKNOWN READ in gx_dc_default_fill_masked

ghostscript Updated 02 Oct 2025

Summary

21/02/2022

Disclosed on

MEDIUM

Severity

Yes i

Fix available

Medium

Severity

Not published

CVSS Score

OSV-2022-177: UNKNOWN READ in gx_dc_default_fill_masked. Affects ghostscript versions >= 2be8b436910cfc8b013a13df000c3c854cf3c5c5, < c8051ae666672cb7ca39531e28ec85636e1ce6d5. Fixed in c8051ae666672cb7ca39531e28ec85636e1ce6d5. How to fix ↓

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Background

Ghostscript is an open-source interpreter for the PostScript language and the PDF file format. It is widely used for rendering and converting documents. The vulnerability in ghostscript, identified as UNKNOWN READ in gx_dc_default_fill_masked, can lead to a crash. This vulnerability was reported through the OSS-Fuzz project.

Vulnerability Detail

The vulnerability occurs in the gx_dc_default_fill_masked function of ghostscript. It results in an UNKNOWN READ crash state. The exact cause and impact of this vulnerability are not specified in the provided information. However, it is important to note that UNKNOWN READ vulnerabilities can potentially lead to information disclosure or other security issues. The vulnerability was reported through the OSS-Fuzz project, which focuses on fuzzing and finding vulnerabilities in open-source software.

How To Fix

Minimum fixed version

c8051ae666672cb7ca39531e28ec85636e1ce6d5

This is the first release that contains the fix.

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Workaround

No specific workaround is mentioned in the provided information. It is advisable to follow the recommended fix and update ghostscript to a patched version.

Conclusion

In conclusion, the vulnerability in ghostscript, identified as UNKNOWN READ in gx_dc_default_fill_masked, can lead to a crash. It is recommended to update ghostscript to a version that includes the fix for this vulnerability. No specific workarounds are mentioned, and the fix is available in commit c8051ae666672cb7ca39531e28ec85636e1ce6d5 of the ghostpdl.git repository. For further support on vulnerability remediation, you can reach out to DevNack.com.

See every vulnerability recorded for ghostscript →