CVE-2021-3497

gstreamer-plugins-good: Use-after-free in matroska demuxing

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Severity

Moderate

Red Hat Product Security

7.8

CVSS 3.1

Review impact separately from score.

Published · March 15, 2021

Updated · July 31, 2026

Description

GStreamer before 1.18.4 might access already-freed memory in error code paths when demuxing certain malformed Matroska files.

CVSS score applicability

The CVSS score(s) listed for this vulnerability do not reflect the associated product's status, and are included for informational purposes to better understand the severity of this vulnerability.

Mitigation

No mitigation is specified in collected source.

CVSS / CWE

CVSS 3.1 · 7.8
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

CWE-416 · Use After Free