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Bug 125901

Summary: [PATCH] CAN-2004-0554: FPU exception handling local DoS
Product: Red Hat Enterprise Linux 3 Reporter: Robert Scheck <redhat-bugzilla>
Component: kernelAssignee: Ernie Petrides <petrides>
Status: CLOSED ERRATA QA Contact: Brian Brock <bbrock>
Severity: high Docs Contact:
Priority: medium    
Version: 3.0CC: menscher, petrides, riel
Target Milestone: ---   
Target Release: ---   
Hardware: All   
OS: Linux   
URL: http://reviewed.homelinux.org/news/2004-06-11_kernel_crash/
Whiteboard:
Fixed In Version: Doc Type: Bug Fix
Doc Text:
Story Points: ---
Clone Of: Environment:
Last Closed: 2004-06-18 00:59:37 UTC Type: ---
Regression: --- Mount Type: ---
Documentation: --- CRM:
Verified Versions: Category: ---
oVirt Team: --- RHEL 7.3 requirements from Atomic Host:
Cloudforms Team: --- Target Upstream Version:
Embargoed:
Bug Depends On:    
Bug Blocks: 116727    
Attachments:
Description Flags
linux-2.4.21-fpu.patch none

Description Robert Scheck 2004-06-13 16:53:29 UTC 
Description of problem:
The problem is the same in RHEL3 as bug #125900 in Fedora Core 1.

Version-Release number of selected component (if applicable):
kernel-2.4.21-15.EL

Additional info:
I only tested that crash code at i586, i686 and athlon.
Comment 1 Robert Scheck 2004-06-14 19:16:54 UTC 
Created attachment 101121 [details]
linux-2.4.21-fpu.patch

This patch worked for me at i586, i686 and athlon including x86_64 and some 
SMP systems.
Comment 2 Ernie Petrides 2004-06-14 22:57:51 UTC 
Thanks for the patch.
Comment 3 Robert Scheck 2004-06-15 08:44:27 UTC 
Allocated as CAN-2004-0554
Comment 4 Ernie Petrides 2004-06-15 10:12:53 UTC 
A fix for this problem has just been committed to the RHEL3 U3
patch pool this evening (in kernel version 2.4.21-15.11.EL).

I will update this bug report again as soon as a (pre-U3)
security advisory is available.
Comment 5 Jay Turner 2004-06-18 00:59:37 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