IM
IronMonkey Threat Research

CVE-2023-6817 HIGH

Published: 2023-12-18 | Last Modified: 2026-05-12 | Status: Modified

Description

A use-after-free vulnerability in the Linux kernel's netfilter: nf_tables component can be exploited to achieve local privilege escalation. The function nft_pipapo_walk did not skip inactive elements during set walk which could lead double deactivations of PIPAPO (Pile Packet Policies) elements, leading to use-after-free. We recommend upgrading past commit 317eb9685095678f2c9f5a8189de698c5354316a.

Additional Descriptions (1)

Una vulnerabilidad de use after free en el componente netfilter: nf_tables del kernel de Linux puede explotarse para lograr una escalada de privilegios local. La función nft_pipapo_walk no omitió elementos inactivos durante el recorrido establecido, lo que podría provocar desactivaciones dobles de elementos PIPAPO (Políticas de paquetes de pila), lo que llevaría a un use-after-free. Recomendamos actualizar después del commit 317eb9685095678f2c9f5a8189de698c5354316a.

CVSS Metrics

Base Score: 7.8 (HIGH)

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

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

Source: [email protected]

Type: Primary

Exploitability Score: 1.8

Impact Score: 5.9

Weaknesses

Source Type Description
[email protected] Secondary
en CWE-416
[email protected] Primary
en CWE-416

Affected Products

Vendor Product Version Update Type
linux linux_kernel * <built-in method update of dict object at 0x7fd36b37f8c0> Operating System
linux linux_kernel * <built-in method update of dict object at 0x7fd36b37fd40> Operating System
linux linux_kernel * <built-in method update of dict object at 0x7fd2901222c0> Operating System
linux linux_kernel * <built-in method update of dict object at 0x7fd290120b80> Operating System
linux linux_kernel 6.7 <built-in method update of dict object at 0x7fd36b37dd80> Operating System
linux linux_kernel 6.7 <built-in method update of dict object at 0x7fd36b37d200> Operating System
linux linux_kernel 6.7 <built-in method update of dict object at 0x7fd2901216c0> Operating System
linux linux_kernel 6.7 <built-in method update of dict object at 0x7fd290122480> Operating System

Affected Configurations

Operator: OR

Vulnerable CPE
Yes cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
Yes cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
Yes cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
Yes cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
Yes cpe:2.3:o:linux:linux_kernel:6.7:rc1:*:*:*:*:*:*
Yes cpe:2.3:o:linux:linux_kernel:6.7:rc2:*:*:*:*:*:*
Yes cpe:2.3:o:linux:linux_kernel:6.7:rc3:*:*:*:*:*:*
Yes cpe:2.3:o:linux:linux_kernel:6.7:rc4:*:*:*:*:*:*

References