Bug 155978

Summary: CVE-2005-1762 x86_64 sysret exception leads to DoS
Product: Red Hat Enterprise Linux 3 Reporter: Mark J. Cox <mjc>
Component: kernelAssignee: Jim Paradis <jparadis>
Status: CLOSED ERRATA QA Contact: Brian Brock <bbrock>
Severity: high Docs Contact:
Priority: medium    
Version: 3.0CC: peterm, petrides, roland, security-response-team
Target Milestone: ---Keywords: Security
Target Release: ---   
Hardware: x86_64   
OS: Linux   
Whiteboard: impact=important,public=20050517,reported=20050411,source=redhat
Fixed In Version: RHSA-2005-663 Doc Type: Bug Fix
Doc Text:
Story Points: ---
Clone Of: Environment:
Last Closed: 2005-09-28 14:59:59 UTC Type: ---
Regression: --- Mount Type: ---
Documentation: --- CRM:
Verified Versions: Category: ---
oVirt Team: --- RHEL 7.3 requirements from Atomic Host:
Cloudforms Team: ---
Bug Depends On:    
Bug Blocks: 156320    

Comment 1 Ernie Petrides 2005-05-16 21:41:25 UTC
Jim, patches relative to RHEL4 are in comments 3 and 4 of bug 154451.

Comment 8 Mark J. Cox 2005-06-13 09:21:17 UTC
I originally labelled this issue as CAN-2005-0756 however that was in error due
to two similar ptrace check issues.  The following is as reported to vendor-sec:

Fixing rip -> CAN-2005-1762
Fixing fs_base and gs_base -> CAN-2005-0756

[PATCH] x86_64: check if ptrace RIP is canonical
This works around an AMD Erratum.

This is a DoS on 2.4 and 2.6

http://www.kernel.org/git/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commitdiff;h=d1099e8a18960693c04507bdd7b9403db70bfd97


Comment 9 Ernie Petrides 2005-06-15 01:04:59 UTC
A fix for this problem has just been committed to the RHEL3 U6
patch pool this evening (in kernel version 2.4.21-32.8.EL).


Comment 14 Red Hat Bugzilla 2005-09-28 15:00:00 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.

http://rhn.redhat.com/errata/RHSA-2005-663.html