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Bug 270333 - Kernel: nfs: Fix NFS v4 client handling of MAY_EXEC in nfs_permission. (CVE-2009-1630)
Summary: Kernel: nfs: Fix NFS v4 client handling of MAY_EXEC in nfs_permission. (CVE-2...
Status: RESOLVED FIXED
Alias: None
Product: Gentoo Security
Classification: Unclassified
Component: Kernel (show other bugs)
Hardware: All Linux
: High normal (vote)
Assignee: Gentoo Security
URL: http://git.kernel.org/?p=linux/kernel...
Whiteboard: [linux <2.6.27.25] [linux >=2.6.28 <2...
Keywords:
Depends on:
Blocks:
 
Reported: 2009-05-18 17:50 UTC by Robert Buchholz (RETIRED)
Modified: 2013-09-15 20:06 UTC (History)
2 users (show)

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Package list:
Runtime testing required: ---

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Description Robert Buchholz (RETIRED) gentoo-dev 2009-05-18 17:50:28 UTC 
CVE-2009-1630 (http://nvd.nist.gov/nvd.cfm?cvename=CVE-2009-1630):
  The nfs_permission function in fs/nfs/dir.c in the NFS client
  implementation in the Linux kernel 2.6.29.3 and earlier, when
  atomic_open is available, does not check execute (aka EXEC or
  MAY_EXEC) permission bits, which allows local users to bypass
  permissions and execute files, as demonstrated by files on an NFSv4
  fileserver.
Comment 1 Robert Buchholz (RETIRED) gentoo-dev 2009-05-18 17:51:02 UTC 
No idea why this is not yet upstream.
Comment 2 Toralf Förster gentoo-dev 2009-05-19 07:57:32 UTC 
http://lkml.org/lkml/2009/5/18/436