受影响系统：
Linux kernel 2.6.6
Linux kernel 2.6.5
- SuSE Linux 9.1
描述：
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BUGTRAQ ID: 10662
CVE(CAN) ID: CAN-2004-0497

Linux是一款开放源代码操作系统。

Linux Kernel存在一个缺陷，本地或远程攻击者可以利用这个漏洞不正确更改任意文件的组属主。

在审核Linux内核过程中，SUSE发现一个缺陷允许用户未授权更改文件组ID，在Red Hat Enterprise
Linux包含2.4版内核，只有通过Kernel nfs服务器上才能触发此问题，在系统上的用户可以从有此漏洞的机器上挂接远程文件系统，并能未授权更改导出文件的组ID。

<*来源：Michael Schroeder
Ruediger Oertel

链接：http://rhn.redhat.com/errata/RHSA-2004-360.html
http://www.securityfocus.com/advisories/6911
*>

建议：
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厂商补丁：

RedHat
------
RedHat已经为此发布了一个安全公告（RHSA-2004:360-05）以及相应补丁:
RHSA-2004:360-05：Updated kernel packages fix security vulnerabilities
链接：http://rhn.redhat.com/errata/RHSA-2004-360.html

补丁下载：

Linux kernel 2.6.6:

RedHat Upgrade kernel-2.6.6-1.435.2.3.x86_64.rpm
http://download.fedora.redhat.com/pub/fedora/linux/core/updates/2/
RedHat Fedora Core 2

RedHat Upgrade kernel-smp-2.6.6-1.435.2.3.x86_64.rpm
http://download.fedora.redhat.com/pub/fedora/linux/core/updates/2/
RedHat Fedora Core 2

RedHat Upgrade kernel-debuginfo-2.6.6-1.435.2.3.x86_64.rpm
http://download.fedora.redhat.com/pub/fedora/linux/core/updates/2/
RedHat Fedora Core 2

RedHat Upgrade kernel-sourcecode-2.6.6-1.435.2.3.noarch.rpm
http://download.fedora.redhat.com/pub/fedora/linux/core/updates/2/
RedHat Fedora Core 2

RedHat Upgrade kernel-doc-2.6.6-1.435.2.3.noarch.rpm
http://download.fedora.redhat.com/pub/fedora/linux/core/updates/2/
RedHat Fedora Core 2

RedHat Upgrade kernel-2.6.6-1.435.2.3.i586.rpm
http://download.fedora.redhat.com/pub/fedora/linux/core/updates/2/
RedHat Fedora Core 2

RedHat Upgrade kernel-smp-2.6.6-1.435.2.3.i586.rpm
http://download.fedora.redhat.com/pub/fedora/linux/core/updates/2/
RedHat Fedora Core 2

RedHat Upgrade kernel-debuginfo-2.6.6-1.435.2.3.i586.rpm
http://download.fedora.redhat.com/pub/fedora/linux/core/updates/2/
RedHat Fedora Core 2

RedHat Upgrade kernel-2.6.6-1.435.2.3.i686.rpm
http://download.fedora.redhat.com/pub/fedora/linux/core/updates/2/
RedHat Fedora Core 2

RedHat Upgrade kernel-smp-2.6.6-1.435.2.3.i686.rpm
http://download.fedora.redhat.com/pub/fedora/linux/core/updates/2/
RedHat Fedora Core 2

RedHat Upgrade kernel-debuginfo-2.6.6-1.435.2.3.i686.rpm
http://download.fedora.redhat.com/pub/fedora/linux/core/updates/2/
RedHat Fedora Core 2

RedHat Upgrade kernel-sourcecode-2.6.6-1.435.2.3.noarch.rpm
http://download.fedora.redhat.com/pub/fedora/linux/core/updates/2/
RedHat Fedora Core 2

RedHat Upgrade kernel-doc-2.6.6-1.435.2.3.noarch.rpm
http://download.fedora.redhat.com/pub/fedora/linux/core/updates/2/
RedHat Fedora Core 2

RedHat Fedora Core1:

RedHat Upgrade kernel-2.4.22-1.2197.nptl.x86_64.rpm
http://download.fedora.redhat.com/pub/fedora/linux/core/updates/1/
RedHat Fedora Core 1

RedHat Upgrade kernel-smp-2.4.22-1.2197.nptl.x86_64.rpm
http://download.fedora.redhat.com/pub/fedora/linux/core/updates/1/
RedHat Fedora Core 1

RedHat Upgrade kernel-debuginfo-2.4.22-1.2197.nptl.x86_64.rpm
http://download.fedora.redhat.com/pub/fedora/linux/core/updates/1/
RedHat Fedora Core 1

RedHat Upgrade kernel-BOOT-2.4.22-1.2197.nptl.i386.rpm
http://download.fedora.redhat.com/pub/fedora/linux/core/updates/1/
RedHat Fedora Core 1

RedHat Upgrade kernel-debuginfo-2.4.22-1.2197.nptl.i386.rpm
http://download.fedora.redhat.com/pub/fedora/linux/core/updates/1/
RedHat Fedora Core 1

RedHat Upgrade kernel-2.4.22-1.2197.nptl.i586.rpm
http://download.fedora.redhat.com/pub/fedora/linux/core/updates/1/
RedHat Fedora Core 1

RedHat Upgrade kernel-smp-2.4.22-1.2197.nptl.i586.rpm
http://download.fedora.redhat.com/pub/fedora/linux/core/updates/1/
RedHat Fedora Core 1

RedHat Upgrade kernel-debuginfo-2.4.22-1.2197.nptl.i586.rpm
http://download.fedora.redhat.com/pub/fedora/linux/core/updates/1/
RedHat Fedora Core 1

RedHat Upgrade kernel-2.4.22-1.2197.nptl.i686.rpm
http://download.fedora.redhat.com/pub/fedora/linux/core/updates/1/
RedHat Fedora Core 1

RedHat Upgrade kernel-smp-2.4.22-1.2197.nptl.i686.rpm
http://download.fedora.redhat.com/pub/fedora/linux/core/updates/1/
RedHat Fedora Core 1

RedHat Upgrade kernel-2.4.22-1.2197.nptl.athlon.rpm
http://download.fedora.redhat.com/pub/fedora/linux/core/updates/1/
RedHat Fedora Core 1

RedHat Upgrade kernel-smp-2.4.22-1.2197.nptl.athlon.rpm
http://download.fedora.redhat.com/pub/fedora/linux/core/updates/1/
RedHat Fedora Core 1

RedHat Upgrade kernel-debuginfo-2.4.22-1.2197.nptl.athlon.rpm
http://download.fedora.redhat.com/pub/fedora/linux/core/updates/1/
RedHat Fedora Core 1

S.u.S.E.
--------
S.u.S.E.已经为此发布了一个安全公告（SUSE-SA:2004:020）以及相应补丁:
SUSE-SA:2004:020：kernel
链接：http://www.securityfocus.com/advisories/6911

补丁下载：

Linux kernel 2.6.5:

SuSE Upgrade kernel-default-2.6.5-7.95.i586.rpm
ftp://ftp.suse.com/pub/suse/i386/update/9.1/rpm/i586/kernel-default-2.6.5-7.95.i586.rpm
x86 Platform

SuSE Upgrade kernel-smp-2.6.5-7.95.i586.rpm
ftp://ftp.suse.com/pub/suse/i386/update/9.1/rpm/i586/kernel-smp-2.6.5-7.95.i586.rpm
x86 Platform

SuSE Upgrade kernel-bigsmp-2.6.5-7.95.i586.rpm
ftp://ftp.suse.com/pub/suse/i386/update/9.1/rpm/i586/kernel-bigsmp-2.6.5-7.95.i586.rpm
x86 Platform

SuSE Upgrade kernel-bigsmp-2.6.5-7.95.i586.rpm
ftp://ftp.suse.com/pub/suse/i386/update/9.1/rpm/i586/kernel-bigsmp-2.6.5-7.95.i586.rpm
x86 Platform

SuSE Upgrade kernel-source-2.6.5-7.95.i586.rpm
ftp://ftp.suse.com/pub/suse/i386/update/9.1/rpm/i586/kernel-source-2.6.5-7.95.i586.rpm
x86 Platform

SuSE Upgrade kernel-default-2.6.5-7.95.x86_64.rpm
ftp://ftp.suse.com/pub/suse/x86_64/update/9.1/rpm/x86_64/kernel-default-2.6.5-7.95.x86_64.rpm
x86-64 Platform

SuSE Upgrade kernel-smp-2.6.5-7.95.x86_64.rpm
ftp://ftp.suse.com/pub/suse/x86_64/update/9.1/rpm/x86_64/kernel-smp-2.6.5-7.95.x86_64.rpm
x86-64 Platform