313327 – (CVE-2007-6733) Kernel: nfs_lock() POSIX lock privilege escalation (CVE-2007-6733)

Bug 313327 (CVE-2007-6733) - Kernel: nfs_lock() POSIX lock privilege escalation (CVE-2007-6733)

Summary: Kernel: nfs_lock() POSIX lock privilege escalation (CVE-2007-6733)

Status:	RESOLVED FIXED

Alias:	CVE-2007-6733

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 <= 2.6.9 ]
Keywords:

Depends on:
Blocks:

Reported:	2010-04-06 03:04 UTC by Stefan Behte (RETIRED)
Modified:	2013-09-15 19:34 UTC (History)
CC List:	2 users (show)

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

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Description Stefan Behte (RETIRED) gentoo-dev

2010-04-06 03:04:45 UTC

CVE-2007-6733 (http://nvd.nist.gov/nvd.cfm?cvename=CVE-2007-6733):
  The nfs_lock function in fs/nfs/file.c in the Linux kernel 2.6.9 does
  not properly remove POSIX locks on files that are setgid without
  group-execute permission, which allows local users to cause a denial
  of service (BUG and system crash) by locking a file on an NFS
  filesystem and then changing this file's permissions, a related issue
  to CVE-2010-0727.