[USN-7138-1] Ghostscript vulnerabilities

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==========================================================================
Ubuntu Security Notice USN-7138-1
December 05, 2024

ghostscript vulnerabilities
==========================================================================

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

- Ubuntu 18.04 LTS
- Ubuntu 16.04 LTS

Summary:

Several security issues were fixed in Ghostscript.

Software Description:
- ghostscript: PostScript and PDF interpreter

Details:

It was discovered that Ghostscript incorrectly handled parsing certain PS
files. An attacker could use this issue to cause Ghostscript to crash,
resulting in a denial of service, or possibly execute arbitrary code.

Update instructions:

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

Ubuntu 18.04 LTS
  libgs9 9.26~dfsg+0-0ubuntu0.18.04.18+esm3
                                  Available with Ubuntu Pro

Ubuntu 16.04 LTS
  libgs9 9.26~dfsg+0-0ubuntu0.16.04.14+esm8
                                  Available with Ubuntu Pro

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

References:
  https://ubuntu.com/security/notices/USN-7138-1
  CVE-2024-46951, CVE-2024-46953, CVE-2024-46955, CVE-2024-46956