CVE-2017-15299

kernel: Incorrect updates of uninstantiated keys crash the kernel

Severity Score

5.5

*CVSS v3

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

*Multiple Sources

Exploited in Wild

*KEV

Decision

*SSVC

Descriptions

The KEYS subsystem in the Linux kernel through 4.13.7 mishandles use of add_key for a key that already exists but is uninstantiated, which allows local users to cause a denial of service (NULL pointer dereference and system crash) or possibly have unspecified other impact via a crafted system call.

El subsistema de claves KEYS en el kernel Linux hasta la versión 4.13.7 gestiona de manera incorrecta el uso de add_key para una clave que ya existe, pero no se ha probado, lo que permite que usuarios locales provoquen una denegación de servicio (desreferencia de puntero NULL y cierre inesperado del sistema) o que tengan un impacto sin especificar mediante una llamada del sistema manipulada.

A vulnerability was found in the key management subsystem of the Linux kernel. An update on an uninstantiated key could cause a kernel panic, leading to denial of service (DoS).

*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

2017-10-14 CVE Reserved
2017-10-14 CVE Published
2023-03-08 EPSS Updated
2024-08-05 CVE Updated
---------- Exploited in Wild
---------- KEV Due Date
---------- First Exploit

CWE

CWE-476: NULL Pointer Dereference

CAPEC

References (9)

URL	Tag	Source
https://lists.debian.org/debian-lts-announce/2017/12/msg00004.html	Mailing List
https://www.mail-archive.com/linux-kernel%40vger.kernel.org/msg1499828.html	X_refsource_misc

URL	Date	SRC

URL	Date	SRC
https://marc.info/?t=150654188100001&r=1&w=2	2023-11-07
https://marc.info/?t=150783958600011&r=1&w=2	2023-11-07

URL	Date	SRC
https://access.redhat.com/errata/RHSA-2018:0654	2023-11-07
https://bugzilla.redhat.com/show_bug.cgi?id=1498016	2018-04-10
https://usn.ubuntu.com/3798-1	2023-11-07
https://usn.ubuntu.com/3798-2	2023-11-07
https://access.redhat.com/security/cve/CVE-2017-15299	2018-04-10

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"				<= 4.13.6 Search vendor "Linux" for product "Linux Kernel" and version " <= 4.13.6"		-		Affected