DEBIAN-CVE-2026-16730
A flaw was found in dbus-broker. When the process file-descriptor limit is reached, EMFILE/ENFILE errors during peer setup (notably SO_PEERPIDFD) are handled as fatal failures, causing the broker to exit. A local attacker who can open many connections to the user session bus can trigger this and deny service to the desktop session. Flatpak applications can reach the host session bus through the dbus proxy.
DEBIAN-CVE-2026-16730
Primary source · Revision 1
Imported from structured advisory data. Source references identify upstream records or fields; verify affected versions and your deployed configuration.
Security context
Source reference: osv:DEBIAN-CVE-2026-16730
dbus-broker
Source reference: /affected/0/package/name
- Affected versions
- 33-1
Source reference:
/affected/0/versions34-1Source reference:
/affected/0/versions35-1Source reference:
/affected/0/versions35-1~bpo12+1Source reference:
/affected/0/versions35-2Source reference:
/affected/0/versions36-1Source reference:
/affected/0/versions36-1~bpo12+1Source reference:
/affected/0/versions36-2Source reference:
/affected/0/versions36-2~bpo12+1Source reference:
/affected/0/versions37-1Source reference:
/affected/0/versions37-2Source reference:
/affected/0/versions37-2~bpo12+1Source reference:
/affected/0/versions37-3Source reference:
/affected/0/versions37-4Source reference:
/affected/0/versions37-5Source reference:
/affected/0/versions - Fixed versions
- Not stated in this record
- Prerequisites
- Not stated in this record
dbus-broker
Source reference: /affected/1/package/name
- Affected versions
- 37-2
Source reference:
/affected/1/versions37-3Source reference:
/affected/1/versions37-4Source reference:
/affected/1/versions37-5Source reference:
/affected/1/versions - Fixed versions
- Not stated in this record
- Prerequisites
- Not stated in this record
dbus-broker
Source reference: /affected/2/package/name
- Affected versions
- 37-2
Source reference:
/affected/2/versions37-3Source reference:
/affected/2/versions37-4Source reference:
/affected/2/versions37-5Source reference:
/affected/2/versions - Fixed versions
- Not stated in this record
- Prerequisites
- Not stated in this record
Structured affected-version data
Original package identities and version rules from this source.
[
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
}
]
}
],
"package": {
"name": "dbus-broker",
"purl": "pkg:deb/debian/dbus-broker?arch=source&distro=bookworm",
"ecosystem": "Debian:12"
},
"versions": [
"33-1",
"34-1",
"35-1",
"35-1~bpo12+1",
"35-2",
"36-1",
"36-1~bpo12+1",
"36-2",
"36-2~bpo12+1",
"37-1",
"37-2",
"37-2~bpo12+1",
"37-3",
"37-4",
"37-5"
],
"database_specific": {
"source": "https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-16730.json"
},
"ecosystem_specific": {
"urgency": "not yet assigned"
}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
}
]
}
],
"package": {
"name": "dbus-broker",
"purl": "pkg:deb/debian/dbus-broker?arch=source&distro=trixie",
"ecosystem": "Debian:13"
},
"versions": [
"37-2",
"37-3",
"37-4",
"37-5"
],
"database_specific": {
"source": "https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-16730.json"
},
"ecosystem_specific": {
"urgency": "not yet assigned"
}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
}
]
}
],
"package": {
"name": "dbus-broker",
"purl": "pkg:deb/debian/dbus-broker?arch=source&distro=forky",
"ecosystem": "Debian:14"
},
"versions": [
"37-2",
"37-3",
"37-4",
"37-5"
],
"database_specific": {
"source": "https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-16730.json"
},
"ecosystem_specific": {
"urgency": "not yet assigned"
}
}
]Publisher severity
No explicit severity was provided.
- Event
- #56157 · Revision 1
- Added to Heist Feed
- Publisher date