Bug 142964 - CAN-2004-1144 x86-64 privilege escalation
Summary: CAN-2004-1144 x86-64 privilege escalation
Keywords:
Status: CLOSED ERRATA
Alias: None
Product: Red Hat Enterprise Linux 3
Classification: Red Hat
Component: kernel
Version: 3.0
Hardware: All
OS: Linux
medium
high
Target Milestone: ---
Assignee: Jim Paradis
QA Contact: Brian Brock
URL:
Whiteboard: impact=important,embargoed=20041222:12
Depends On:
Blocks:
TreeView+ depends on / blocked
 
Reported: 2004-12-15 14:16 UTC by Josh Bressers
Modified: 2007-11-30 22:07 UTC (History)
4 users (show)

Fixed In Version:
Doc Type: Bug Fix
Doc Text:
Clone Of:
Environment:
Last Closed: 2004-12-23 20:48:02 UTC
Target Upstream Version:
Embargoed:

Attachments (Terms of Use)


Links
System ID Private Priority Status Summary Last Updated
Red Hat Product Errata RHSA-2004:689 0 normal SHIPPED_LIVE Important: kernel security update 2004-12-23 05:00:00 UTC

Description Josh Bressers 2004-12-15 14:16:38 UTC 
Petr Vandrovec found a exploitable root hole in all 2.4 x86-64 kernels
that have 32bit emulation enabled.  The bug does not appear in 2.6
because some rewrites in 2.5 timeframe fixed it as a side effect.

This issue does not affect RHEL2.1
Comment 1 Josh Bressers 2004-12-15 14:17:51 UTC 
Patch for this issue

--- linux-2.4.28/arch/x86_64/ia32/ia32entry.S.orig      2004-08-08
01:26:04.000000000 +0200
+++ linux-2.4.28/arch/x86_64/ia32/ia32entry.S   2004-12-06
21:36:06.000000000 +0100
@@ -52,6 +52,7 @@
 ENTRY(ia32_syscall)
        swapgs
        sti
+       mov %eax,%eax
        pushq %rax
        cld
        SAVE_ARGS
Comment 2 Mark J. Cox 2004-12-16 10:58:00 UTC 
Embargo moved by SUSE to Dec22nd 12GMT
Comment 3 Ernie Petrides 2004-12-20 23:43:34 UTC 
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).
Comment 4 Mark J. Cox 2004-12-22 13:30:27 UTC 
Embargo date and time reached; removing embargo.
Comment 5 Ernie Petrides 2004-12-22 21:57:03 UTC 
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).
Comment 6 Josh Bressers 2004-12-23 20:48:02 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-2004-689.html
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