Linux Kernel nft_dynset.c nft_dynset_init null pointer dereference

CVSS Meta Temp Score
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CTI Interest Score
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5.1$0-$5k0.00

Summaryinfo

A vulnerability has been found in Linux Kernel and classified as problematic. Affected is the function nft_dynset_init of the file net/netfilter/nft_dynset.c. Performing a manipulation results in null pointer dereference. This vulnerability is reported as CVE-2023-6622. The attack requires a local approach. No exploit exists. It is suggested to install a patch to address this issue.

Detailsinfo

A vulnerability classified as problematic has been found in Linux Kernel (Operating System) (the affected version unknown). This affects the function nft_dynset_init of the file net/netfilter/nft_dynset.c. The manipulation with an unknown input leads to a null pointer dereference vulnerability. CWE is classifying the issue as CWE-476. A NULL pointer dereference occurs when the application dereferences a pointer that it expects to be valid, but is NULL, typically causing a crash or exit. This is going to have an impact on availability. The summary by CVE is:

A null pointer dereference vulnerability was found in nft_dynset_init() in net/netfilter/nft_dynset.c in nf_tables in the Linux kernel. This issue may allow a local attacker with CAP_NET_ADMIN user privilege to trigger a denial of service.

The weakness was disclosed 12/08/2023 as 3701cd390fd731ee7ae8b8006246c8db82c72bea. The advisory is shared at github.com. This vulnerability is uniquely identified as CVE-2023-6622 since 12/08/2023. Technical details are known, but no exploit is available.

Applying the patch 3701cd390fd731ee7ae8b8006246c8db82c72bea is able to eliminate this problem. The bugfix is ready for download at github.com.

The vulnerability is also documented in the vulnerability database at EUVD (EUVD-2023-58845). Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

Productinfo

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CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 5.1
VulDB Meta Temp Score: 5.1

VulDB Base Score: 4.4
VulDB Temp Score: 4.2
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 5.5
NVD Vector: 🔍

CNA Base Score: 5.5
CNA Vector (Red Hat, Inc.): 🔍

CVSSv2info

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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

Exploitinginfo

Class: Null pointer dereference
CWE: CWE-476 / CWE-404
CAPEC: 🔍
ATT&CK: 🔍

Physical: Partially
Local: Yes
Remote: No

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Patch
Status: 🔍

0-Day Time: 🔍

Patch: 3701cd390fd731ee7ae8b8006246c8db82c72bea

Timelineinfo

12/08/2023 🔍
12/08/2023 +0 days 🔍
12/08/2023 +0 days 🔍
07/24/2025 +593 days 🔍

Sourcesinfo

Vendor: kernel.org

Advisory: 3701cd390fd731ee7ae8b8006246c8db82c72bea
Status: Confirmed

CVE: CVE-2023-6622 (🔍)
GCVE (CVE): GCVE-0-2023-6622
GCVE (VulDB): GCVE-100-247257
EUVD: 🔍

Entryinfo

Created: 12/08/2023 19:25
Updated: 07/24/2025 01:02
Changes: 12/08/2023 19:25 (53), 09/14/2024 06:45 (27), 07/24/2025 01:02 (1)
Complete: 🔍
Cache ID: 216::103

Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

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