Bug 126126 - CAN-2004-0565 Information leak on Linux/ia64
Summary: CAN-2004-0565 Information leak on Linux/ia64
Alias: None
Product: Red Hat Enterprise Linux 3
Classification: Red Hat
Component: kernel
Version: 3.0
Hardware: All
OS: Linux
Target Milestone: ---
Assignee: Jason Baron
QA Contact: Brian Brock
Depends On:
TreeView+ depends on / blocked
Reported: 2004-06-16 12:40 UTC by Mark J. Cox
Modified: 2013-03-06 05:57 UTC (History)
4 users (show)

Fixed In Version:
Doc Type: Bug Fix
Doc Text:
Clone Of:
Last Closed: 2004-12-23 20:48:00 UTC

Attachments (Terms of Use)

System ID Priority Status Summary Last Updated
Red Hat Product Errata RHSA-2004:689 normal SHIPPED_LIVE Important: kernel security update 2004-12-23 05:00:00 UTC

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.


Note You need to log in before you can comment on or make changes to this bug.