CVEvulnerability

CVE-2014-4171

4.7 MEDIUM Published 2014-06-23 Modified 2026-06-17 Official page ↗
Status
Modified
Published
2014-06-23
Last modified
2026-06-17
Assigner
[email protected]
CVSS 2.0 ([email protected])
4.7 MEDIUM — AV:L/AC:M/Au:N/C:N/I:N/A:C

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.

Affected configurations

• linux linux kernel (<= 3.15.1) • canonical ubuntu linux 12.04

References