National Cyber-Alert System
Vulnerability Summary for CVE-2009-2846
Original release date:08/18/2009
Last revised:09/04/2009
Source:
US-CERT/NIST
Overview
The eisa_eeprom_read function in the parisc isa-eeprom component (drivers/parisc/eisa_eeprom.c) in the Linux kernel before 2.6.31-rc6 allows local users to access restricted memory via a negative ppos argument, which bypasses a check that assumes that ppos is positive and causes an out-of-bounds read in the readb function.
Impact
CVSS Severity (version 2.0):
Impact Subscore:
6.9
Exploitability Subscore:
10.0
CVSS Version 2 Metrics:
Access Vector: Network exploitable
Access Complexity: Low
Authentication: Not required to exploit
Impact Type:Allows unauthorized disclosure of information
Official Statement from Red Hat (08/19/2009)
Not vulnerable. This issue did not affect the versions of Linux kernel as shipped with Red Hat Enterprise Linux 3, 4, 5 or Red Hat Enterprise MRG. Red Hat does not provide support for the Linux kernel on the PA-RISC architecture.
References to Advisories, Solutions, and Tools
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External Source: MLIST
Name: [oss-security] 20090818 Re: CVE request: kernel: parisc: isa-eeprom missing lower bound check
Type: Patch Information
External Source: MLIST
Name: [oss-security] 20090810 CVE request: kernel: parisc: isa-eeprom missing lower bound check
Type: Patch Information
External Source: XF
Name: kernel-eisaeepromread-sec-bypass(52906)
External Source: CONFIRM
Name: http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commitdiff;h=6b4dbcd86a9d464057fcc7abe4d0574093071fcc
