CVE-2006-5173

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Summary

CVECVE-2006-5173
StatePUBLISHED
Assignermitre
Source PriorityCVE Program / NVD first with legacy fallback
Published2006-10-17 22:07:00 UTC
Updated2026-04-23 00:35:47 UTC
DescriptionLinux 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.

Risk And Classification

Primary CVSS: v2.0 2.1 from [email protected]

AV:L/AC:L/Au:N/C:N/I:N/A:P

Problem Types: NVD-CWE-Other | n/a

CVSS v2.0 Breakdown

Access Vector
Local
Access Complexity
Low
Authentication
None
Confidentiality
None
Integrity
None
Availability
Partial

AV:L/AC:L/Au:N/C:N/I:N/A:P

NVD Known Affected Configurations (CPE 2.3)

TypeVendorProductVersionUpdateEditionLanguage
Operating System Canonical Ubuntu Linux 5.10 All All All
Operating System Canonical Ubuntu Linux 6.06 All All All
Operating System Canonical Ubuntu Linux 6.10 All All All
Operating System Linux Linux Kernel All All All All

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA Na N/a affected n/a Not specified

References

ReferenceSourceLinkTags
usn/usn-395-1 - Ubuntu: Linux for human beings af854a3a-2127-422b-91ae-364da2661108 www.ubuntu.com Third Party Advisory
SUSE update for kernel - Advisories - Secunia af854a3a-2127-422b-91ae-364da2661108 secunia.com Broken Link
Advisories - Mandriva Linux af854a3a-2127-422b-91ae-364da2661108 www.mandriva.com Broken Link
Linux Kernel Various Vulnerabilities - Advisories - Secunia af854a3a-2127-422b-91ae-364da2661108 secunia.com Broken Link
kernel/git/torvalds/linux.git - Linux kernel source tree af854a3a-2127-422b-91ae-364da2661108 kernel.org
Linux Kernel EFLAGS Local Denial of Service Vulnerability af854a3a-2127-422b-91ae-364da2661108 www.securityfocus.com Third Party Advisory, VDB Entry
Mandriva update for kernel - Advisories - Secunia af854a3a-2127-422b-91ae-364da2661108 secunia.com Broken Link
Ubuntu update for kernel - Advisories - Secunia af854a3a-2127-422b-91ae-364da2661108 secunia.com Broken Link
SecurityFocus af854a3a-2127-422b-91ae-364da2661108 www.securityfocus.com Third Party Advisory, VDB Entry
rPath update for kernel and xen - Advisories - Secunia af854a3a-2127-422b-91ae-364da2661108 secunia.com Broken Link
Security Announcement af854a3a-2127-422b-91ae-364da2661108 www.novell.com Broken Link
kernel/git/torvalds/linux.git - Linux kernel source tree MITRE kernel.org
CVE Program record CVE.ORG www.cve.org canonical
NVD vulnerability detail NVD nvd.nist.gov canonical, analysis

Vendor Comments And Credit

OrganizationPublishedContributorStatement
Red Hat2006-11-03Joshua BressersNot 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.

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