IM
IronMonkey Threat Research

CVE-2022-47929 MEDIUM

Published: 2023-01-17 | Last Modified: 2025-04-04 | Status: Modified

Description

In the Linux kernel before 6.1.6, a NULL pointer dereference bug in the traffic control subsystem allows an unprivileged user to trigger a denial of service (system crash) via a crafted traffic control configuration that is set up with "tc qdisc" and "tc class" commands. This affects qdisc_graft in net/sched/sch_api.c.

Additional Descriptions (1)

En el kernel de Linux anterior a 6.1.6, un error de desreferencia de puntero NULL en el subsistema de control de tráfico permite a un usuario sin privilegios desencadenar una denegación de servicio (caída del sistema) a través de una configuración de control de tráfico manipulada con comandos "tc qdisc" y "tc class". Esto afecta a qdisc_graft en net/sched/sch_api.c.

CVSS Metrics

Base Score: 5.5 (MEDIUM)

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Attack VectorLOCAL
Attack ComplexityLOW
Privileges RequiredLOW
User InteractionNONE
ScopeUNCHANGED
Confidentiality ImpactNONE
Integrity ImpactNONE
Availability ImpactHIGH

Source: [email protected]

Type: Primary

Exploitability Score: 1.8

Impact Score: 3.6

Weaknesses

Source Type Description
[email protected] Primary
en CWE-476
134c704f-9b21-4f2e-91b3-4a467353bcc0 Secondary
en CWE-476

Affected Products

Vendor Product Version Update Type
linux linux_kernel * <built-in method update of dict object at 0x7fd34019d580> Operating System
debian debian_linux 11.0 <built-in method update of dict object at 0x7fd3846152c0> Operating System

Affected Configurations

Operator: OR

Vulnerable CPE
Yes cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*

Operator: OR

Vulnerable CPE
Yes cpe:2.3:o:debian:debian_linux:11.0:*:*:*:*:*:*:*

References