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QSN-8949-1: Ghostscript vulnerabilities

October 21, 2026

Summary

Several security issues were fixed in Ghostscript.

Details

Rick de Jager discovered that Ghostscript incorrectly handled memory under certain circumstances when processing PostScript documents. If a user or automated system were tricked into processing a specially crafted document, an attacker could possibly use this issue to bypass the sandbox and execute arbitrary code. (CVE-2026-101258)

It was discovered that Ghostscript incorrectly handled memory when converting certain fonts. If a user or automated system were tricked into processing a specially crafted file, an attacker could possibly use this issue to cause Ghostscript to crash, or possibly execute arbitrary code. (CVE-2026-103226)

Paulos Yibelo discovered that Ghostscript did not properly validate certain operands when loading fonts. If a user or automated system were tricked into processing a specially crafted file, an attacker could possibly use this issue to bypass the sandbox and execute arbitrary code. (No CVE number)

Affected QuantaStor releases

ReleasePlatformPackageExposureShipped versionFixed versionStatus
6.9.1.001Ubuntu 22.04 LTSghostscriptInternally-facing9.55.0~dfsg1-0ubuntu5.159.55.0~dfsg1-0ubuntu5.15Fixed in this release
6.9.1.001Ubuntu 22.04 LTSlibgs9Internally-facing9.55.0~dfsg1-0ubuntu5.159.55.0~dfsg1-0ubuntu5.15Fixed in this release
6.9.1.001Ubuntu 22.04 LTSlibgs9-commonInternally-facing9.55.0~dfsg1-0ubuntu5.159.55.0~dfsg1-0ubuntu5.15Fixed in this release
6.9.0.464Ubuntu 22.04 LTSghostscriptInternally-facing9.55.0~dfsg1-0ubuntu5.149.55.0~dfsg1-0ubuntu5.15Fixed by QuantaStor security update
6.9.0.464Ubuntu 22.04 LTSlibgs9Internally-facing9.55.0~dfsg1-0ubuntu5.149.55.0~dfsg1-0ubuntu5.15Fixed by QuantaStor security update
6.9.0.464Ubuntu 22.04 LTSlibgs9-commonInternally-facing9.55.0~dfsg1-0ubuntu5.149.55.0~dfsg1-0ubuntu5.15Fixed by QuantaStor security update
6.8.6.015Ubuntu 22.04 LTSghostscriptInternally-facing9.55.0~dfsg1-0ubuntu5.139.55.0~dfsg1-0ubuntu5.15Fixed by QuantaStor security update
6.8.6.015Ubuntu 22.04 LTSlibgs9Internally-facing9.55.0~dfsg1-0ubuntu5.139.55.0~dfsg1-0ubuntu5.15Fixed by QuantaStor security update
6.8.6.015Ubuntu 22.04 LTSlibgs9-commonInternally-facing9.55.0~dfsg1-0ubuntu5.139.55.0~dfsg1-0ubuntu5.15Fixed by QuantaStor security update
6.8.5.018Ubuntu 22.04 LTSghostscriptInternally-facing9.55.0~dfsg1-0ubuntu5.139.55.0~dfsg1-0ubuntu5.15Fixed by QuantaStor security update
6.8.5.018Ubuntu 22.04 LTSlibgs9Internally-facing9.55.0~dfsg1-0ubuntu5.139.55.0~dfsg1-0ubuntu5.15Fixed by QuantaStor security update
6.8.5.018Ubuntu 22.04 LTSlibgs9-commonInternally-facing9.55.0~dfsg1-0ubuntu5.139.55.0~dfsg1-0ubuntu5.15Fixed by QuantaStor security update
6.8.4.038Ubuntu 22.04 LTSghostscriptInternally-facing9.55.0~dfsg1-0ubuntu5.139.55.0~dfsg1-0ubuntu5.15Fixed by QuantaStor security update
6.8.4.038Ubuntu 22.04 LTSlibgs9Internally-facing9.55.0~dfsg1-0ubuntu5.139.55.0~dfsg1-0ubuntu5.15Fixed by QuantaStor security update
6.8.4.038Ubuntu 22.04 LTSlibgs9-commonInternally-facing9.55.0~dfsg1-0ubuntu5.139.55.0~dfsg1-0ubuntu5.15Fixed by QuantaStor security update
6.8.3.018Ubuntu 22.04 LTSghostscriptInternally-facing9.55.0~dfsg1-0ubuntu5.139.55.0~dfsg1-0ubuntu5.15Fixed by QuantaStor security update
6.8.3.018Ubuntu 22.04 LTSlibgs9Internally-facing9.55.0~dfsg1-0ubuntu5.139.55.0~dfsg1-0ubuntu5.15Fixed by QuantaStor security update
6.8.3.018Ubuntu 22.04 LTSlibgs9-commonInternally-facing9.55.0~dfsg1-0ubuntu5.139.55.0~dfsg1-0ubuntu5.15Fixed by QuantaStor security update
6.8.2.002Ubuntu 22.04 LTSghostscriptInternally-facing9.55.0~dfsg1-0ubuntu5.139.55.0~dfsg1-0ubuntu5.15Fixed by QuantaStor security update
6.8.2.002Ubuntu 22.04 LTSlibgs9Internally-facing9.55.0~dfsg1-0ubuntu5.139.55.0~dfsg1-0ubuntu5.15Fixed by QuantaStor security update
6.8.2.002Ubuntu 22.04 LTSlibgs9-commonInternally-facing9.55.0~dfsg1-0ubuntu5.139.55.0~dfsg1-0ubuntu5.15Fixed by QuantaStor security update
6.8.1.007Ubuntu 22.04 LTSghostscriptInternally-facing9.55.0~dfsg1-0ubuntu5.139.55.0~dfsg1-0ubuntu5.15Fixed by QuantaStor security update
6.8.1.007Ubuntu 22.04 LTSlibgs9Internally-facing9.55.0~dfsg1-0ubuntu5.139.55.0~dfsg1-0ubuntu5.15Fixed by QuantaStor security update
6.8.1.007Ubuntu 22.04 LTSlibgs9-commonInternally-facing9.55.0~dfsg1-0ubuntu5.139.55.0~dfsg1-0ubuntu5.15Fixed by QuantaStor security update
6.8.0.205Ubuntu 22.04 LTSghostscriptInternally-facing9.55.0~dfsg1-0ubuntu5.139.55.0~dfsg1-0ubuntu5.15Fixed by QuantaStor security update
6.8.0.205Ubuntu 22.04 LTSlibgs9Internally-facing9.55.0~dfsg1-0ubuntu5.139.55.0~dfsg1-0ubuntu5.15Fixed by QuantaStor security update
6.8.0.205Ubuntu 22.04 LTSlibgs9-commonInternally-facing9.55.0~dfsg1-0ubuntu5.139.55.0~dfsg1-0ubuntu5.15Fixed by QuantaStor security update

Internally-facing: only accessible when logged into the QuantaStor console/ssh as the qadmin administrative sudo user; generally lower priority. Externally-facing: part of a service the storage platform presents on the network (or the kernel), so potentially reachable over the network.

CVEs

CVE-2026-103226, CVE-2026-101258

References

https://ubuntu.com/security/notices/USN-8949-1

https://nvd.nist.gov/vuln/detail/CVE-2026-103226

https://nvd.nist.gov/vuln/detail/CVE-2026-101258

https://bugs.launchpad.net/bugs/2171528

Update

Fixes marked Fixed by QuantaStor security update are applied by upgrading QuantaStor with security patches included (Upgrade Manager). Fixed package versions:

PlatformPackageVersion
bionicghostscript9.26~dfsg+0-0ubuntu0.18.04.18+esm6
Ubuntu 20.04 LTSghostscript9.50~dfsg-5ubuntu4.15+esm3
Ubuntu 22.04 LTSghostscript9.55.0~dfsg1-0ubuntu5.15
Ubuntu 24.04 LTSghostscript10.02.1~dfsg1-0ubuntu7.10
resoluteghostscript10.06.0~dfsg-3ubuntu1.2
stonkingghostscript10.07.1~dfsg-1ubuntu2.1
xenialghostscript9.26~dfsg+0-0ubuntu0.16.04.14+esm11