CVE ID:	CVE-2014-4171
Description:	mm/shmem.c in the Linux kernel through 3.15.1 does not properly implement the interaction between range notification and hole punching, which allows local users to cause a denial of service (i_mutex hold) by using the mmap system call to access a hole, as demonstrated by interfering with intended shmem activity by blocking completion of (1) an MADV_REMOVE madvise call or (2) an FALLOC_FL_PUNCH_HOLE fallocate call.
Test IDs:	None available
Cross References:	Common Vulnerability Exposure (CVE) ID: CVE-2014-4171 BugTraq ID: 68157 http://www.securityfocus.com/bid/68157 http://marc.info/?l=linux-mm-commits&m=140303745420549&w=2 http://www.openwall.com/lists/oss-security/2014/06/18/11 RedHat Security Advisories: RHSA-2014:1318 http://rhn.redhat.com/errata/RHSA-2014-1318.html RedHat Security Advisories: RHSA-2015:0102 http://rhn.redhat.com/errata/RHSA-2015-0102.html http://www.securitytracker.com/id/1030450 http://secunia.com/advisories/59777 http://secunia.com/advisories/60564 SuSE Security Announcement: SUSE-SU-2014:1316 (Google Search) http://lists.opensuse.org/opensuse-security-announce/2014-10/msg00006.html SuSE Security Announcement: SUSE-SU-2014:1319 (Google Search) http://lists.opensuse.org/opensuse-security-announce/2014-10/msg00007.html http://www.ubuntu.com/usn/USN-2334-1 http://www.ubuntu.com/usn/USN-2335-1