National Vulnerability Database (NVD) National Vulnerability Database (CVE-2008-4302)

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Last updated: Tue Aug 25 21:45:41 EDT 2009

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Vulnerability Summary for CVE-2008-4302

Original release date:09/29/2008

Last revised:02/21/2009

Source: US-CERT/NIST

Overview

fs/splice.c in the splice subsystem in the Linux kernel before 2.6.22.2 does not properly handle a failure of the add_to_page_cache_lru function, and subsequently attempts to unlock a page that was not locked, which allows local users to cause a denial of service (kernel BUG and system crash), as demonstrated by the fio I/O tool.

Impact

CVSS Severity (version 2.0):

CVSS v2 Base Score:4.9 (MEDIUM) (AV:L/AC:L/Au:N/C:N/I:N/A:C) (legend)

Impact Subscore: 6.9

Exploitability Subscore: 3.9

CVSS Version 2 Metrics:

Access Vector: Locally exploitable

Access Complexity: Low

Authentication: Not required to exploit

Impact Type:Allows disruption of serviceUnknown

Vendor Statments (disclaimer)

Official Statement from Red Hat (01/15/2009): This issue did not affect the versions of Linux kernel as shipped with Red Hat Enterprise Linux 2.1, 3, 4, and Red Hat Enterprise MRG. It was addressed in Red Hat Enterprise Linux 5 via: https://rhn.redhat.com/errata/RHSA-2008-0957.html

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External Source: CONFIRM

Name: https://bugzilla.redhat.com/show_bug.cgi?id=462434

Hyperlink:https://bugzilla.redhat.com/show_bug.cgi?id=462434

External Source: XF

Name: linux-kernel-addtopagecachelru-dos(45191)

Hyperlink:http://xforce.iss.net/xforce/xfdb/45191

External Source: BID

Name: 31201

Hyperlink:http://www.securityfocus.com/bid/31201

External Source: REDHAT

Name: RHSA-2008:0957

Hyperlink:http://www.redhat.com/support/errata/RHSA-2008-0957.html