# CVE-2026-1940: An incomplete fix for allows an out-of-bounds read in gst_wavparse_adtl_chunk() function. The patch added a size validation c

Source: https://junglewise.ai/threats/cve-2026-1940-an-incomplete-fix-for-allows-an-out-of-bounds-read-in-gst-wavparse  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Published: 2026-03-23  
License: CC BY 4.0 with a link back

CVE-2026-1940 · Severity: medium · CVSS 5.1 · Published 2026-03-23

An incomplete fix for CVE-2024-47778 allows an out-of-bounds read in gst_wavparse_adtl_chunk() function. The patch added a size validation check lsize + 8 > size, but it does not account for the GST_ROUND_UP_2(lsize) used in the actual offset calculation. When lsize is an odd number, the parser advances more bytes than validated, causing OOB read.

Technologies: [Debian Linux](https://junglewise.ai/threats/technologies/debian), [Gstreamer](https://junglewise.ai/threats/technologies/gstreamer), [Redhat Enterprise Linux](https://junglewise.ai/threats/technologies/enterprise-linux). Vendors: [Debian](https://junglewise.ai/threats/vendors/debian), [Freedesktop](https://junglewise.ai/threats/vendors/freedesktop), [Gstreamer](https://junglewise.ai/threats/vendors/gstreamer), [Redhat](https://junglewise.ai/threats/vendors/redhat).

## Quick answers

**Is CVE-2026-1940 exploited in the wild?** No. Junglewise Threat Intelligence has no report of CVE-2026-1940 being exploited in the wild.

**How severe is CVE-2026-1940?** Medium severity, with a CVSS score of 5.1, published 23 March 2026.

**Which products and versions are affected?** Debian Linux, Freedesktop Gst-Plugins-Good, Gstreamer, Redhat Enterprise Linux. The advisory does not name versions.

**Is there a fix for CVE-2026-1940?** No fixed version is recorded yet. Check the vendor's advisory in the references below. If you run it, Junglewise drafts a mitigation that fits your setup and applies it once you approve, with senior security engineers behind it.

**Am I affected by CVE-2026-1940?** Check whether you run Debian Linux, Freedesktop Gst-Plugins-Good, Gstreamer or one of the others listed. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

## Affected products

- Debian Linux
- Freedesktop Gst-Plugins-Good
- Gstreamer
- Redhat Enterprise Linux

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