CVE-2021-3497
GStreamer before 1.18.4 might access already-freed memory in error code paths when demuxing certain malformed Matroska files.
02 Description
GStreamer before 1.18.4 might access already-freed memory in error code paths when demuxing certain malformed Matroska files.
03 Exploitation and scoring
- Exploitation
- Not assessed. CISA has not published an exploitation assessment for this record, and it is not in the KEV catalog. That is an absence of assessment, not a finding of no risk.
- SSVC decision
- Not assessed by CISA
- EPSS probability
- 1.21% probability of exploitation activity in the next 30 days.
- EPSS percentile
- Equal to or higher than the score of 68.0% of scored records. A rank, not a probability.
- NVD base score
- 7.8 (CVSS v3.x), scored by the NVD independently of the CNA.
- NVD CVSS vector
- CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
- NVD analysis status
- Modified. NVD last modified this record on 2026-06-17.
- Red Hat severity
- Moderate. Red Hat's rating for its own products, not a CVSS rating.
Exploit-prediction scores from FIRST. Independent scoring and analysis status from the NVD. Vendor severity from Red Hat. Exploitation assessment and catalog membership from CISA.
04 Metadata
- Published
- 2021-04-19 20:22Z5 YR AGO
- Last updated
- 2024-08-03 16:53Z2 YR AGO
- Reserved
- 2021-04-13
- Assigning CNA
- redhat
- Record state
- PUBLISHED
- Severity
- Not rated by the issuing CNA
- CNA CVSS vector
- Not published by the issuing CNA
- Weaknesses
- CWE-416Use After FreeVariant
- Data version
- 5.1
- Document digest
- 890be4d728a893aca94fd1e8c3f0e757548191e8f0f447f5fe65cff69d95b0d2
05 Affected products
06 References
- bugzilla.redhat.comhttps://bugzilla.redhat.com/show_bug.cgi?id=1945339
- gstreamer.freedesktop.orghttps://gstreamer.freedesktop.org/security/sa-2021-0002.html
- www.debian.orgDSA-4900https://www.debian.org/security/2021/dsa-4900
- lists.debian.org[debian-lts-announce] 20210426 [SECURITY] [DLA 2640-1] gst-plugins-good1.0 security updatehttps://lists.debian.org/debian-lts-announce/2021/04/msg00027.html
- security.gentoo.orgGLSA-202208-31https://security.gentoo.org/glsa/202208-31
07 Fixed in
AlmaLinux 8
- gstreamer1-plugins-good Fixed in 1.16.1-3.el8
- gstreamer1-plugins-good-gtk Fixed in 1.16.1-3.el8
Source: AlmaLinux, AlmaLinux OS. Copyright (c) 2023 AlmaLinux OS. Licensed under MIT License. Received through OSV.dev. Reformatted by exploit.cc.
CloudLinux 8
- gstreamer1-plugins-good Fixed in 1.16.1-3.el8
- gstreamer1-plugins-good-gtk Fixed in 1.16.1-3.el8
Derived from AlmaLinux 8. Partial coverage: only packages taken from AlmaLinux 8 are listed.
Source: CloudLinux errata, CloudLinux Inc. Derived from: AlmaLinux, AlmaLinux OS. Copyright (c) 2023 AlmaLinux OS. Licensed under MIT License. Received through OSV.dev. Reformatted by exploit.cc.
Debian 12
- gst-plugins-good1.0 Fixed in 1.18.4-2
Source: Debian Security Tracker, the Debian security team. Received through OSV.dev. Reformatted by exploit.cc.
Debian 13
- gst-plugins-good1.0 Fixed in 1.18.4-2
Source: Debian Security Tracker, the Debian security team. Received through OSV.dev. Reformatted by exploit.cc.
Debian 14
- gst-plugins-good1.0 Fixed in 1.18.4-2
Source: Debian Security Tracker, the Debian security team. Received through OSV.dev. Reformatted by exploit.cc.
Ubuntu 16.04 LTS
- gst-plugins-good1.0 Fixed in 1.8.3-1ubuntu0.5
Source: Ubuntu, Canonical Ltd. Licensed under CC BY-SA 4.0. Received through OSV.dev. Reformatted by exploit.cc.
Ubuntu 18.04 LTS
- gst-plugins-good1.0 Fixed in 1.14.5-0ubuntu1~18.04.2
Source: Ubuntu, Canonical Ltd. Licensed under CC BY-SA 4.0. Received through OSV.dev. Reformatted by exploit.cc.
Ubuntu 20.04 LTS
- gst-plugins-good1.0 Fixed in 1.16.2-1ubuntu2.1
Source: Ubuntu, Canonical Ltd. Licensed under CC BY-SA 4.0. Received through OSV.dev. Reformatted by exploit.cc.
A release or ecosystem missing from this list has no record here. It may be unaffected or not covered by the source. Source notices and licences.