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Bug 126121

Summary: CAN-2004-0495 Sparse security fixes backported for 2.4 kernel
Product: Red Hat Enterprise Linux 3 Reporter: Mark J. Cox <mjc>
Component: kernelAssignee: Ernie Petrides <petrides>
Status: CLOSED ERRATA QA Contact: Brian Brock <bbrock>
Severity: medium Docs Contact:
Priority: medium    
Version: 3.0CC: khake, petrides, riel
Target Milestone: ---Keywords: Security
Target Release: ---   
Hardware: All   
OS: Linux   
Whiteboard:
Fixed In Version: Doc Type: Bug Fix
Doc Text:
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Clone Of: Environment:
Last Closed: 2004-06-18 00:59:38 UTC Type: ---
Regression: --- Mount Type: ---
Documentation: --- CRM:
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oVirt Team: --- RHEL 7.3 requirements from Atomic Host:
Cloudforms Team: --- Target Upstream Version:
Embargoed:

Description Mark J. Cox 2004-06-16 11:12:37 UTC 
Recently committed to the 2.6 kernel were enhancements from Al Viro
that enabled the Sparse source code checking tool to check for a
certain class kernel bugs. This class of bugs can lead to privilege
escalation vulnerabilities.  Some of these fixes also apply to the 2.4
kernel and have been backported.  Specifically affecting the RHEL kernels:

1. Direct write to a user-supplied address which can lead to privilege
escalation in the decnet, mpu401, and pss drivers.

2. Direct read of a user-supplied address can cause information leak
from kernel memory in the airo, asus_acpi, mpu401, and pss drivers.

3. Deadlock in the msnd driver.Direct write to a user-supplied address
which can lead to privilege escalation in the decnet, mpu401, and pss
drivers.

Direct read of a user-supplied address can cause information leak from
kernel memory in the airo, asus_acpi, mpu401, and pss drivers.

Deadlock in the msnd driver.
Comment 1 Mark J. Cox 2004-06-16 11:12:56 UTC 
Errata in progress.
Comment 2 Mark J. Cox 2004-06-16 12:46:16 UTC 
(Note the decnet, mpu401, pss, and msnd drivers are classed as
unsupported in RHEL3)
Comment 3 Jay Turner 2004-06-18 00:59:38 UTC 
An errata has been issued which should help the problem 
described in this bug report. This report is therefore being 
closed with a resolution of ERRATA. For more information
on the solution and/or where to find the updated files, 
please follow the link below. You may reopen this bug report 
if the solution does not work for you.

http://rhn.redhat.com/errata/RHSA-2004-255.html