VULNERABILITY INTELLIGENCE
CVE-2026-16730
CVSS score5.5 MEDIUM
EPSS probability0.15%
CISA KEVNot currently listed
Published2026-07-24
Last modified2026-09-10
CVSS vectorCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Description
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.
Weakness classification
- secalert@redhat.com: CWE-755