#1142850 dbus-broker: CVE-2026-16730

Package:
src:dbus-broker
Source:
src:dbus-broker
Submitter:
Salvatore Bonaccorso
Date:
2026-07-26 20:21:02 UTC
Severity:
normal
Tags:
#1142850#5
Date:
2026-07-26 20:19:07 UTC
From:
To:
Hi,

The following vulnerability was published for dbus-broker.

CVE-2026-16730[0]:
| 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.


If you fix the vulnerability please also make sure to include the
CVE (Common Vulnerabilities & Exposures) id in your changelog entry.

For further information see:

[0] https://security-tracker.debian.org/tracker/CVE-2026-16730
https://www.cve.org/CVERecord?id=CVE-2026-16730
[1] https://github.com/bus1/dbus-broker/issues/435

Please adjust the affected versions in the BTS as needed.

Regards,
Salvatore