Description
The _dbus_header_byteswap function in dbus-marshal-header.c in D-Bus (aka DBus) 1.2.x before 1.2.28, 1.4.x before 1.4.12, and 1.5.x before 1.5.4 does not properly handle a non-native byte order, which allows local users to cause a denial of service (connection loss), obtain potentially sensitive information, or conduct unspecified state-modification attacks via crafted messages.
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 | 1.4.12-1 | — |
| Debian 13 | dbus | 1.4.12-1 | — |
| Debian 12 | dbus | 1.4.12-1 | — |
Red Hat
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| RHEL 6 | dbus +4 | 1:1.2.24-5.el6_1 | RHSA-2011:1132 |
| RHEL 5 | dbus +3 | 1.1.2-16.el5_7 | RHSA-2011:1132 |
Advisories 1
- RHSA-2011:1132 Red Hat Security Advisory: dbus security update Red Hat Security Advisories (RHSA) · Jun 26, 2026
References
- [oss-security] 20110613 Re: CVE Request -- dbus -- Local DoS via messages with non-native byte order mailing-list
- http://cgit.freedesktop.org/dbus/dbus/commit/?h=dbus-1.2&id=6519a1f77c61d753d4c97efd6e15630eb275336e
- http://cgit.freedesktop.org/dbus/dbus/tree/NEWS?h=dbus-1.4
- [dbus] 20110530 D-Bus daemon big and little endian issue mailing-list
- RHSA-2011:1132 vendor-advisory
- dbus-nonnative-dos(67974) vdb-entry
- https://bugs.freedesktop.org/show_bug.cgi?id=38120
- http://cgit.freedesktop.org/dbus/dbus/tree/NEWS?h=dbus-1.2
- 44896 third-party-advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=712676
- [oss-security] 20110612 CVE Request -- dbus -- Local DoS via messages with non-native byte order mailing-list
- http://cgit.freedesktop.org/dbus/dbus/commit/?h=dbus-1.4&id=c3223ba6c401ba81df1305851312a47c485e6cd7
- [oss-security] 20110612 Bug#629938: Info received (CVE Request -- dbus -- Local DoS via messages with non-native byte order) mailing-list
- http://kb.juniper.net/InfoCenter/index?page=content&id=JSA10705
- http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=629938
- [dbus] 20070317 D-Bus daemon endianness issue mailing-list