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QSN-8791-1: Ghostscript vulnerability
September 21, 2026
Summary
Ghostscript could be made to crash or run programs as your login if it opened a specially crafted file.
Details
It was discovered that Ghostscript incorrectly handled JPEG 2000 image components with mismatched subsampling factors. An attacker could possibly use this issue to cause Ghostscript to crash or execute arbitrary code if it opened a specially crafted file.
Affected QuantaStor releases
| Release | Platform | Package | Exposure | Shipped version | Fixed version | Status |
|---|---|---|---|---|---|---|
| 6.9.1.001 | Ubuntu 22.04 LTS | ghostscript | Internally-facing | 9.55.0~dfsg1-0ubuntu5.15 | 9.55.0~dfsg1-0ubuntu5.14 | Fixed in this release |
| 6.9.1.001 | Ubuntu 22.04 LTS | libgs9 | Internally-facing | 9.55.0~dfsg1-0ubuntu5.15 | 9.55.0~dfsg1-0ubuntu5.14 | Fixed in this release |
| 6.9.1.001 | Ubuntu 22.04 LTS | libgs9-common | Internally-facing | 9.55.0~dfsg1-0ubuntu5.15 | 9.55.0~dfsg1-0ubuntu5.14 | Fixed in this release |
| 6.9.0.464 | Ubuntu 22.04 LTS | ghostscript | Internally-facing | 9.55.0~dfsg1-0ubuntu5.14 | 9.55.0~dfsg1-0ubuntu5.14 | Fixed in this release |
| 6.9.0.464 | Ubuntu 22.04 LTS | libgs9 | Internally-facing | 9.55.0~dfsg1-0ubuntu5.14 | 9.55.0~dfsg1-0ubuntu5.14 | Fixed in this release |
| 6.9.0.464 | Ubuntu 22.04 LTS | libgs9-common | Internally-facing | 9.55.0~dfsg1-0ubuntu5.14 | 9.55.0~dfsg1-0ubuntu5.14 | Fixed in this release |
| 6.8.6.015 | Ubuntu 22.04 LTS | ghostscript | Internally-facing | 9.55.0~dfsg1-0ubuntu5.13 | 9.55.0~dfsg1-0ubuntu5.14 | Fixed by QuantaStor security update |
| 6.8.6.015 | Ubuntu 22.04 LTS | libgs9 | Internally-facing | 9.55.0~dfsg1-0ubuntu5.13 | 9.55.0~dfsg1-0ubuntu5.14 | Fixed by QuantaStor security update |
| 6.8.6.015 | Ubuntu 22.04 LTS | libgs9-common | Internally-facing | 9.55.0~dfsg1-0ubuntu5.13 | 9.55.0~dfsg1-0ubuntu5.14 | Fixed by QuantaStor security update |
| 6.8.5.018 | Ubuntu 22.04 LTS | ghostscript | Internally-facing | 9.55.0~dfsg1-0ubuntu5.13 | 9.55.0~dfsg1-0ubuntu5.14 | Fixed by QuantaStor security update |
| 6.8.5.018 | Ubuntu 22.04 LTS | libgs9 | Internally-facing | 9.55.0~dfsg1-0ubuntu5.13 | 9.55.0~dfsg1-0ubuntu5.14 | Fixed by QuantaStor security update |
| 6.8.5.018 | Ubuntu 22.04 LTS | libgs9-common | Internally-facing | 9.55.0~dfsg1-0ubuntu5.13 | 9.55.0~dfsg1-0ubuntu5.14 | Fixed by QuantaStor security update |
| 6.8.4.038 | Ubuntu 22.04 LTS | ghostscript | Internally-facing | 9.55.0~dfsg1-0ubuntu5.13 | 9.55.0~dfsg1-0ubuntu5.14 | Fixed by QuantaStor security update |
| 6.8.4.038 | Ubuntu 22.04 LTS | libgs9 | Internally-facing | 9.55.0~dfsg1-0ubuntu5.13 | 9.55.0~dfsg1-0ubuntu5.14 | Fixed by QuantaStor security update |
| 6.8.4.038 | Ubuntu 22.04 LTS | libgs9-common | Internally-facing | 9.55.0~dfsg1-0ubuntu5.13 | 9.55.0~dfsg1-0ubuntu5.14 | Fixed by QuantaStor security update |
| 6.8.3.018 | Ubuntu 22.04 LTS | ghostscript | Internally-facing | 9.55.0~dfsg1-0ubuntu5.13 | 9.55.0~dfsg1-0ubuntu5.14 | Fixed by QuantaStor security update |
| 6.8.3.018 | Ubuntu 22.04 LTS | libgs9 | Internally-facing | 9.55.0~dfsg1-0ubuntu5.13 | 9.55.0~dfsg1-0ubuntu5.14 | Fixed by QuantaStor security update |
| 6.8.3.018 | Ubuntu 22.04 LTS | libgs9-common | Internally-facing | 9.55.0~dfsg1-0ubuntu5.13 | 9.55.0~dfsg1-0ubuntu5.14 | Fixed by QuantaStor security update |
| 6.8.2.002 | Ubuntu 22.04 LTS | ghostscript | Internally-facing | 9.55.0~dfsg1-0ubuntu5.13 | 9.55.0~dfsg1-0ubuntu5.14 | Fixed by QuantaStor security update |
| 6.8.2.002 | Ubuntu 22.04 LTS | libgs9 | Internally-facing | 9.55.0~dfsg1-0ubuntu5.13 | 9.55.0~dfsg1-0ubuntu5.14 | Fixed by QuantaStor security update |
| 6.8.2.002 | Ubuntu 22.04 LTS | libgs9-common | Internally-facing | 9.55.0~dfsg1-0ubuntu5.13 | 9.55.0~dfsg1-0ubuntu5.14 | Fixed by QuantaStor security update |
| 6.8.1.007 | Ubuntu 22.04 LTS | ghostscript | Internally-facing | 9.55.0~dfsg1-0ubuntu5.13 | 9.55.0~dfsg1-0ubuntu5.14 | Fixed by QuantaStor security update |
| 6.8.1.007 | Ubuntu 22.04 LTS | libgs9 | Internally-facing | 9.55.0~dfsg1-0ubuntu5.13 | 9.55.0~dfsg1-0ubuntu5.14 | Fixed by QuantaStor security update |
| 6.8.1.007 | Ubuntu 22.04 LTS | libgs9-common | Internally-facing | 9.55.0~dfsg1-0ubuntu5.13 | 9.55.0~dfsg1-0ubuntu5.14 | Fixed by QuantaStor security update |
| 6.8.0.205 | Ubuntu 22.04 LTS | ghostscript | Internally-facing | 9.55.0~dfsg1-0ubuntu5.13 | 9.55.0~dfsg1-0ubuntu5.14 | Fixed by QuantaStor security update |
| 6.8.0.205 | Ubuntu 22.04 LTS | libgs9 | Internally-facing | 9.55.0~dfsg1-0ubuntu5.13 | 9.55.0~dfsg1-0ubuntu5.14 | Fixed by QuantaStor security update |
| 6.8.0.205 | Ubuntu 22.04 LTS | libgs9-common | Internally-facing | 9.55.0~dfsg1-0ubuntu5.13 | 9.55.0~dfsg1-0ubuntu5.14 | Fixed 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
References
https://ubuntu.com/security/notices/USN-8791-1
https://nvd.nist.gov/vuln/detail/CVE-2026-39919
Update
Fixes marked Fixed by QuantaStor security update are applied by upgrading QuantaStor with security patches included (Upgrade Manager). Fixed package versions:
| Platform | Package | Version |
|---|---|---|
| Ubuntu 22.04 LTS | ghostscript | 9.55.0~dfsg1-0ubuntu5.14 |
| Ubuntu 24.04 LTS | ghostscript | 10.02.1~dfsg1-0ubuntu7.9 |
| resolute | ghostscript | 10.06.0~dfsg-3ubuntu1.1 |