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Linux Kernel Ext3 Invalid Inode Number Denial of Service
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Secunia Advisory:
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SA21369
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Release Date:
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2006-08-07
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Last Update:
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2006-11-17
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Popularity:
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10,632 views
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Critical:
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Less critical
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Impact:
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DoS
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Where:
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From local network
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Solution Status:
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Vendor Workaround
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| OS: | Linux Kernel 2.6.x
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| CVE reference: | CVE-2006-3468
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Description:
James McKenzie has reported a vulnerability in Linux Kernel, which can be exploited by malicious users to cause a DoS (Denial of Service).
The vulnerability is caused due to an error in ext3 when handling an invalid inode number. This can be exploited by sending a specially crafted NFS request with a V2 procedure (e.g. V2_LOOKUP) that specifies an invalid inode number.
Successful exploitation causes the exported directory to be remounted read-only.
The vulnerability has been reported in versions 2.6.14.4, 2.6.17.6, and 2.6.17.7. Other versions may also be affected.
Solution:
A patch is committed to the GIT repository.
Provided and/or discovered by:
James McKenzie
Changelog:
2006-11-17: Updated "Solution" section.
Original Advisory:
http://lkml.org/lkml/2006/7/17/41
http://git.parisc-linux.org/?p=linux-...b48ebb4de139eef4fcefd5f2bb823cb0d81b9
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About this Secunia Advisory
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Please note: The information that this Secunia Advisory is based on comes from a third party unless stated otherwise.
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