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A new version (0.9.0.0 - Release Candidate 1) of the free Secunia PSI
has been released. The new version includes many new and advanced
features, which makes it even easier to stay patched.

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Read more about this new version:
https://psi.secunia.com/?page=changelog

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TITLE:
Linux Kernel Directory Truncation Vulnerability

SECUNIA ADVISORY ID:
SA28485

VERIFY ADVISORY:
http://secunia.com/advisories/28485/

CRITICAL:
Less critical

IMPACT:
Security Bypass, Manipulation of data

WHERE:
Local system

OPERATING SYSTEM:
Linux Kernel 2.6.x
http://secunia.com/product/2719/

DESCRIPTION:
A vulnerability has been reported in the Linux Kernel, which can be
exploited by malicious, local users to bypass certain security
restrictions and corrupt a file system.

The vulnerability is caused due to an error when checking the open
flags and access modes when opening a directory. This can be
exploited to truncate directories by calling the "open()" system call
with certain flags.

Successful exploitation requires write privileges for the directory
to be truncated.

The vulnerability is reported in version 2.6.15 up to versions prior
to 2.6.22.16 or 2.6.23.14. Other versions may also be affected.

SOLUTION:
Update to version 2.6.22.16 or 2.6.23.14.

PROVIDED AND/OR DISCOVERED BY:
The vendor credits Bill Roman, Datalight.

ORIGINAL ADVISORY:
http://kernel.org/pub/linux/kernel/v2.6/ChangeLog-2.6.23.14

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About:
This Advisory was delivered by Secunia as a free service to help
everybody keeping their systems up to date against the latest
vulnerabilities.

Subscribe:
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Definitions: (Criticality, Where etc.)
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Please Note:
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Secunia NEVER sends attached files with advisories.
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use those supplied by the vendor.

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