CVE-2014-4171: Canonical Ubuntu Linux
Medium severity, CVSS 4.7. EPSS: 0.4% chance of exploitation in the next 30 days.
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.
Affected products
Published 2014-06-23. Last modified 2026-06-17.