D-Bus 1.8.6 Security Fix

[William Harrington]

​http://thread.gmane.org/gmane.comp.freedesktop.dbus/15832

D-Bus 1.8.6 includes two security fixes which I think are critical for our current systemd build. I'd like to add this before release.

Security fixes:

• On Linux ≥ 2.6.37-rc4, if sendmsg() fails with ETOOMANYREFS, silently drop the message. This prevents an attack in which a malicious client can make dbus-daemon disconnect a system service, which is a local denial of service. (fd.o #80163, CVE-2014-3532; Alban Crequy)

• Track remaining Unix file descriptors correctly when more than one message in quick succession contains fds. This prevents another attack in which a malicious client can make dbus-daemon disconnect a system service. (fd.o #79694, fd.o #80469, CVE-2014-3533; Alejandro Martínez Suárez, Simon McVittie, Alban Crequy)

Other fixes:

• When dbus-launch --exit-with-session starts a dbus-daemon but then cannot attach to a session, kill the dbus-daemon as intended (fd.o #74698, Роман Донченко)

[chris@…]

Fixed in ​http://trac.cross-lfs.org/changeset/8d5df0bef47db128d44d940d3e3645155748bce4.