[USN-7904-1] Ghostscript vulnerabilities

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Ubuntu Security Notice USN-7904-1
December 03, 2025

ghostscript vulnerabilities
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A security issue affects these releases of Ubuntu and its derivatives:

- Ubuntu 20.04 LTS
- Ubuntu 18.04 LTS
- Ubuntu 16.04 LTS

Summary:

Ghostscript could be made to crash if it wrote certain files.

Software Description:
- ghostscript: PostScript and PDF interpreter

Details:

Piotr Kajda discovered that Ghostscript incorrectly handled writing certain
files. An attacker could possibly use this issue to cause Ghostscript to
crash, resulting in a denial of service.

Update instructions:

The problem can be corrected by updating your system to the following
package versions:

Ubuntu 20.04 LTS
ghostscript 9.50~dfsg-5ubuntu4.15+esm2
Available with Ubuntu Pro
libgs9 9.50~dfsg-5ubuntu4.15+esm2
Available with Ubuntu Pro

Ubuntu 18.04 LTS
ghostscript 9.26~dfsg+0-0ubuntu0.18.04.18+esm5
Available with Ubuntu Pro
libgs9 9.26~dfsg+0-0ubuntu0.18.04.18+esm5
Available with Ubuntu Pro

Ubuntu 16.04 LTS
ghostscript 9.26~dfsg+0-0ubuntu0.16.04.14+esm10
Available with Ubuntu Pro
libgs9 9.26~dfsg+0-0ubuntu0.16.04.14+esm10
Available with Ubuntu Pro

In general, a standard system update will make all the necessary changes.

References:
https://ubuntu.com/security/notices/USN-7904-1
CVE-2025-59798, CVE-2025-59799