National Vulnerability Database

National Vulnerability Database

National Vulnerability

CVE-2007-4573 Detail


The IA32 system call emulation functionality in Linux kernel 2.4.x and 2.6.x before, when running on the x86_64 architecture, does not zero extend the eax register after the 32bit entry path to ptrace is used, which might allow local users to gain privileges by triggering an out-of-bounds access to the system call table using the %RAX register.

Source:  MITRE      Last Modified:  09/24/2007

Quick Info

CVE Dictionary Entry:
Original release date:
Last revised:


CVSS Severity (version 2.0):
CVSS v2 Base Score:
7.2 HIGH
(AV:L/AC:L/Au:N/C:C/I:C/A:C) (legend)
Impact Subscore:
Exploitability Subscore:
CVSS Version 2 Metrics:
Access Vector:
Locally exploitable
Access Complexity:
Not required to exploit
Impact Type:
Provides administrator access, Allows complete confidentiality, integrity, and availability violation; Allows unauthorized disclosure of information; Allows disruption of service

Vendor Statements (disclaimer)

Official Statement from Red Hat (09/27/2007)

This issue affected users who were running 64-bit versions of Red Hat Enterprise Linux 3, 4, or 5 on x86_64 architecture. It did not affect users of Red Hat Enterprise Linux 2.1. Updates are available for Red Hat Enterprise Linux 3, 4, and 5 to correct this issue. New kernel packages along with our advisory are available at the URL below as well as via the Red Hat Network.

References to Advisories, Solutions, and Tools

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Hyperlink Resource Type Source Name External Source FEDORA FEDORA-2007-2298 External Source CONFIRM External Source SUSE SUSE-SA:2007:064 Patch External Source MLIST [linux-kernel] 20070921 Linux External Source MLIST [linux-kernel] 20070921 Re: Linux External Source FULLDISC 20070924 COSEINC Linux Advisory #2: IA32 System Call External Source SECTRACK 1018748 External Source DEBIAN DSA-1378 External Source DEBIAN DSA-1381 External Source DEBIAN DSA-1504 External Source CONFIRM External Source MANDRIVA MDKSA-2007:195 External Source MANDRIVA MDKSA-2007:196 External Source MANDRIVA MDVSA-2008:008 External Source MANDRIVA MDVSA-2008:105 External Source SUSE SUSE-SA:2007:053 External Source REDHAT RHSA-2007:0936 External Source REDHAT RHSA-2007:0937 External Source REDHAT RHSA-2007:0938 External Source BUGTRAQ 20070924 COSEINC Linux Advisory #2: IA32 System Call Emulation Vulnerability External Source BUGTRAQ 20070926 Re: COSEINC Linux Advisory #2: IA32 System CallEmulation Vulnerability External Source BID 25774 External Source UBUNTU USN-518-1 External Source VUPEN ADV-2007-3246 External Source CONFIRM External Source OVAL oval:org.mitre.oval:def:9735 External Source FEDORA FEDORA-2007-712

References to Check Content

Check System:

Technical Details

Vulnerability Type (View All)

  • Permissions, Privileges, and Access Control (CWE-264)

Change History 2 change records found - show changes