CVE-2014-4171

2014-06-23T11:21:00
ID CVE-2014-4171
Type cve
Reporter cve@mitre.org
Modified 2018-12-18T14:38:00

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.