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Bug 513038 (CVE-2014-3940) - Kernel: missing check during hugepage migration (CVE-2014-3940)
Summary: Kernel: missing check during hugepage migration (CVE-2014-3940)
Status: RESOLVED FIXED
Alias: CVE-2014-3940
Product: Gentoo Security
Classification: Unclassified
Component: Kernel (show other bugs)
Hardware: All Linux
: Normal normal (vote)
Assignee: Gentoo Kernel Security
URL:
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Blocks:
 
Reported: 2014-06-12 10:38 UTC by Agostino Sarubbo
Modified: 2021-10-25 00:03 UTC (History)
1 user (show)

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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 Gentoo Infrastructure gentoo-dev Security 2021-10-25 00:03:16 UTC 
Patch is in mainline 3.15 onwards