CVE-2011-4081

kernel: crypto: ghash: null pointer deref if no key is set

Severity Score

5.5

*CVSS v3.1

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

*Multiple Sources

Exploited in Wild

*KEV

Decision

*SSVC

Descriptions

crypto/ghash-generic.c in the Linux kernel before 3.1 allows local users to cause a denial of service (NULL pointer dereference and OOPS) or possibly have unspecified other impact by triggering a failed or missing ghash_setkey function call, followed by a (1) ghash_update function call or (2) ghash_final function call, as demonstrated by a write operation on an AF_ALG socket.

crypto/ghash-generic.c en el kernel de Linux antes de v3.1 permite a usuarios locales causar una denegación de servicio (desreferencia de puntero NULL y OOPS) o posiblemente tener un impacto no especificado mediante la activación de un fallo o ausencia de llamada a la función ghash_setkey, seguido por una (1) llamada a la función ghash_update o (2) llamada a la función ghash_final, como se demuestra por una operación de escritura en un socket AF_ALG.

*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

2011-10-18 CVE Reserved
2011-12-03 CVE Published
2023-03-08 EPSS Updated
2024-08-06 CVE Updated
2024-08-06 First Exploit
---------- Exploited in Wild
---------- KEV Due Date

CWE

CWE-476: NULL Pointer Dereference

CAPEC

References (6)

URL	Tag	Source
http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=7ed47b7d142ec99ad6880bbbec51e9f12b3af74c	X_refsource_confirm

URL	Date	SRC
https://github.com/torvalds/linux/commit/7ed47b7d142ec99ad6880bbbec51e9f12b3af74c	2024-08-06

URL	Date	SRC
http://www.kernel.org/pub/linux/kernel/v3.x/ChangeLog-3.1	2023-02-13
http://www.openwall.com/lists/oss-security/2011/10/27/2	2023-02-13
https://bugzilla.redhat.com/show_bug.cgi?id=749475	2012-03-06

URL	Date	SRC
https://access.redhat.com/security/cve/CVE-2011-4081	2012-03-06

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"				< 3.1 Search vendor "Linux" for product "Linux Kernel" and version " < 3.1"		-		Affected