Bug 513038 (CVE-2014-3940)

Summary:	Kernel: missing check during hugepage migration (CVE-2014-3940)
Product:	Gentoo Security	Reporter:	Agostino Sarubbo <ago>
Component:	Kernel	Assignee:	Gentoo Kernel Security <security-kernel>
Status:	RESOLVED FIXED
Severity:	normal	CC:	kernel
Priority:	Normal
Version:	unspecified
Hardware:	All
OS:	Linux
Whiteboard:
Package list:		Runtime testing required:	---

Description Agostino Sarubbo gentoo-dev

2014-06-12 10:38:36 UTC

CVE-2014-3940 (http://nvd.nist.gov/nvd.cfm?cvename=CVE-2014-3940):
  The Linux kernel through 3.14.5 does not properly consider the presence 
  of hugetlb entries, which allows local users to cause a denial of service 
  (memory corruption or system crash) by accessing certain memory locations, 
  as demonstrated by triggering a race condition via numa_maps read operations 
  during hugepage migration, related to fs/proc/task_mmu.c and mm/mempolicy.c.

Comment 1 GLSAMaker/CVETool Bot gentoo-dev

2014-08-10 21:52:03 UTC

CVE-2014-3940 (http://nvd.nist.gov/nvd.cfm?cvename=CVE-2014-3940):
  The Linux kernel through 3.14.5 does not properly consider the presence of
  hugetlb entries, which allows local users to cause a denial of service
  (memory corruption or system crash) by accessing certain memory locations,
  as demonstrated by triggering a race condition via numa_maps read operations
  during hugepage migration, related to fs/proc/task_mmu.c and mm/mempolicy.c.

Comment 2 John Helmert III archtester

2021-10-25 00:03:16 UTC

Patch is in mainline 3.15 onwards