Bug 126126

Summary: CAN-2004-0565 Information leak on Linux/ia64
Product: Red Hat Enterprise Linux 3 Reporter: Mark J. Cox <mjc>
Component: kernelAssignee: Jason Baron <jbaron>
Status: CLOSED ERRATA QA Contact: Brian Brock <bbrock>
Severity: medium Docs Contact:
Priority: medium    
Version: 3.0CC: knoel, peterm, petrides, riel
Target Milestone: ---Keywords: Security
Target Release: ---   
Hardware: All   
OS: Linux   
Fixed In Version: Doc Type: Bug Fix
Doc Text:
Story Points: ---
Clone Of: Environment:
Last Closed: 2004-12-23 20:48:00 UTC Type: ---
Regression: --- Mount Type: ---
Documentation: --- CRM:
Verified Versions: Category: ---
oVirt Team: --- RHEL 7.3 requirements from Atomic Host:
Cloudforms Team: ---

Description Mark J. Cox 2004-06-16 12:40:40 UTC
Linux ia64 kernels have a floating point leak because the context
switch code checks just the psr.mfh bit and doesn't look at who the
FPH owner is.  This allows a malicious program to set the MFH bit and
look at the 
registers of another possibly sensitive process.

Patch available and committed:


CAN-2004-0565 Affects: 3AS 3ES 3WS

Comment 1 Josh Bressers 2004-06-18 15:15:49 UTC

*** This bug has been marked as a duplicate of 124734 ***

Comment 2 Ernie Petrides 2004-12-21 01:38:31 UTC
A fix for this problem has just been committed to the RHEL3 E5
patch pool this evening (in kernel version 2.4.21-27.0.1.EL).

Comment 3 Ernie Petrides 2004-12-22 21:58:18 UTC
A fix for this problem has also been committed to the RHEL3 U5
patch pool this evening (in kernel version 2.4.21-27.4.EL).

Comment 4 Josh Bressers 2004-12-23 20:48:00 UTC
An advisory 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.