The update for linux issued as DSA-3426-1 and DSA-3434-1 to address CVE-2015-8543 uncovered a bug in ctdb, a clustered database to store temporary data, leading to broken clusters. Updated packages are now available to address this problem.
For the oldstable distribution (wheezy), this problem has been fixed in version 1.12+git20120201-5.
For the stable distribution (jessie), this problem has been fixed in version 2.5.4+debian0-4+deb8u1.
We recommend that you upgrade your ctdb packages.