325581 – (CVE-2008-7256) Kernel: overcomit NULL pointer dereference (CVE-2008-7256)

Bug 325581 (CVE-2008-7256) - Kernel: overcomit NULL pointer dereference (CVE-2008-7256)

Summary: Kernel: overcomit NULL pointer dereference (CVE-2008-7256)

Status:	RESOLVED FIXED

Alias:	CVE-2008-7256

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

Importance:	High normal (vote)
Assignee:	Gentoo Security

URL:	https://bugzilla.redhat.com/show_bug....
Whiteboard:	[ linux < 2.6.28-rc8 ]
Keywords:

Depends on:
Blocks:

Reported:	2010-06-25 20:18 UTC by Stefan Behte (RETIRED)
Modified:	2013-09-15 19:36 UTC (History)
CC List:	2 users (show)

See Also:
Package list:
Runtime testing required:	---

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Description Stefan Behte (RETIRED) gentoo-dev

2010-06-25 20:18:02 UTC

CVE-2008-7256 (http://nvd.nist.gov/nvd.cfm?cvename=CVE-2008-7256):
  mm/shmem.c in the Linux kernel before 2.6.28-rc8, when strict
  overcommit is enabled and CONFIG_SECURITY is disabled, does not
  properly handle the export of shmemfs objects by knfsd, which allows
  attackers to cause a denial of service (NULL pointer dereference and
  knfsd crash) or possibly have unspecified other impact via unknown
  vectors.  NOTE: this vulnerability exists because of an incomplete
  fix for CVE-2010-1643.