Description
The dbus-daemon in D-Bus before 1.6.24 and 1.8.x before 1.8.8 does not properly close old connections, which allows local users to cause a denial of service (incomplete connection consumption and prevention of new connections) via a large number of incomplete connections.
Fixed in Linux distributions
Distributions backport fixes, so the version that fixes this vulnerability differs per release — upgrade to at least the version shown. From the distributions' security trackers and advisories.
Debian
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Debian 14 | dbus | 1.8.8-1 | — |
| Debian 13 | dbus | 1.8.8-1 | — |
| Debian 12 | dbus | 1.8.8-1 | — |
| Debian 7 | dbus | 1.6.8-1+deb7u4 | DSA-3026-1 |
| Debian 6.0 | dbus | 1.2.24-4+squeeze3 | DLA-87-1 |
Ubuntu
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 14.04 LTS | dbus | 1.6.18-0ubuntu4.2 | USN-2352-1 |
openSUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| openSUSE Tumbleweed | dbus-1 | 1.10.12-2.1 | openSUSE-SU-2024:10517-1 |
Advisories 4
- USN-2352-1 dbus vulnerabilities Ubuntu Security Notices (USN) · Apr 22, 2026
- DLA-87-1 dbus - security update Debian Security (DSA / DLA) · Mar 9, 2026
- DSA-3026-1 dbus - security update Debian Security (DSA / DLA) · Mar 9, 2026
- openSUSE-SU-2024:10517-1 dbus-1-1.10.12-2.1 on GA media SUSE / openSUSE Security Updates · Feb 4, 2026
References
- USN-2352-1 vendor-advisory
- openSUSE-SU-2014:1239 vendor-advisory
- SUSE-SU-2014:1146 vendor-advisory
- 61378 third-party-advisory
- [oss-security] 20140916 CVE-2014-3635 to 3639: security issues in D-Bus < 1.8.8 mailing-list
- 1030864 vdb-entry
- https://bugs.freedesktop.org/show_bug.cgi?id=80919
- 61431 third-party-advisory
- http://advisories.mageia.org/MGASA-2014-0395.html
- DSA-3026 vendor-advisory
- MDVSA-2015:176 vendor-advisory