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Bug 159918

Summary: CAN-2005-0756 x86_64 crash (ptrace-check-segment)
Product: Red Hat Enterprise Linux 4 Reporter: Mark J. Cox <mjc>
Component: kernelAssignee: Peter Staubach <staubach>
Status: CLOSED ERRATA QA Contact: Brian Brock <bbrock>
Severity: medium Docs Contact:
Priority: medium    
Version: 4.0CC: jbaron, poelstra
Target Milestone: ---Keywords: Security
Target Release: ---   
Hardware: x86_64   
OS: Linux   
Whiteboard: source=vendorsec,public=20050517
Fixed In Version: RHSA-2005-514 Doc Type: Bug Fix
Doc Text:
Story Points: ---
Clone Of: Environment:
Last Closed: 2005-10-05 13:24:25 UTC Type: ---
Regression: --- Mount Type: ---
Documentation: --- CRM:
Verified Versions: Category: ---
oVirt Team: --- RHEL 7.3 requirements from Atomic Host:
Cloudforms Team: --- Target Upstream Version:
Bug Depends On:    
Bug Blocks: 156322    
Attachments:
Description Flags
Proposed patch none

Description Mark J. Cox 2005-06-09 09:35:00 UTC
The following upstream patch fixes canonical checking for segment registers in
ptrace.  This allowed user programs to set a non canonical segment which would
cause oopses in the kernel later.
http://www.kernel.org/git/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commitdiff;h=f6b8d4778c04148729cc0b0dcd335a4411c44276

Comment 3 Mark J. Cox 2005-07-08 08:17:06 UTC
I meant "Not a dupe"

Comment 4 Peter Staubach 2005-07-22 13:28:46 UTC
Created attachment 117053 [details]
Proposed patch

Comment 10 Red Hat Bugzilla 2005-10-05 13:24:25 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.

http://rhn.redhat.com/errata/RHSA-2005-514.html