MediumFix available
dbus — security advisory
An issue was discovered in dbus >= 1.3.0 before 1.12.18. The DBusServer in libdbus, as used in dbus-daemon, leaks file descriptors when a message exceeds the per-message file descriptor limit. A local attacker with access to the D-Bus system bus or another system service's private AF_UNIX socket could use this to make the system service reach its file descriptor limit, denying service to subsequent D-Bus clients.
- Products
- dbus
- Affected versions
- Not specified
- Fixed versions
- 1.12.16-r1, 1.12.16-r3, 1.12.18-r0, 1.12.28-r1
- CVEs
- CVE-2020-12049
- Confirmed fixed CVEs
- Not specified
- Updated in this feed
- 1 Nov 2026, 12:01 UTC · Revision 1
Source evidence
An issue was discovered in dbus >= 1.3.0 before 1.12.18. The DBusServer in libdbus, as used in dbus-daemon, leaks file descriptors when a message exceeds the per-message file descriptor limit. A local attacker with access to the D-Bus system bus or another system service's private AF_UNIX socket could use this to make the system service reach its file descriptor limit, denying service to subsequent D-Bus clients.
osv:ALPINE-CVE-2020-12049
dbus
Fixed versions: 1.12.16-r1
dbus
Fixed versions: 1.12.16-r3
dbus
Fixed versions: 1.12.18-r0
dbus
Fixed versions: 1.12.18-r0
dbus
Fixed versions: 1.12.18-r0
dbus
Fixed versions: 1.12.18-r0
dbus
Fixed versions: 1.12.18-r0
dbus
Fixed versions: 1.12.18-r0
dbus
Fixed versions: 1.12.18-r0
dbus
Fixed versions: 1.12.18-r0
dbus
Fixed versions: 1.12.18-r0
dbus
Fixed versions: 1.12.18-r0
dbus
Fixed versions: 1.12.18-r0
dbus
Fixed versions: 1.12.18-r0
dbus
Fixed versions: 1.12.18-r0
dbus
Fixed versions: 1.12.28-r1
Complete source record
{
"id": "4bb41fa529d243d158f4719c554a97a2252b615fa58105e0c8f6759b1c9ae4c9",
"url": "https://osv.dev/vulnerability/ALPINE-CVE-2020-12049",
"method": "structured",
"payload": {
"kind": "advisory",
"title": "ALPINE-CVE-2020-12049",
"summary": "An issue was discovered in dbus >= 1.3.0 before 1.12.18. The DBusServer in libdbus, as used in dbus-daemon, leaks file descriptors when a message exceeds the per-message file descriptor limit. A local attacker with access to the D-Bus system bus or another system service's private AF_UNIX socket could use this to make the system service reach its file descriptor limit, denying service to subsequent D-Bus clients.",
"evidence": "osv:ALPINE-CVE-2020-12049",
"products": [
{
"name": {
"value": "dbus",
"evidence": "/affected/0/package/name"
},
"prerequisites": [],
"fixed_versions": [
{
"value": "1.12.16-r1",
"evidence": "/affected/0/ranges"
}
],
"affected_versions": []
},
{
"name": {
"value": "dbus",
"evidence": "/affected/1/package/name"
},
"prerequisites": [],
"fixed_versions": [
{
"value": "1.12.16-r3",
"evidence": "/affected/1/ranges"
}
],
"affected_versions": []
},
{
"name": {
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},
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{
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}
],
"affected_versions": []
},
{
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{
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"evidence": "/affected/3/ranges"
}
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"affected_versions": []
},
{
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"evidence": "/affected/4/package/name"
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"fixed_versions": [
{
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"evidence": "/affected/4/ranges"
}
],
"affected_versions": []
},
{
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{
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"evidence": "/affected/6/ranges"
}
],
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},
{
"name": {
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},
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{
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}
],
"affected_versions": []
},
{
"name": {
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"evidence": "/affected/8/package/name"
},
"prerequisites": [],
"fixed_versions": [
{
"value": "1.12.18-r0",
"evidence": "/affected/8/ranges"
}
],
"affected_versions": []
},
{
"name": {
"value": "dbus",
"evidence": "/affected/9/package/name"
},
"prerequisites": [],
"fixed_versions": [
{
"value": "1.12.18-r0",
"evidence": "/affected/9/ranges"
}
],
"affected_versions": []
},
{
"name": {
"value": "dbus",
"evidence": "/affected/10/package/name"
},
"prerequisites": [],
"fixed_versions": [
{
"value": "1.12.18-r0",
"evidence": "/affected/10/ranges"
}
],
"affected_versions": []
},
{
"name": {
"value": "dbus",
"evidence": "/affected/11/package/name"
},
"prerequisites": [],
"fixed_versions": [
{
"value": "1.12.18-r0",
"evidence": "/affected/11/ranges"
}
],
"affected_versions": []
},
{
"name": {
"value": "dbus",
"evidence": "/affected/12/package/name"
},
"prerequisites": [],
"fixed_versions": [
{
"value": "1.12.18-r0",
"evidence": "/affected/12/ranges"
}
],
"affected_versions": []
},
{
"name": {
"value": "dbus",
"evidence": "/affected/13/package/name"
},
"prerequisites": [],
"fixed_versions": [
{
"value": "1.12.18-r0",
"evidence": "/affected/13/ranges"
}
],
"affected_versions": []
},
{
"name": {
"value": "dbus",
"evidence": "/affected/14/package/name"
},
"prerequisites": [],
"fixed_versions": [
{
"value": "1.12.18-r0",
"evidence": "/affected/14/ranges"
}
],
"affected_versions": []
},
{
"name": {
"value": "dbus",
"evidence": "/affected/15/package/name"
},
"prerequisites": [],
"fixed_versions": [
{
"value": "1.12.28-r1",
"evidence": "/affected/15/ranges"
}
],
"affected_versions": []
}
],
"severity": "medium",
"structured": {
"id": "ALPINE-CVE-2020-12049",
"aliases": [
"ALPINE-CVE-2020-12049"
],
"metrics": [
{
"type": "CVSS_V3",
"score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H"
}
],
"affected": [
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "1.3.0"
},
{
"fixed": "1.12.16-r1"
}
]
}
],
"package": {
"name": "dbus",
"purl": "pkg:apk/alpine/dbus?arch=source",
"ecosystem": "Alpine:v3.10"
},
"database_specific": {
"source": "https://storage.googleapis.com/cve-osv-conversion/alpine/ALPINE-CVE-2020-12049.json"
},
"ecosystem_specific": {}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "1.3.0"
},
{
"fixed": "1.12.16-r3"
}
]
}
],
"package": {
"name": "dbus",
"purl": "pkg:apk/alpine/dbus?arch=source",
"ecosystem": "Alpine:v3.11"
},
"database_specific": {
"source": "https://storage.googleapis.com/cve-osv-conversion/alpine/ALPINE-CVE-2020-12049.json"
},
"ecosystem_specific": {}
},
{
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"events": [
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{
"fixed": "1.12.18-r0"
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],
"package": {
"name": "dbus",
"purl": "pkg:apk/alpine/dbus?arch=source",
"ecosystem": "Alpine:v3.12"
},
"database_specific": {
"source": "https://storage.googleapis.com/cve-osv-conversion/alpine/ALPINE-CVE-2020-12049.json"
},
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{
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"events": [
{
"introduced": "1.3.0"
},
{
"fixed": "1.12.18-r0"
}
]
}
],
"package": {
"name": "dbus",
"purl": "pkg:apk/alpine/dbus?arch=source",
"ecosystem": "Alpine:v3.13"
},
"database_specific": {
"source": "https://storage.googleapis.com/cve-osv-conversion/alpine/ALPINE-CVE-2020-12049.json"
},
"ecosystem_specific": {}
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{
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}
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"package": {
"name": "dbus",
"purl": "pkg:apk/alpine/dbus?arch=source",
"ecosystem": "Alpine:v3.14"
},
"database_specific": {
"source": "https://storage.googleapis.com/cve-osv-conversion/alpine/ALPINE-CVE-2020-12049.json"
},
"ecosystem_specific": {}
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{
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{
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"events": [
{
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}
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"package": {
"name": "dbus",
"purl": "pkg:apk/alpine/dbus?arch=source",
"ecosystem": "Alpine:v3.15"
},
"database_specific": {
"source": "https://storage.googleapis.com/cve-osv-conversion/alpine/ALPINE-CVE-2020-12049.json"
},
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},
{
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{
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},
{
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}
]
}
],
"package": {
"name": "dbus",
"purl": "pkg:apk/alpine/dbus?arch=source",
"ecosystem": "Alpine:v3.16"
},
"database_specific": {
"source": "https://storage.googleapis.com/cve-osv-conversion/alpine/ALPINE-CVE-2020-12049.json"
},
"ecosystem_specific": {}
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{
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"events": [
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},
{
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],
"package": {
"name": "dbus",
"purl": "pkg:apk/alpine/dbus?arch=source",
"ecosystem": "Alpine:v3.17"
},
"database_specific": {
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"package": {
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],
"package": {
"name": "dbus",
"purl": "pkg:apk/alpine/dbus?arch=source",
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},
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]
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],
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"name": "dbus",
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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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"events": [
{
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},
{
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}
]
}
],
"package": {
"name": "dbus",
"purl": "pkg:apk/alpine/dbus?arch=source",
"ecosystem": "Alpine:v3.24"
},
"database_specific": {
"source": "https://storage.googleapis.com/cve-osv-conversion/alpine/ALPINE-CVE-2020-12049.json"
},
"ecosystem_specific": {}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "1.3.0"
},
{
"fixed": "1.12.28-r1"
}
]
}
],
"package": {
"name": "dbus",
"purl": "pkg:apk/alpine/dbus?arch=source",
"ecosystem": "Alpine:v3.9"
},
"database_specific": {
"source": "https://storage.googleapis.com/cve-osv-conversion/alpine/ALPINE-CVE-2020-12049.json"
},
"ecosystem_specific": {}
}
],
"modified": "2026-10-26T11:17:55.103139172Z",
"provider": "osv",
"upstream": [
"CVE-2020-12049"
],
"references": [
"https://security.alpinelinux.org/vuln/CVE-2020-12049"
]
},
"related_cves": [
{
"value": "CVE-2020-12049",
"evidence": "/upstream"
}
],
"security_relevant": true,
"severity_evidence": "/severity/0/score"
},
"source_id": "core-osv",
"document_id": 450362,
"published_at": "2020-06-08T17:15:09.91+00:00"
}