Medium
gst-plugins-bad1.0 — security advisory
A flaw was found in the GStreamer gst-plugins-bad package. When processing a malformed H.266/VVC video stream with a crafted aspect ratio indicator value, the H.266 parser performs an out-of-bounds read of up to 8 bytes from adjacent memory. This flaw allows an attacker to craft a malicious H.266 video file or stream that, when processed by a GStreamer-based application, could leak limited memory contents through video metadata, potentially exposing sensitive information from the application's address space.
- Products
- gst-plugins-bad1.0
- Affected versions
- 1.12.3-1ubuntu1, 1.12.3-1ubuntu2, 1.12.3-2ubuntu1, 1.12.4-2ubuntu1, 1.12.4-2ubuntu2, 1.13.1-1ubuntu1, 1.13.91-1ubuntu1, 1.14.0-1ubuntu1, 1.14.1-1ubuntu1~ubuntu18.04.1, 1.14.4-1ubuntu1~ubuntu18.04.1, 1.14.5-0ubuntu1~18.04.1, 1.14.5-0ubuntu1~18.04.1+esm1, 1.14.5-0ubuntu1~18.04.1+esm2, 1.16.1-1ubuntu1, 1.16.1-1ubuntu3, 1.16.1-1ubuntu4, 1.16.1-1ubuntu5, 1.16.1-1ubuntu6, 1.16.1-1ubuntu8, 1.16.2-1ubuntu1, 1.16.2-1ubuntu2, 1.16.2-2.1ubuntu1, 1.16.2-2ubuntu1, 1.16.3-0ubuntu1, 1.16.3-0ubuntu1.1, 1.16.3-0ubuntu1.1+esm1, 1.16.3-0ubuntu1.1+esm2, 1.18.5-1ubuntu1, 1.18.5-1ubuntu3, 1.2.0-3ubuntu5, 1.2.1-1ubuntu1, 1.2.1-1ubuntu2, 1.2.2-1ubuntu1, 1.2.2-1ubuntu2, 1.2.2-1ubuntu4, 1.2.3-1ubuntu1, 1.2.3-1ubuntu2, 1.2.4-1~ubuntu1, 1.2.4-1~ubuntu1.1, 1.2.4-1~ubuntu1.1+esm1, 1.20.0-2ubuntu2, 1.20.1-1ubuntu2, 1.20.3-0ubuntu1, 1.20.3-0ubuntu1.1, 1.20.3-0ubuntu1.1+esm2, 1.20.3-0ubuntu1.1+esm3, 1.22.4-1ubuntu1, 1.22.4-1ubuntu2, 1.22.4-1ubuntu4, 1.22.9-2ubuntu1, 1.24.0-1ubuntu3, 1.24.0-1ubuntu4, 1.24.2-1ubuntu4, 1.24.2-1ubuntu4+esm1, 1.24.2-1ubuntu4+esm2, 1.26.0-1ubuntu2, 1.26.2-1ubuntu1, 1.26.3-1ubuntu1, 1.26.4-1ubuntu1, 1.26.5-1ubuntu2, 1.27.2-1ubuntu1, 1.27.90-1ubuntu2, 1.28.0-1ubuntu2, 1.28.1-2ubuntu2, 1.28.1-2ubuntu3, 1.28.2-1ubuntu1, 1.28.2-1ubuntu1.1, 1.28.2-1ubuntu1.2, 1.28.2-1ubuntu2, 1.28.4-1ubuntu1, 1.28.4-1ubuntu2, 1.28.6-1ubuntu1, 1.6.0-1ubuntu1, 1.6.1-1ubuntu1, 1.6.2-1ubuntu1, 1.7.1-1ubuntu1, 1.7.1-1ubuntu3, 1.7.1-1ubuntu4, 1.7.2-1ubuntu1, 1.7.90-1ubuntu2, 1.7.91-1ubuntu1, 1.8.0-1ubuntu1, 1.8.1-1ubuntu0.1, 1.8.2-1ubuntu0.1, 1.8.2-1ubuntu0.2, 1.8.3-1ubuntu0.2, 1.8.3-1ubuntu0.2+esm1, 1.8.3-1ubuntu0.2+esm2
- Fixed versions
- Not specified
- CVEs
- CVE-2026-12891
- Confirmed fixed CVEs
- Not specified
- Updated in this feed
- 31 Oct 2026, 02:54 UTC · Revision 1
Source evidence
A flaw was found in the GStreamer gst-plugins-bad package. When processing a malformed H.266/VVC video stream with a crafted aspect ratio indicator value, the H.266 parser performs an out-of-bounds read of up to 8 bytes from adjacent memory. This flaw allows an attacker to craft a malicious H.266 video file or stream that, when processed by a GStreamer-based application, could leak limited memory contents through video metadata, potentially exposing sensitive information from the application's address space.
osv:UBUNTU-CVE-2026-12891
gst-plugins-bad1.0
Fixed versions: Not specified
gst-plugins-bad1.0
Fixed versions: Not specified
gst-plugins-bad1.0
Fixed versions: Not specified
gst-plugins-bad1.0
Fixed versions: Not specified
gst-plugins-bad1.0
Fixed versions: Not specified
gst-plugins-bad1.0
Fixed versions: Not specified
gst-plugins-bad1.0
Fixed versions: Not specified
gst-plugins-bad1.0
Fixed versions: Not specified
gst-plugins-bad1.0
Fixed versions: Not specified
Complete source record
{
"id": "ddcbaa58f9d93abb68416bc146a602586b4e1f8c8c2cf5ecb859edca01d430bc",
"url": "https://osv.dev/vulnerability/UBUNTU-CVE-2026-12891",
"method": "structured",
"payload": {
"kind": "advisory",
"title": "UBUNTU-CVE-2026-12891",
"summary": "A flaw was found in the GStreamer gst-plugins-bad package. When processing a malformed H.266/VVC video stream with a crafted aspect ratio indicator value, the H.266 parser performs an out-of-bounds read of up to 8 bytes from adjacent memory. This flaw allows an attacker to craft a malicious H.266 video file or stream that, when processed by a GStreamer-based application, could leak limited memory contents through video metadata, potentially exposing sensitive information from the application's address space.",
"evidence": "osv:UBUNTU-CVE-2026-12891",
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{
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{
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{
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{
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{
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{
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{
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"structured": {
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"aliases": [
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"metrics": [
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},
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},
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}
]
}
},
{
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{
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],
"package": {
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"purl": "pkg:deb/ubuntu/gst-plugins-bad1.0?arch=source&distro=esm-apps%2Ffocal",
"ecosystem": "Ubuntu:Pro:20.04:LTS"
},
"versions": [
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"modified": "2026-10-17T12:59:53.070017742Z",
"provider": "osv",
"upstream": [
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],
"references": [
"https://ubuntu.com/security/CVE-2026-12891",
"https://www.cve.org/CVERecord?id=CVE-2026-12891",
"https://bugzilla.redhat.com/show_bug.cgi?id=2491318",
"https://gitlab.freedesktop.org/gstreamer/gstreamer/-/work_items/5109",
"https://access.redhat.com/security/cve/CVE-2026-12891"
]
},
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{
"value": "CVE-2026-12891",
"evidence": "/upstream"
}
],
"security_relevant": true,
"severity_evidence": "/severity/0/score"
},
"source_id": "core-osv",
"document_id": 359848,
"published_at": "2026-06-23T21:16:00+00:00"
}