VUPEN Security - Linux Kernel VFS Lookup Local Denial of Service Vulnerability / Exploit (Security Advisories)

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>> Linux Kernel VFS Lookup Local Denial of Service Vulnerability

Title : Linux Kernel VFS Lookup Local Denial of Service Vulnerability
Advisory ID : VUPEN/ADV-2008-2430
CVE ID : CVE-2008-3275
CWE ID : CWE-399
Rated as : Low Risk

Remotely Exploitable : No
Locally Exploitable : Yes
Release Date : 2008-08-25

Advisory Details

Description

Affected Products

Solution

References

Technical Description

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A vulnerability has been identified in Linux Kernel, which could be exploited by local attackers to cause a denial of service. This issue is caused by errors in the "real_lookup()" and "__lookup_hash()" [fs/namei.c] functions that do not prevent creation of a child dentry for a deleted (S_DEAD) directory, which could cause the UBIFS orphan area to overflow, leading to a denial of service.

Credits

Vulnerability reported by Zoltan Sogor.

ChangeLog

2008-08-25 : Initial release
2008-10-20 : Updated Solution

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