Red Hat Bugzilla – Bug 126126
CAN-2004-0565 Information leak on Linux/ia64
Last modified: 2013-03-06 00:57:07 EST
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
*** This bug has been marked as a duplicate of 124734 ***
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).
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).
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.