Copyright © 2012 Red Hat, Inc. All rights reserved. Important 2026-10-06T15:56:02 ghostscript: ghostscript: -dSAFER sandbox bypass via Type 5 shading OOB write and procedure-stream use-after-free 7.8 CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H CWE-787

A flaw was found in Ghostscript. When Ghostscript renders a crafted PostScript or EPS document, it can bypass the -dSAFER sandbox and execute arbitrary shell commands in the context of the Ghostscript process. The issue chains memory corruption in document parsing with disabling of internal path access controls at runtime. An attacker can deliver the document directly or through formats that delegate rendering to Ghostscript (for example EPS import or print conversion workflows). Successful exploitation can compromise confidentiality, integrity, and availability of data accessible to the process running Ghostscript.

A flaw was found in Ghostscript. When Ghostscript renders a crafted PostScript or EPS document, it can bypass the -dSAFER sandbox and execute arbitrary shell commands in the context of the Ghostscript process. The issue chains memory corruption in document parsing with disabling of internal path access controls at runtime. An attacker can deliver the document directly or through formats that delegate rendering to Ghostscript (for example EPS import or print conversion workflows). Successful exploitation can compromise confidentiality, integrity, and availability of data accessible to the process running Ghostscript.

This vulnerability is rated Important severity because a crafted document can achieve arbitrary command execution when Ghostscript processes it, including when the -dSAFER sandbox flag is enabled. Exploitation requires the victim or an application to process attacker-controlled content locally; it is not a remote network attack against a listening Ghostscript service. In typical desktop and document-conversion scenarios, user interaction is required to open or convert the file. Ghostscript runs as an unprivileged user in most deployments, but commands still run with that user's privileges. SELinux targeted policy in enforcing mode did not prevent exploitation for common domains that run gs directly (for example unconfined_t and initrc_t in Red Hat testing). Some confined domains may limit follow-on file writes depending on policy; there is no Ghostscript-specific SELinux domain. Blocking ImageMagick's Ghostscript delegate via policy.xml is not a practical workaround on Red Hat Enterprise Linux 8, 9, or 10 because the ImageMagick RPM is not shipped on those releases. Red Hat Enterprise Linux 10 ships Ghostscript 10.02.1 and is affected; command execution under -dSAFER was confirmed on RHEL 10.2 x86_64 lab systems. Red Hat Enterprise Linux 9 (Ghostscript 9.54.0) and Red Hat Enterprise Linux 8 (Ghostscript 9.27) ship older upstream lines; impact on those releases is still under analysis relative to the public proof of concept, which targets the 10.x series. Red Hat In-Vehicle OS and Fedora ship Ghostscript builds that are being tracked under the same flaw. Red Hat Enterprise Linux 6 and 7 Extended Life Cycle Support include Ghostscript packages; affectedness is not yet resolved for those streams. Red Hat would like to thank Akiyoshi Kurita and V12 Security (V12 Security) for reporting this issue. No mitigation is currently available that meets Red Hat Product Security's standards for usability, deployment, applicability, or stability. Red Hat Enterprise Linux 10 2026-10-15T00:00:00Z RHSA-2026:83551 ghostscript-0:10.02.1-16.el10_2.3 Red Hat Enterprise Linux 8 2026-10-15T00:00:00Z RHSA-2026:83552 ghostscript-0:9.27-19.el8_10 Red Hat Enterprise Linux 9 2026-10-15T00:00:00Z RHSA-2026:83553 ghostscript-0:9.54.0-19.el9_8.3 Red Hat Enterprise Linux 6 Affected ghostscript Red Hat Enterprise Linux 6 Not affected ghostscript-fonts Red Hat Enterprise Linux 7 Affected ghostscript Red Hat Enterprise Linux 7 Affected ghostscript-chinese Red Hat Enterprise Linux 7 Not affected ghostscript-fonts https://www.cve.org/CVERecord?id=CVE-2026-101258 https://nvd.nist.gov/vuln/detail/CVE-2026-101258 https://github.com/v12-security/pocs/tree/main/ghostscript