Gstreamer1-plugins-good: gst-plugins-good: 4-byte heap over-read in gst_matroska_parse_flac_stream_headers when parsing flac codec data in matroska containers
Summary
| CVE | CVE-2026-17072 |
|---|---|
| State | PUBLISHED |
| Assigner | redhat |
| Source Priority | CVE Program / NVD first with legacy fallback |
| Published | 2026-07-28 11:17:02 UTC |
| Updated | 2026-07-28 16:22:01 UTC |
| Description | A flaw was found in GStreamer's gst-plugins-good. A heap-based out-of-bounds read of 4 bytes can occur when parsing FLAC audio stream headers embedded in a Matroska or WebM container file. The vulnerability is triggered by a boundary check that does not account for the full size of the data being copied, allowing a small read past the end of the allocated buffer. An attacker could exploit this by crafting a malicious Matroska or WebM file and tricking a user into opening it, potentially leaking a small amount of adjacent heap memory. |
Risk And Classification
Primary CVSS: v3.1 3.3 LOW from [email protected]
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:N
EPSS: 0.001160000 probability, percentile 0.019020000 (date 2026-07-29)
Problem Types: CWE-125 | CWE-125 Out-of-bounds Read
| Version | Source | Type | Score | Severity | Vector |
|---|---|---|---|---|---|
| 3.1 | [email protected] | Secondary | 3.3 | LOW | CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:N |
| 3.1 | CNA | CVSS | 3.3 | LOW | CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:N |
CVSS v3.1 Breakdown
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:N
Vendor Declared Affected Products
| Source | Vendor | Product | Version | Platforms |
|---|---|---|---|---|
| CNA | Red Hat | Red Hat Enterprise Linux 10 | Not specified | Not specified |
| CNA | Red Hat | Red Hat Enterprise Linux 6 | Not specified | Not specified |
| CNA | Red Hat | Red Hat Enterprise Linux 7 | Not specified | Not specified |
| CNA | Red Hat | Red Hat Enterprise Linux 7 | Not specified | Not specified |
| CNA | Red Hat | Red Hat Enterprise Linux 8 | Not specified | Not specified |
| CNA | Red Hat | Red Hat Enterprise Linux 9 | Not specified | Not specified |
References
| Reference | Source | Link | Tags |
|---|---|---|---|
| access.redhat.com/security/cve/CVE-2026-17072 | [email protected] | access.redhat.com | |
| gitlab.freedesktop.org/gstreamer/gstreamer-security/-/merge_requests/111 | [email protected] | gitlab.freedesktop.org | |
| bugzilla.redhat.com/show_bug.cgi | [email protected] | bugzilla.redhat.com | |
| CVE Program record | CVE.ORG | www.cve.org | canonical |
| NVD vulnerability detail | NVD | nvd.nist.gov | canonical, analysis |
Vendor Comments And Credit
Discovery Credit
CNA: Upstream acknowledges Yazan Balawneh (CyStack Security Team) as the original reporter. (en)
Additional Advisory Data
| Source | Time | Event |
|---|---|---|
| CNA | 2026-07-14T00:00:00.000Z | Reported to Red Hat. |
| CNA | 2026-07-28T10:00:00.000Z | Made public. |
Workarounds
CNA: The matroska demuxer plugin can be disabled to prevent this vulnerability from being triggered: 1. Build time: Pass '-Dgst-plugins-good:matroska=disabled' to the meson build system to exclude the entire matroska plugin from the build. 2. Runtime: Remove the libgstmatroska shared library from the GStreamer plugin directory, or use the GST_PLUGIN_PATH environment variable to point to a plugin directory that excludes the matroska plugin. Note: Disabling the matroska plugin will prevent playback of all MKV and WebM files.