RHSA-2026:55434
Vulnerability from csaf_opensuse - Published: 2026-08-17 04:00 - Updated: 2026-09-18 10:09Summary
Red Hat Security Advisory: gstreamer1-plugins-good security update
Severity
Moderate
Notes
Topic: An update for gstreamer1-plugins-good is now available for Red Hat Enterprise Linux 10.
Red Hat Product Security has rated this update as having a security impact of Moderate. A Common Vulnerability Scoring System (CVSS) base score, which gives a detailed severity rating, is available for each vulnerability from the CVE link(s) in the References section.
Details: GStreamer is a streaming media framework based on graphs of filters which operate on media data. The gstreamer1-plugins-good packages contain a collection of well-supported plug-ins of good quality and under the LGPL license.
Security Fix(es):
* gstreamer1-plugins-good: gstreamer: unsigned integer underflow in avidemux FUJIFILM strd parsing leading to out-of-bounds read/write (CVE-2026-73433)
* gstreamer1-plugins-good: gstreamer: out-of-bounds read in avidemux vprp video field descriptor parsing (CVE-2026-73434)
For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.
Terms of Use: This content is licensed under the Creative Commons Attribution 4.0 International License (https://creativecommons.org/licenses/by/4.0/). If you distribute this content, or a modified version of it, you must provide attribution to Red Hat Inc. and provide a link to the original.
A flaw was found in GStreamer gst-plugins-good (avidemux). When parsing FUJIFILM metadata in an AVI strd chunk, gst_avi_demux_parse_strd() decrements a remaining-length counter by fixed offsets (98 and 10 bytes) without verifying sufficient data remains. For crafted strd payloads of exactly 106 or 107 bytes, the counter underflows to a very large unsigned value, causing subsequent null-terminated string scanning to read far beyond the allocated heap buffer. Date-format normalization may also write beyond the buffer end. Confirmed impacts include heap out-of-bounds read, out-of-bounds write, heap information disclosure (adjacent data appearing in parsed metadata), and application crash/denial of service. The avidemux element is auto-plugged by playbin, decodebin, and gst-discoverer, so opening or previewing a crafted AVI is sufficient to trigger the issue. Fixed upstream in gst-plugins-good 1.28.6 (GStreamer-SA-2026-0072).
6.6 (Medium)
Affected products
Fixed
25 products
| Product | Identifier | Version | Remediation |
|---|---|---|---|
| Unresolved product id: AppStream-10.2.Z:gstreamer1-plugins-good-0:1.26.7-2.el10_2.5.aarch64 | — |
Vendor Fix
fix
|
|
| Unresolved product id: AppStream-10.2.Z:gstreamer1-plugins-good-0:1.26.7-2.el10_2.5.ppc64le | — |
Vendor Fix
fix
|
|
| Unresolved product id: AppStream-10.2.Z:gstreamer1-plugins-good-0:1.26.7-2.el10_2.5.s390x | — |
Vendor Fix
fix
|
|
| Unresolved product id: AppStream-10.2.Z:gstreamer1-plugins-good-0:1.26.7-2.el10_2.5.src | — |
Vendor Fix
fix
|
|
| Unresolved product id: AppStream-10.2.Z:gstreamer1-plugins-good-0:1.26.7-2.el10_2.5.x86_64 | — |
Vendor Fix
fix
|
|
| Unresolved product id: AppStream-10.2.Z:gstreamer1-plugins-good-debuginfo-0:1.26.7-2.el10_2.5.aarch64 | — |
Vendor Fix
fix
|
|
| Unresolved product id: AppStream-10.2.Z:gstreamer1-plugins-good-debuginfo-0:1.26.7-2.el10_2.5.ppc64le | — |
Vendor Fix
fix
|
|
| Unresolved product id: AppStream-10.2.Z:gstreamer1-plugins-good-debuginfo-0:1.26.7-2.el10_2.5.s390x | — |
Vendor Fix
fix
|
|
| Unresolved product id: AppStream-10.2.Z:gstreamer1-plugins-good-debuginfo-0:1.26.7-2.el10_2.5.x86_64 | — |
Vendor Fix
fix
|
|
| Unresolved product id: AppStream-10.2.Z:gstreamer1-plugins-good-debugsource-0:1.26.7-2.el10_2.5.aarch64 | — |
Vendor Fix
fix
|
|
| Unresolved product id: AppStream-10.2.Z:gstreamer1-plugins-good-debugsource-0:1.26.7-2.el10_2.5.ppc64le | — |
Vendor Fix
fix
|
|
| Unresolved product id: AppStream-10.2.Z:gstreamer1-plugins-good-debugsource-0:1.26.7-2.el10_2.5.s390x | — |
Vendor Fix
fix
|
|
| Unresolved product id: AppStream-10.2.Z:gstreamer1-plugins-good-debugsource-0:1.26.7-2.el10_2.5.x86_64 | — |
Vendor Fix
fix
|
|
| Unresolved product id: AppStream-10.2.Z:gstreamer1-plugins-good-gtk-0:1.26.7-2.el10_2.5.aarch64 | — |
Vendor Fix
fix
|
|
| Unresolved product id: AppStream-10.2.Z:gstreamer1-plugins-good-gtk-0:1.26.7-2.el10_2.5.ppc64le | — |
Vendor Fix
fix
|
|
| Unresolved product id: AppStream-10.2.Z:gstreamer1-plugins-good-gtk-0:1.26.7-2.el10_2.5.s390x | — |
Vendor Fix
fix
|
|
| Unresolved product id: AppStream-10.2.Z:gstreamer1-plugins-good-gtk-0:1.26.7-2.el10_2.5.x86_64 | — |
Vendor Fix
fix
|
|
| Unresolved product id: AppStream-10.2.Z:gstreamer1-plugins-good-gtk-debuginfo-0:1.26.7-2.el10_2.5.aarch64 | — |
Vendor Fix
fix
|
|
| Unresolved product id: AppStream-10.2.Z:gstreamer1-plugins-good-gtk-debuginfo-0:1.26.7-2.el10_2.5.ppc64le | — |
Vendor Fix
fix
|
|
| Unresolved product id: AppStream-10.2.Z:gstreamer1-plugins-good-gtk-debuginfo-0:1.26.7-2.el10_2.5.s390x | — |
Vendor Fix
fix
|
|
| Unresolved product id: AppStream-10.2.Z:gstreamer1-plugins-good-gtk-debuginfo-0:1.26.7-2.el10_2.5.x86_64 | — |
Vendor Fix
fix
|
|
| Unresolved product id: AppStream-10.2.Z:gstreamer1-plugins-good-qt6-debuginfo-0:1.26.7-2.el10_2.5.aarch64 | — |
Vendor Fix
fix
|
|
| Unresolved product id: AppStream-10.2.Z:gstreamer1-plugins-good-qt6-debuginfo-0:1.26.7-2.el10_2.5.ppc64le | — |
Vendor Fix
fix
|
|
| Unresolved product id: AppStream-10.2.Z:gstreamer1-plugins-good-qt6-debuginfo-0:1.26.7-2.el10_2.5.s390x | — |
Vendor Fix
fix
|
|
| Unresolved product id: AppStream-10.2.Z:gstreamer1-plugins-good-qt6-debuginfo-0:1.26.7-2.el10_2.5.x86_64 | — |
Vendor Fix
fix
|
Threats
Impact
Moderate
A flaw was found in GStreamer gst-plugins-good (avidemux). In gst_avi_demux_riff_parse_vprp(), the number of available gst_riff_vprp_video_field_desc entries is calculated by dividing the remaining buffer size by the attacker-controlled vprp->fields value, rather than by sizeof(gst_riff_vprp_video_field_desc). This can cause the parser to treat more field descriptors as available than fit in the input buffer, resulting in out-of-bounds reads. Processing a crafted AVI via playbin/decodebin can crash the application (denial of service). Fixed upstream in gst-plugins-good 1.28.6 (GStreamer-SA-2026-0072).
6.1 (Medium)
Affected products
Fixed
25 products, the same list as for
CVE-2026-73433
Threats
Impact
Moderate
References
15 references
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"text": "A flaw was found in GStreamer gst-plugins-good (avidemux). When parsing FUJIFILM metadata in an AVI strd chunk, gst_avi_demux_parse_strd() decrements a remaining-length counter by fixed offsets (98 and 10 bytes) without verifying sufficient data remains. For crafted strd payloads of exactly 106 or 107 bytes, the counter underflows to a very large unsigned value, causing subsequent null-terminated string scanning to read far beyond the allocated heap buffer. Date-format normalization may also write beyond the buffer end. Confirmed impacts include heap out-of-bounds read, out-of-bounds write, heap information disclosure (adjacent data appearing in parsed metadata), and application crash/denial of service. The avidemux element is auto-plugged by playbin, decodebin, and gst-discoverer, so opening or previewing a crafted AVI is sufficient to trigger the issue. Fixed upstream in gst-plugins-good 1.28.6 (GStreamer-SA-2026-0072).",
"title": "Vulnerability description"
},
{
"category": "summary",
"text": "gstreamer1-plugins-good: gstreamer: unsigned integer underflow in avidemux FUJIFILM strd parsing leading to out-of-bounds read/write",
"title": "Vulnerability summary"
},
{
"category": "general",
"text": "The CVSS score(s) listed for this vulnerability do not reflect the associated product\u0027s status, and are included for informational purposes to better understand the severity of this vulnerability.",
"title": "CVSS score applicability"
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"title": "gstreamer1-plugins-good: gstreamer: unsigned integer underflow in avidemux FUJIFILM strd parsing leading to out-of-bounds read/write"
},
{
"acknowledgments": [
{
"names": [
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}
],
"cve": "CVE-2026-73434",
"cwe": {
"id": "CWE-125",
"name": "Out-of-bounds Read"
},
"discovery_date": "2026-08-12T16:20:06.270000+00:00",
"ids": [
{
"system_name": "Red Hat Bugzilla ID",
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}
],
"notes": [
{
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"title": "Vulnerability description"
},
{
"category": "summary",
"text": "gstreamer1-plugins-good: gstreamer: out-of-bounds read in avidemux vprp video field descriptor parsing",
"title": "Vulnerability summary"
},
{
"category": "general",
"text": "The CVSS score(s) listed for this vulnerability do not reflect the associated product\u0027s status, and are included for informational purposes to better understand the severity of this vulnerability.",
"title": "CVSS score applicability"
}
],
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"threats": [
{
"category": "impact",
"details": "Moderate"
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"title": "gstreamer1-plugins-good: gstreamer: out-of-bounds read in avidemux vprp video field descriptor parsing"
}
]
}
Loading…
Loading…
Experimental. This forecast is provided for visualization only and may change without notice. Do not use it for operational decisions.
Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.
Sightings
| Author | Source | Type | Date | Other |
|---|
Nomenclature
- Seen: The vulnerability was mentioned, discussed, or observed by the user.
- Confirmed: The vulnerability has been validated from an analyst's perspective.
- Published Proof of Concept: A public proof of concept is available for this vulnerability.
- Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
- Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
- Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
- Not confirmed: The user expressed doubt about the validity of the vulnerability.
- Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.
Loading…
The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the
vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base
model, served locally by ML-Gateway.
They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.
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Related by attack behaviour
Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.
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