---
id: "CVE-2026-112214"
kind: "vulnerability"
aliases: ["CVE-2026-112214"]
title: "GStreamer: crafted ASF file can trigger oversized allocation and crash"
severity: "medium"
cvss: 6.5
epss: null
exploited: false
status: "open"
category: "package"
products: []
ecosystems: []
tags: ["gstreamer", "media-processing", "package", "self-hosted"]
not_affected_if: ["asf-not-decoded", "no-untrusted-media"]
published_at: "2026-10-19T13:16:57+00:00"
first_seen_at: "2026-10-23T21:57:18+00:00"
updated_at: "2026-10-25T03:57:04+00:00"
sources: [{"source": "nvd", "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-112214", "first_seen_at": "2026-10-23T21:57:18+00:00"}]
---

# GStreamer: crafted ASF file can trigger oversized allocation and crash

A flaw in the GStreamer ASF demuxer in gst-plugins-ugly lets a crafted ASF, WMV or WMA file set an attacker-controlled entry count in a Simple Index object that sizes a heap allocation without bounds. An attacker gets a denial of service when the allocation fails or the process runs out of memory.

_Summary, check and fix written by a model from the sources; labelled as such._

## How to check

- Check the installed gst-plugins-ugly version with `gst-inspect-1.0 asfdemux` or your package manager's query, such as `dpkg -l | grep gst-plugins-ugly`
- Find services that decode untrusted ASF, WMV or WMA media with GStreamer

## Fix

- Move gst-plugins-ugly to the fixed release from your distribution or upstream, version unknown from the sources
- Until patched, reject or do not decode untrusted ASF, WMV or WMA input

## Timeline

- 2026-10-23T21:57:18+00:00 nvd https://nvd.nist.gov/vuln/detail/CVE-2026-112214

## From the sources

A flaw was found in the GStreamer ASF demuxer in gst-plugins-ugly. When parsing a Simple Index object, an attacker-controlled entry count is used to size a heap allocation without being limited to the payload available in the object. Processing a crafted ASF, WMV, or WMA file can cause a very large memory allocation request and lead to denial of service if the allocation fails or the process is memory-constrained.

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