HighFix available
bluez — security advisory
A stack-based buffer overflow vulnerability exists in BlueZ, the Linux Bluetooth protocol stack. A remote user within Bluetooth radio range can send a specially crafted Extended Inquiry Response (EIR) packet that causes a buffer overflow when the target device performs Bluetooth discovery. This vulnerability can lead to a Denial of Service (DoS) by crashing the bluetoothd service and may allow for arbitrary code execution.
- Products
- bluez
- Affected versions
- 5.35-0ubuntu2, 5.36-0ubuntu1, 5.37-0ubuntu5, 5.37-0ubuntu5.1, 5.37-0ubuntu5.3, 5.37-0ubuntu5.3+esm1, 5.37-0ubuntu5.3+esm2, 5.37-0ubuntu5.3+esm3, 5.37-0ubuntu5.3+esm4, 5.37-0ubuntu5.3+esm5, 5.46-0ubuntu3, 5.46-0ubuntu4, 5.48-0ubuntu3, 5.48-0ubuntu3.1, 5.48-0ubuntu3.2, 5.48-0ubuntu3.3, 5.48-0ubuntu3.4, 5.48-0ubuntu3.5, 5.48-0ubuntu3.6, 5.48-0ubuntu3.7, 5.48-0ubuntu3.8, 5.48-0ubuntu3.9, 5.48-0ubuntu3.9+esm1, 5.48-0ubuntu3.9+esm2, 5.50-0ubuntu4, 5.51-0ubuntu1, 5.51-0ubuntu2, 5.52-0ubuntu1, 5.52-0ubuntu2, 5.53-0ubuntu1, 5.53-0ubuntu2, 5.53-0ubuntu3, 5.53-0ubuntu3.1, 5.53-0ubuntu3.2, 5.53-0ubuntu3.3, 5.53-0ubuntu3.4, 5.53-0ubuntu3.5, 5.53-0ubuntu3.6, 5.53-0ubuntu3.7, 5.53-0ubuntu3.8, 5.53-0ubuntu3.9, 5.60-0ubuntu2, 5.62-0ubuntu1, 5.62-0ubuntu2, 5.63-0ubuntu1, 5.63-0ubuntu2, 5.64-0ubuntu1, 5.64-0ubuntu1.1, 5.64-0ubuntu1.3, 5.64-0ubuntu1.4, 5.68-0ubuntu1, 5.70-0ubuntu1, 5.70-0ubuntu2, 5.70-0ubuntu3, 5.71-0ubuntu3, 5.71-1ubuntu2, 5.71-1ubuntu3, 5.72-0ubuntu1, 5.72-0ubuntu3, 5.72-0ubuntu4, 5.72-0ubuntu5, 5.72-0ubuntu5.1, 5.72-0ubuntu5.3, 5.72-0ubuntu5.4, 5.72-0ubuntu5.5, 5.72-0ubuntu5.6, 5.83-1~exp1, 5.84-1, 5.85-1, 5.85-2, 5.85-3, 5.85-4, 5.85-4ubuntu0.1, 5.85-4ubuntu0.2, 5.85-4ubuntu1, 5.87-1, 5.87-2, 5.87-3, 5.87-4
- Fixed versions
- 5.37-0ubuntu5.3+esm6, 5.48-0ubuntu3.9+esm3, 5.53-0ubuntu3.9+esm1, 5.64-0ubuntu1.5, 5.72-0ubuntu5.7, 5.85-4ubuntu0.3
- CVEs
- CVE-2026-80186
- Confirmed fixed CVEs
- Not specified
- Updated in this feed
- 31 Oct 2026, 03:20 UTC · Revision 1
Source evidence
A stack-based buffer overflow vulnerability exists in BlueZ, the Linux Bluetooth protocol stack. A remote user within Bluetooth radio range can send a specially crafted Extended Inquiry Response (EIR) packet that causes a buffer overflow when the target device performs Bluetooth discovery. This vulnerability can lead to a Denial of Service (DoS) by crashing the bluetoothd service and may allow for arbitrary code execution.
osv:UBUNTU-CVE-2026-80186
bluez
Fixed versions: 5.37-0ubuntu5.3+esm6
bluez
Fixed versions: 5.48-0ubuntu3.9+esm3
bluez
Fixed versions: 5.53-0ubuntu3.9+esm1
bluez
Fixed versions: 5.64-0ubuntu1.5
bluez
Fixed versions: 5.72-0ubuntu5.7
bluez
Fixed versions: Not specified
bluez
Fixed versions: 5.85-4ubuntu0.3
Complete source record
{
"id": "7ca89e3906f6433f265c0f62684679685c2151095be1d6f1557064b734ac0d49",
"url": "https://osv.dev/vulnerability/UBUNTU-CVE-2026-80186",
"method": "structured",
"payload": {
"kind": "advisory",
"title": "UBUNTU-CVE-2026-80186",
"summary": "A stack-based buffer overflow vulnerability exists in BlueZ, the Linux Bluetooth protocol stack. A remote user within Bluetooth radio range can send a specially crafted Extended Inquiry Response (EIR) packet that causes a buffer overflow when the target device performs Bluetooth discovery. This vulnerability can lead to a Denial of Service (DoS) by crashing the bluetoothd service and may allow for arbitrary code execution.",
"evidence": "osv:UBUNTU-CVE-2026-80186",
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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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{
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{
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{
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{
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{
"value": "5.48-0ubuntu3.3",
"evidence": "/affected/1/versions"
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{
"value": "5.48-0ubuntu3.4",
"evidence": "/affected/1/versions"
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{
"value": "5.48-0ubuntu3.5",
"evidence": "/affected/1/versions"
},
{
"value": "5.48-0ubuntu3.6",
"evidence": "/affected/1/versions"
},
{
"value": "5.48-0ubuntu3.7",
"evidence": "/affected/1/versions"
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{
"value": "5.48-0ubuntu3.8",
"evidence": "/affected/1/versions"
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{
"value": "5.48-0ubuntu3.9",
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{
"value": "5.48-0ubuntu3.9+esm1",
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{
"value": "5.48-0ubuntu3.9+esm2",
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]
},
{
"name": {
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"prerequisites": [],
"fixed_versions": [
{
"value": "5.53-0ubuntu3.9+esm1",
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],
"affected_versions": [
{
"value": "5.50-0ubuntu4",
"evidence": "/affected/2/versions"
},
{
"value": "5.51-0ubuntu1",
"evidence": "/affected/2/versions"
},
{
"value": "5.51-0ubuntu2",
"evidence": "/affected/2/versions"
},
{
"value": "5.52-0ubuntu1",
"evidence": "/affected/2/versions"
},
{
"value": "5.52-0ubuntu2",
"evidence": "/affected/2/versions"
},
{
"value": "5.53-0ubuntu1",
"evidence": "/affected/2/versions"
},
{
"value": "5.53-0ubuntu2",
"evidence": "/affected/2/versions"
},
{
"value": "5.53-0ubuntu3",
"evidence": "/affected/2/versions"
},
{
"value": "5.53-0ubuntu3.1",
"evidence": "/affected/2/versions"
},
{
"value": "5.53-0ubuntu3.2",
"evidence": "/affected/2/versions"
},
{
"value": "5.53-0ubuntu3.3",
"evidence": "/affected/2/versions"
},
{
"value": "5.53-0ubuntu3.4",
"evidence": "/affected/2/versions"
},
{
"value": "5.53-0ubuntu3.5",
"evidence": "/affected/2/versions"
},
{
"value": "5.53-0ubuntu3.6",
"evidence": "/affected/2/versions"
},
{
"value": "5.53-0ubuntu3.7",
"evidence": "/affected/2/versions"
},
{
"value": "5.53-0ubuntu3.8",
"evidence": "/affected/2/versions"
},
{
"value": "5.53-0ubuntu3.9",
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]
},
{
"name": {
"value": "bluez",
"evidence": "/affected/3/package/name"
},
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"fixed_versions": [
{
"value": "5.64-0ubuntu1.5",
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}
],
"affected_versions": [
{
"value": "5.60-0ubuntu2",
"evidence": "/affected/3/versions"
},
{
"value": "5.62-0ubuntu1",
"evidence": "/affected/3/versions"
},
{
"value": "5.62-0ubuntu2",
"evidence": "/affected/3/versions"
},
{
"value": "5.63-0ubuntu1",
"evidence": "/affected/3/versions"
},
{
"value": "5.63-0ubuntu2",
"evidence": "/affected/3/versions"
},
{
"value": "5.64-0ubuntu1",
"evidence": "/affected/3/versions"
},
{
"value": "5.64-0ubuntu1.1",
"evidence": "/affected/3/versions"
},
{
"value": "5.64-0ubuntu1.3",
"evidence": "/affected/3/versions"
},
{
"value": "5.64-0ubuntu1.4",
"evidence": "/affected/3/versions"
}
]
},
{
"name": {
"value": "bluez",
"evidence": "/affected/4/package/name"
},
"prerequisites": [],
"fixed_versions": [
{
"value": "5.72-0ubuntu5.7",
"evidence": "/affected/4/ranges"
}
],
"affected_versions": [
{
"value": "5.68-0ubuntu1",
"evidence": "/affected/4/versions"
},
{
"value": "5.70-0ubuntu1",
"evidence": "/affected/4/versions"
},
{
"value": "5.70-0ubuntu2",
"evidence": "/affected/4/versions"
},
{
"value": "5.70-0ubuntu3",
"evidence": "/affected/4/versions"
},
{
"value": "5.71-0ubuntu3",
"evidence": "/affected/4/versions"
},
{
"value": "5.71-1ubuntu2",
"evidence": "/affected/4/versions"
},
{
"value": "5.71-1ubuntu3",
"evidence": "/affected/4/versions"
},
{
"value": "5.72-0ubuntu1",
"evidence": "/affected/4/versions"
},
{
"value": "5.72-0ubuntu3",
"evidence": "/affected/4/versions"
},
{
"value": "5.72-0ubuntu4",
"evidence": "/affected/4/versions"
},
{
"value": "5.72-0ubuntu5",
"evidence": "/affected/4/versions"
},
{
"value": "5.72-0ubuntu5.1",
"evidence": "/affected/4/versions"
},
{
"value": "5.72-0ubuntu5.3",
"evidence": "/affected/4/versions"
},
{
"value": "5.72-0ubuntu5.4",
"evidence": "/affected/4/versions"
},
{
"value": "5.72-0ubuntu5.5",
"evidence": "/affected/4/versions"
},
{
"value": "5.72-0ubuntu5.6",
"evidence": "/affected/4/versions"
}
]
},
{
"name": {
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},
"prerequisites": [],
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"affected_versions": [
{
"value": "5.85-4",
"evidence": "/affected/5/versions"
},
{
"value": "5.85-4ubuntu1",
"evidence": "/affected/5/versions"
},
{
"value": "5.87-1",
"evidence": "/affected/5/versions"
},
{
"value": "5.87-2",
"evidence": "/affected/5/versions"
},
{
"value": "5.87-3",
"evidence": "/affected/5/versions"
},
{
"value": "5.87-4",
"evidence": "/affected/5/versions"
}
]
},
{
"name": {
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"evidence": "/affected/6/package/name"
},
"prerequisites": [],
"fixed_versions": [
{
"value": "5.85-4ubuntu0.3",
"evidence": "/affected/6/ranges"
}
],
"affected_versions": [
{
"value": "5.83-1~exp1",
"evidence": "/affected/6/versions"
},
{
"value": "5.84-1",
"evidence": "/affected/6/versions"
},
{
"value": "5.85-1",
"evidence": "/affected/6/versions"
},
{
"value": "5.85-2",
"evidence": "/affected/6/versions"
},
{
"value": "5.85-3",
"evidence": "/affected/6/versions"
},
{
"value": "5.85-4",
"evidence": "/affected/6/versions"
},
{
"value": "5.85-4ubuntu0.1",
"evidence": "/affected/6/versions"
},
{
"value": "5.85-4ubuntu0.2",
"evidence": "/affected/6/versions"
}
]
}
],
"severity": "high",
"structured": {
"id": "UBUNTU-CVE-2026-80186",
"aliases": [
"UBUNTU-CVE-2026-80186"
],
"metrics": [
{
"type": "CVSS_V3",
"score": "CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:H"
},
{
"type": "Ubuntu",
"score": "medium"
}
],
"affected": [
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
},
{
"fixed": "5.37-0ubuntu5.3+esm6"
}
]
}
],
"package": {
"name": "bluez",
"purl": "pkg:deb/ubuntu/bluez?arch=source&distro=esm-infra-legacy%2Fxenial",
"ecosystem": "Ubuntu:Pro:16.04:LTS"
},
"versions": [
"5.35-0ubuntu2",
"5.36-0ubuntu1",
"5.37-0ubuntu5",
"5.37-0ubuntu5.1",
"5.37-0ubuntu5.3",
"5.37-0ubuntu5.3+esm1",
"5.37-0ubuntu5.3+esm2",
"5.37-0ubuntu5.3+esm3",
"5.37-0ubuntu5.3+esm4",
"5.37-0ubuntu5.3+esm5"
],
"database_specific": {
"source": "https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-80186.json"
},
"ecosystem_specific": {
"binaries": [
{
"binary_name": "bluetooth",
"binary_version": "5.37-0ubuntu5.3+esm6"
},
{
"binary_name": "bluez",
"binary_version": "5.37-0ubuntu5.3+esm6"
},
{
"binary_name": "bluez-cups",
"binary_version": "5.37-0ubuntu5.3+esm6"
},
{
"binary_name": "bluez-hcidump",
"binary_version": "5.37-0ubuntu5.3+esm6"
},
{
"binary_name": "bluez-obexd",
"binary_version": "5.37-0ubuntu5.3+esm6"
},
{
"binary_name": "bluez-tests",
"binary_version": "5.37-0ubuntu5.3+esm6"
},
{
"binary_name": "libbluetooth3",
"binary_version": "5.37-0ubuntu5.3+esm6"
}
],
"availability": "Available with Ubuntu Pro with Legacy support add-on: https://ubuntu.com/pro"
}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
},
{
"fixed": "5.48-0ubuntu3.9+esm3"
}
]
}
],
"package": {
"name": "bluez",
"purl": "pkg:deb/ubuntu/bluez?arch=source&distro=esm-infra%2Fbionic",
"ecosystem": "Ubuntu:Pro:18.04:LTS"
},
"versions": [
"5.46-0ubuntu3",
"5.46-0ubuntu4",
"5.48-0ubuntu3",
"5.48-0ubuntu3.1",
"5.48-0ubuntu3.2",
"5.48-0ubuntu3.3",
"5.48-0ubuntu3.4",
"5.48-0ubuntu3.5",
"5.48-0ubuntu3.6",
"5.48-0ubuntu3.7",
"5.48-0ubuntu3.8",
"5.48-0ubuntu3.9",
"5.48-0ubuntu3.9+esm1",
"5.48-0ubuntu3.9+esm2"
],
"database_specific": {
"source": "https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-80186.json"
},
"ecosystem_specific": {
"binaries": [
{
"binary_name": "bluetooth",
"binary_version": "5.48-0ubuntu3.9+esm3"
},
{
"binary_name": "bluez",
"binary_version": "5.48-0ubuntu3.9+esm3"
},
{
"binary_name": "bluez-cups",
"binary_version": "5.48-0ubuntu3.9+esm3"
},
{
"binary_name": "bluez-hcidump",
"binary_version": "5.48-0ubuntu3.9+esm3"
},
{
"binary_name": "bluez-obexd",
"binary_version": "5.48-0ubuntu3.9+esm3"
},
{
"binary_name": "bluez-tests",
"binary_version": "5.48-0ubuntu3.9+esm3"
},
{
"binary_name": "libbluetooth3",
"binary_version": "5.48-0ubuntu3.9+esm3"
}
],
"availability": "Available with Ubuntu Pro (Infra-only): https://ubuntu.com/pro"
}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
},
{
"fixed": "5.53-0ubuntu3.9+esm1"
}
]
}
],
"package": {
"name": "bluez",
"purl": "pkg:deb/ubuntu/bluez?arch=source&distro=esm-infra%2Ffocal",
"ecosystem": "Ubuntu:Pro:20.04:LTS"
},
"versions": [
"5.50-0ubuntu4",
"5.51-0ubuntu1",
"5.51-0ubuntu2",
"5.52-0ubuntu1",
"5.52-0ubuntu2",
"5.53-0ubuntu1",
"5.53-0ubuntu2",
"5.53-0ubuntu3",
"5.53-0ubuntu3.1",
"5.53-0ubuntu3.2",
"5.53-0ubuntu3.3",
"5.53-0ubuntu3.4",
"5.53-0ubuntu3.5",
"5.53-0ubuntu3.6",
"5.53-0ubuntu3.7",
"5.53-0ubuntu3.8",
"5.53-0ubuntu3.9"
],
"database_specific": {
"source": "https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-80186.json"
},
"ecosystem_specific": {
"binaries": [
{
"binary_name": "bluetooth",
"binary_version": "5.53-0ubuntu3.9+esm1"
},
{
"binary_name": "bluez",
"binary_version": "5.53-0ubuntu3.9+esm1"
},
{
"binary_name": "bluez-cups",
"binary_version": "5.53-0ubuntu3.9+esm1"
},
{
"binary_name": "bluez-hcidump",
"binary_version": "5.53-0ubuntu3.9+esm1"
},
{
"binary_name": "bluez-obexd",
"binary_version": "5.53-0ubuntu3.9+esm1"
},
{
"binary_name": "bluez-tests",
"binary_version": "5.53-0ubuntu3.9+esm1"
},
{
"binary_name": "libbluetooth3",
"binary_version": "5.53-0ubuntu3.9+esm1"
}
],
"availability": "Available with Ubuntu Pro (Infra-only): https://ubuntu.com/pro"
}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
},
{
"fixed": "5.64-0ubuntu1.5"
}
]
}
],
"package": {
"name": "bluez",
"purl": "pkg:deb/ubuntu/bluez?arch=source&distro=jammy",
"ecosystem": "Ubuntu:22.04:LTS"
},
"versions": [
"5.60-0ubuntu2",
"5.62-0ubuntu1",
"5.62-0ubuntu2",
"5.63-0ubuntu1",
"5.63-0ubuntu2",
"5.64-0ubuntu1",
"5.64-0ubuntu1.1",
"5.64-0ubuntu1.3",
"5.64-0ubuntu1.4"
],
"database_specific": {
"source": "https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-80186.json"
},
"ecosystem_specific": {
"binaries": [
{
"binary_name": "bluetooth",
"binary_version": "5.64-0ubuntu1.5"
},
{
"binary_name": "bluez",
"binary_version": "5.64-0ubuntu1.5"
},
{
"binary_name": "bluez-cups",
"binary_version": "5.64-0ubuntu1.5"
},
{
"binary_name": "bluez-hcidump",
"binary_version": "5.64-0ubuntu1.5"
},
{
"binary_name": "bluez-meshd",
"binary_version": "5.64-0ubuntu1.5"
},
{
"binary_name": "bluez-obexd",
"binary_version": "5.64-0ubuntu1.5"
},
{
"binary_name": "bluez-tests",
"binary_version": "5.64-0ubuntu1.5"
},
{
"binary_name": "libbluetooth3",
"binary_version": "5.64-0ubuntu1.5"
}
],
"availability": "No subscription required"
}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
},
{
"fixed": "5.72-0ubuntu5.7"
}
]
}
],
"package": {
"name": "bluez",
"purl": "pkg:deb/ubuntu/bluez?arch=source&distro=noble",
"ecosystem": "Ubuntu:24.04:LTS"
},
"versions": [
"5.68-0ubuntu1",
"5.70-0ubuntu1",
"5.70-0ubuntu2",
"5.70-0ubuntu3",
"5.71-0ubuntu3",
"5.71-1ubuntu2",
"5.71-1ubuntu3",
"5.72-0ubuntu1",
"5.72-0ubuntu3",
"5.72-0ubuntu4",
"5.72-0ubuntu5",
"5.72-0ubuntu5.1",
"5.72-0ubuntu5.3",
"5.72-0ubuntu5.4",
"5.72-0ubuntu5.5",
"5.72-0ubuntu5.6"
],
"database_specific": {
"source": "https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-80186.json"
},
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{
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"events": [
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],
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},
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],
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}
],
"modified": "2026-10-17T13:01:10.095335964Z",
"provider": "osv",
"upstream": [
"CVE-2026-80186"
],
"references": [
"https://ubuntu.com/security/CVE-2026-80186",
"https://www.cve.org/CVERecord?id=CVE-2026-80186",
"https://github.com/bluez/bluez/security/advisories/GHSA-68h6-5qgp-3975",
"https://ubuntu.com/security/notices/USN-8908-1"
]
},
"related_cves": [
{
"value": "CVE-2026-80186",
"evidence": "/upstream"
}
],
"security_relevant": true,
"severity_evidence": "/severity/0/score"
},
"source_id": "core-osv",
"document_id": 361111,
"published_at": "2026-08-25T22:17:00+00:00"
}