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CVE-2023-6817

nvd nist
Published: Dec 18, 2023Modified: Jun 17, 2026

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7.8
Vector
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Exploitability: 1.8 / Impact: 5.9
Source: NVD

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.

Affected (8)

Products: Linux: Linux Kernel
Linux
1 product
Linux Kernel
Configuration A
8 vulnerable
Vulnerable SoftwareAffected Versions
Linux
Linux Kernel
From 5.11 to 5.15.143
Linux Kernel
From 5.16 to 6.1.68
Linux Kernel
From 5.6 to 5.10.204
Linux Kernel
From 6.2 to 6.6.7
Linux Kernel
Version 6.7 rc1
Linux Kernel
Version 6.7 rc2
Linux Kernel
Version 6.7 rc3
Linux Kernel
Version 6.7 rc4

Related CWEs

CWE-416
Use After Free
The product reuses or references memory after it has been freed. At some point afterward, the memory may be allocated again and saved in another pointer, while the original pointer references a location somewhere within the new allocation. Any operations using the original pointer are no longer valid because the memory "belongs" to the code that operates on the new pointer.

References (14)

Source: cve-coordination@google.com
Source: cve-coordination@google.com
Source: cve-coordination@google.com
Source: cve-coordination@google.com
Mailing ListPatch
Source: cve-coordination@google.com
Patch
Source: cve-coordination@google.com
Source: af854a3a-2127-422b-91ae-364da2661108
Source: af854a3a-2127-422b-91ae-364da2661108
Source: af854a3a-2127-422b-91ae-364da2661108
Source: af854a3a-2127-422b-91ae-364da2661108
Mailing ListPatch
Source: af854a3a-2127-422b-91ae-364da2661108
Patch
Source: af854a3a-2127-422b-91ae-364da2661108
Source: 0b142b55-0307-4c5a-b3c9-f314f3fb7c5e
Source: 0b142b55-0307-4c5a-b3c9-f314f3fb7c5e

Timeline

No history available yet.