Bug 140711 - CAN-2004-1068 Missing serialisation in unix_dgram_recvmsg
Summary: CAN-2004-1068 Missing serialisation in unix_dgram_recvmsg
Keywords:
Status: CLOSED ERRATA
Alias: None
Product: Red Hat Enterprise Linux 2.1
Classification: Red Hat
Component: kernel
Version: 2.1
Hardware: i386
OS: Linux
medium
high
Target Milestone: ---
Assignee: Jim Paradis
QA Contact: Brian Brock
URL:
Whiteboard: impact=important,public=20041119
Depends On:
Blocks:
TreeView+ depends on / blocked
 
Reported: 2004-11-24 13:09 UTC by Mark J. Cox
Modified: 2013-08-06 01:10 UTC (History)
2 users (show)

Fixed In Version:
Doc Type: Bug Fix
Doc Text:
Clone Of:
Environment:
Last Closed: 2004-12-13 20:06:37 UTC
Target Upstream Version:
Embargoed:


Attachments (Terms of Use)


Links
System ID Private Priority Status Summary Last Updated
Red Hat Product Errata RHSA-2004:505 0 normal SHIPPED_LIVE Important: Updated kernel packages fix security vulnerability 2004-12-13 05:00:00 UTC

Description Mark J. Cox 2004-11-24 13:09:38 UTC
According to isec.pl on Nov19:
        "There is a subtle race condition finally permitting a
        non-root user to increment (up to 256 times) any arbitrary
        location(s) in kernel space.  The condition is not easy to
        exploit since an attacker must trick kmalloc() to sleep on
        allocation of a special chunk of memory and then convince the
        scheduler to execute another thread. But it is feasible."

http://linux.bkbits.net:8080/linux-2.4/cset@4199284dnTPrPLR-yhP_rOBHXJlltA
Therefore fixed in 2.4.28
http://linux.bkbits.net:8080/linux-2.6/cset@419927f5Wy2IOKwcqE2S3DTNYSmCqQ
Therefore will be fixed in 2.6.10

CVE name applied for

Comment 2 John Flanagan 2004-12-13 20:06:38 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-2004-505.html



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