CVE-2006-5755

kernel: local denial of service due to NT bit leakage

Severity Score

4.9

*CVSS v2

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

*Multiple Sources

Exploited in Wild

*KEV

Decision

*SSVC

Descriptions

Linux kernel before 2.6.18, when running on x86_64 systems, does not properly save or restore EFLAGS during a context switch, which allows local users to cause a denial of service (crash) by causing SYSENTER to set an NT flag, which can trigger a crash on the IRET of the next task.

El núcleo de Linux anterior a 2.6.18, cuando se ejecuta en sistemas x86_64, no guarda o restaura adecuadamente las EFLAGS durante un cambio de contexto, lo cual permite a usuarios locales provocar una denegación de servicio (caída) provocando que SYSENTER active una bandera NT, lo que dispara una caída en el IRET de la siguiente tarea.

*Credits: N/A

CVSS Scores

NISTv2 4.9

Attack Vector

Local

Attack Complexity

Low

Authentication

None

Confidentiality

None

Integrity

None

Availability

Complete

* Common Vulnerability Scoring System

SSVC

Decision:-

Exploitation

Automatable

Tech. Impact

* Organization's Worst-case Scenario

Timeline

2006-11-06 CVE Reserved
2006-12-31 CVE Published
2024-06-03 EPSS Updated
2024-08-07 CVE Updated
---------- Exploited in Wild
---------- KEV Due Date
---------- First Exploit

CWE

CAPEC

References (18)

URL	Tag	Source
http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commitdiff%3Bh=658fdbef66e5e9be79b457edc2cbbb3add840aa9	X_refsource_confirm
http://kernel.org/git/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commitdiff%3Bh=658fdbef66e5e9be79b457edc2cbbb3add840aa9	X_refsource_confirm
http://secunia.com/advisories/24098	Third Party Advisory
http://secunia.com/advisories/25691	Third Party Advisory
http://secunia.com/advisories/26620	Third Party Advisory
http://secunia.com/advisories/26994	Third Party Advisory
http://secunia.com/advisories/32485	Third Party Advisory
http://www.kernel.org/pub/linux/kernel/v2.6/ChangeLog-2.6.18	X_refsource_confirm
http://www.kernel.org/pub/linux/kernel/v2.6/snapshots/patch-2.6.18-git13.log	X_refsource_confirm
http://www.securityfocus.com/archive/1/471457	Mailing List
http://www.securityfocus.com/bid/26060	Vdb Entry
https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A9554	Signature

URL	Date	SRC

URL	Date	SRC

URL	Date	SRC
http://www.debian.org/security/2007/dsa-1381	2023-02-13
http://www.mandriva.com/security/advisories?name=MDKSA-2007:171	2023-02-13
http://www.redhat.com/support/errata/RHSA-2008-0957.html	2023-02-13
http://www.ubuntu.com/usn/usn-416-1	2023-02-13
https://access.redhat.com/security/cve/CVE-2006-5755	2008-11-04
https://bugzilla.redhat.com/show_bug.cgi?id=457718	2008-11-04

Affected Vendors, Products, and Versions

Vendor		Product				Version		Other		Status
Vendor	Product	Version	Other	Status	<-- -->	Vendor	Product	Version	Other	Status
Linux Search vendor "Linux"		Linux Kernel Search vendor "Linux" for product "Linux Kernel"				<= 2.6.17 Search vendor "Linux" for product "Linux Kernel" and version " <= 2.6.17"		-		Affected