A flaw was found in GStreamer's MXF demuxer plugin (gst-plugins-bad). When processing a specially crafted MXF media file, the demuxer indexes its internal delta-entry and slice-offset tables using values from the file without validating that they are within the bounds of the allocated arrays. A local attacker who tricks a user into opening a malicious MXF file can cause the application to crash (denial of service) and may be able to read limited amounts of heap memory adjacent to the affected arrays.

No CVSS v4.0

Attack Vector Local

Attack Complexity Low

Privileges Required None

Scope Unchanged

Confidentiality Impact Low

Integrity Impact None

Availability Impact High

User Interaction Required

No CVSS v3.0

No CVSS v2

This CVE is not in the KEV list.

No EPSS score available.

Key SSVC decision points have not yet been added.

Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).

Vendor Product Default status Versions
Red Hat Red Hat Enterprise Linux 10 affected —
Red Hat Red Hat Enterprise Linux 6 unaffected —
Red Hat Red Hat Enterprise Linux 7 unaffected —
Red Hat Red Hat Enterprise Linux 7 unaffected —
Red Hat Red Hat Enterprise Linux 8 unaffected —
Red Hat Red Hat Enterprise Linux 9 affected —

No data.

No data.

OpenCVE Enrichment is a feature of OpenCVE that uses AI to automatically link vendors and products to CVEs. Learn more on GitHub.

No data.

Project Subscriptions

Vendors Products
Redhat Subscribe
Enterprise Linux Subscribe
Rhel Els Subscribe
Advisories

No advisories yet.

Fixes

Solution

No solution given by the vendor.

Workaround

Mitigation is to avoid parsing untrusted MXF content with the GStreamer MXF demuxer until a fixed package is available, or to disable the mxfdemux plugin where the application allows plugin selection.

References
Link Providers
https://access.redhat.com/security/cve/CVE-2026-121601 cve-icon cve-icon
https://bugzilla.redhat.com/show_bug.cgi?id=2565920 cve-icon cve-icon
https://gstreamer.freedesktop.org/security/sa-2026-0093.html cve-icon cve-icon
History

Mon, 09 Nov 2026 13:15:00 +0000

Type Values Removed Values Added
Description A flaw was found in GStreamer's MXF demuxer plugin (gst-plugins-bad). When processing a specially crafted MXF media file, the demuxer indexes its internal delta-entry and slice-offset tables using values from the file without validating that they are within the bounds of the allocated arrays. A local attacker who tricks a user into opening a malicious MXF file can cause the application to crash (denial of service) and may be able to read limited amounts of heap memory adjacent to the affected arrays.
Title Gstreamer1-plugins-bad-free: gstreamer1-plugins-bad-free: out-of-bounds read in mxfdemux via unchecked delta_id and slice index
First Time appeared Redhat
Redhat enterprise Linux
Redhat rhel Els
Weaknesses CWE-125
CPEs cpe:/a:redhat:enterprise_linux:10
cpe:/a:redhat:enterprise_linux:8
cpe:/a:redhat:enterprise_linux:9
cpe:/o:redhat:rhel_els:6
cpe:/o:redhat:rhel_els:7
Vendors & Products Redhat
Redhat enterprise Linux
Redhat rhel Els
References
Metrics cvssV3_1

{'score': 6.1, 'vector': 'CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:H'}

Projects

Sign in to view the affected projects.

cve-icon MITRE

Status: PUBLISHED

Assigner: redhat

Published:

Updated: 2026-11-09T13:00:59.610Z

Reserved: 2026-11-03T16:17:34.895Z

Link: CVE-2026-121601

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Awaiting Analysis

Published: 2026-11-09T13:17:06.910

Modified: 2026-11-09T13:17:07.027

Link: CVE-2026-121601

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-11-09T15:00:17Z

Weaknesses