Vulnerability Details : CVE-2006-5173

Linux kernel does not properly save or restore EFLAGS during a context switch, or reset the flags when creating new threads, which allows local users to cause a denial of service (process crash), as demonstrated using a process that sets the Alignment Check flag (EFLAGS 0x40000), which triggers a SIGBUS in other processes that have an unaligned access.
Publish Date : 2006-10-17 Last Update Date : 2020-08-19

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- CVSS Scores & Vulnerability Types

CVSS Score	2.1
Confidentiality Impact	None (There is no impact to the confidentiality of the system.)
Integrity Impact	None (There is no impact to the integrity of the system)
Availability Impact	Partial (There is reduced performance or interruptions in resource availability.)
Access Complexity	Low (Specialized access conditions or extenuating circumstances do not exist. Very little knowledge or skill is required to exploit. )
Authentication	Not required (Authentication is not required to exploit the vulnerability.)
Gained Access	None
Vulnerability Type(s)	Denial Of Service
CWE ID	CWE id is not defined for this vulnerability

- Vendor Statements

Not Vulnerable. This flaw only affects kernel versions 2.6.14 to 2.6.18. Red Hat Enterprise Linux 2.1, 3, and 4 does not ship with a vulnerable kernel version.
Source: Redhat

- Related OVAL Definitions

Title	Definition Id	Class	Family
CVE-2006-5173	oval:org.opensuse.security:def:20065173		unix

OVAL (Open Vulnerability and Assessment Language) definitions define exactly what should be done to verify a vulnerability or a missing patch. Check out the OVAL definitions if you want to learn what you should do to verify a vulnerability.

- Products Affected By CVE-2006-5173

#	Product Type	Vendor	Product	Version	Update	Edition	Language
1	OS	Canonical	Ubuntu Linux	5.10	*	*	*	Version Details Vulnerabilities
2	OS	Canonical	Ubuntu Linux	6.06	*	*	*	Version Details Vulnerabilities
3	OS	Canonical	Ubuntu Linux	6.10	*	*	*	Version Details Vulnerabilities
4	OS	Linux	Linux Kernel	*	*	*	*	Version Details Vulnerabilities

- Number Of Affected Versions By Product

Vendor	Product	Vulnerable Versions
Canonical	Ubuntu Linux	3
Linux	Linux Kernel	1

- References For CVE-2006-5173

http://secunia.com/advisories/23593
SECUNIA 23593

http://www.mandriva.com/security/advisories?name=MDKSA-2007:002
MANDRIVA MDKSA-2007:002

http://www.novell.com/linux/security/advisories/2006_79_kernel.html
SUSE SUSE-SA:2006:079

http://secunia.com/advisories/23384
SECUNIA 23384

http://kernel.org/git/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=47a5c6fa0e204a2b63309c648bb2fde36836c826 CONFIRM

http://www.ubuntu.com/usn/usn-395-1
UBUNTU USN-395-1

http://secunia.com/advisories/23361
SECUNIA 23361

http://www.securityfocus.com/archive/1/471457
BUGTRAQ 20070615 rPSA-2007-0124-1 kernel xen

http://secunia.com/advisories/25691
SECUNIA 25691

http://secunia.com/advisories/23474
SECUNIA 23474

http://www.securityfocus.com/bid/21851
BID 21851 Linux Kernel EFLAGS Local Denial of Service Vulnerability Release Date:2007-01-26

- Metasploit Modules Related To CVE-2006-5173

There are not any metasploit modules related to this CVE entry (Please visit www.metasploit.com for more information)