516146 – (CVE-2014-4171) Kernel: mm/shmem: denial of service (CVE-2014-4171)

Bug 516146 (CVE-2014-4171) - Kernel: mm/shmem: denial of service (CVE-2014-4171)

Summary: Kernel: mm/shmem: denial of service (CVE-2014-4171)

Status:	RESOLVED FIXED

Alias:	CVE-2014-4171

Product:	Gentoo Security
Classification:	Unclassified
Component:	Kernel (show other bugs)
Hardware:	All Linux

Importance:	Normal normal (vote)
Assignee:	Gentoo Kernel Security

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Reported:	2014-07-03 09:27 UTC by Agostino Sarubbo
Modified:	2022-03-25 22:19 UTC (History)
CC List:	1 user (show)

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Runtime testing required:	---

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Description Agostino Sarubbo gentoo-dev

2014-07-03 09:27:50 UTC

CVE-2014-4171 (http://nvd.nist.gov/nvd.cfm?cvename=CVE-2014-4171):
  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.

Comment 1 GLSAMaker/CVETool Bot gentoo-dev

2014-08-10 21:51:33 UTC

CVE-2014-4171 (http://nvd.nist.gov/nvd.cfm?cvename=CVE-2014-4171):
  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.

Comment 2 John Helmert III archtester

2022-03-25 22:19:38 UTC

Fix in 3.16