Opened by  (Arun Sharma) on 2004-05-28 17:46

Description of problem:

Linux 2.4.x and the SLES9/ia64 kernels have a floating point leak.
This is 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.

Version-Release number of selected component (if applicable):

2.4.21-12.EL.

How reproducible:

Run N (= number of cpus) copies of the program secret and one copy of
the program check.