CVE-2011-1082

Linux Kernel 2.6.x - fs/eventpoll.c epoll Data Structure File Descriptor Local Denial of Service

Severity Score

5.5

*CVSS v3

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

*Multiple Sources

Exploited in Wild

*KEV

Decision

*SSVC

Descriptions

fs/eventpoll.c in the Linux kernel before 2.6.38 places epoll file descriptors within other epoll data structures without properly checking for (1) closed loops or (2) deep chains, which allows local users to cause a denial of service (deadlock or stack memory consumption) via a crafted application that makes epoll_create and epoll_ctl system calls.

fs/eventpoll.c en el kernel de Linux anterior a v2.6.38 coloca descriptores de fichero epoll dentro de otra estructura de datos epoll sin comprobar correctamente para (1) bucles cerrados (2) profundidad de cadena, lo que permite a usuarios locales provocar una denegación de servicio (bloqueo o agotamiento de la pila de memoria) a través de una aplicación que hace epoll_create y llamadas al sistema epoll_ctl.

*Credits: N/A

Attack Vector

Local

Attack Complexity

Low

Privileges Required

Low

User Interaction

None

Scope

Unchanged

Confidentiality

None

Integrity

None

Availability

High

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

2011-02-24 CVE Reserved
2011-03-02 First Exploit
2011-04-03 CVE Published
2024-01-10 EPSS Updated
2024-08-06 CVE Updated
---------- Exploited in Wild
---------- KEV Due Date

CWE

CWE-400: Uncontrolled Resource Consumption

CAPEC

References (8)

URL	Tag	Source
http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=22bacca48a1755f79b7e0f192ddb9fbb7fc6e64e	X_refsource_confirm
http://www.kernel.org/pub/linux/kernel/v2.6/ChangeLog-2.6.38	Broken Link

URL	Date	SRC
https://www.exploit-db.com/exploits/35404	2011-03-02

URL	Date	SRC
http://openwall.com/lists/oss-security/2011/03/02/1	2023-02-13
http://openwall.com/lists/oss-security/2011/03/02/2	2023-02-13
https://bugzilla.redhat.com/show_bug.cgi?id=681575	2011-06-21
https://lkml.org/lkml/2011/2/5/220	2023-02-13

URL	Date	SRC
https://access.redhat.com/security/cve/CVE-2011-1082	2011-06-21

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"				< 2.6.38 Search vendor "Linux" for product "Linux Kernel" and version " < 2.6.38"		-		Affected