CVE-2014-4171

 

Published at: - 23-06-2014 01:21

Last modified: - 21-09-2022 08:44

Total changes: - 2

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.

Common Vulnerability Scoring System (CVSS)

AV:L/AC:M/Au:N/C:N/I:N/A:C

 

Verification logic

 

Reference

• https://bugzilla.redhat.com/show_bug.cgi?id=1111180
• http://ozlabs.org/~akpm/mmots/broken-out/shmem-fix-faulting-into-a-hole-while-its-punched.patch
• [oss-security] 20140618 CVE-2014-4171 - Linux kernel mm/shmem.c denial of service-Mailing List, Third Party Advisory
• [mm-commits] 20140617 + shmem-fix-faulting-into-a-hole-while-its-punched.patch added to -mm tree-Mailing List, Third Party Advisory
• 68157-Third Party Advisory, VDB Entry
• 59777-Third Party Advisory
• 60564-Third Party Advisory
• USN-2334-1-Third Party Advisory
• USN-2335-1-Third Party Advisory
• RHSA-2014:1318-Third Party Advisory
• SUSE-SU-2014:1316-Mailing List, Third Party Advisory
• SUSE-SU-2014:1319-Mailing List, Third Party Advisory
• RHSA-2015:0102-Third Party Advisory
• 1030450-Third Party Advisory, VDB Entry

 

Keywords

NVD

 

CVE-2014-4171

 

CVE

 

Common vulnerabilities & exposures

 

CVSS

 

Common vulnerability scoring system

 

Security

 

Vulnerabilities

 

Exposures