Linux Kernel up to 6.5-rc4 Netfilter nft_set_pipapo.c nft_pipapo_remove use after free

CVSS Meta Temp Score
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CTI Interest Score
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7.0$0-$5k0.00

Summaryinfo

A vulnerability has been found in Linux Kernel up to 6.5-rc4 and classified as problematic. Affected by this vulnerability is the function nft_pipapo_remove of the file net/netfilter/nft_set_pipapo.c of the component Netfilter. The manipulation leads to use after free. This vulnerability is listed as CVE-2023-4004. There is no available exploit. The affected component should be upgraded.

Detailsinfo

A vulnerability was found in Linux Kernel up to 6.5-rc4 (Operating System). It has been rated as problematic. This issue affects the function nft_pipapo_remove of the file net/netfilter/nft_set_pipapo.c of the component Netfilter. The manipulation with an unknown input leads to a use after free vulnerability. Using CWE to declare the problem leads to CWE-416. Referencing memory after it has been freed can cause a program to crash, use unexpected values, or execute code. The impact remains unknown.

The weakness was presented 07/30/2023. It is possible to read the advisory at bugzilla.redhat.com. The identification of this vulnerability is CVE-2023-4004 since 07/30/2023. Technical details of the vulnerability are known, but there is no available exploit.

Upgrading to version 6.5-rc5 eliminates this vulnerability. Applying a patch is able to eliminate this problem. The bugfix is ready for download at patchwork.ozlabs.org. The best possible mitigation is suggested to be upgrading to the latest version.

The vulnerability is also documented in the vulnerability database at EUVD (EUVD-2023-53899). Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.

Productinfo

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Version

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Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 7.0
VulDB Meta Temp Score: 7.0

VulDB Base Score: 5.5
VulDB Temp Score: 5.3
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 7.8
NVD Vector: 🔍

CNA Base Score: 7.8
CNA Vector (Red Hat, Inc.): 🔍

CVSSv2info

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

Exploitinginfo

Class: Use after free
CWE: CWE-416 / CWE-119
CAPEC: 🔍
ATT&CK: 🔍

Physical: Partially
Local: Yes
Remote: Partially

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: Upgrade
Status: 🔍

0-Day Time: 🔍

Upgrade: Kernel 6.5-rc5
Patch: patchwork.ozlabs.org

Timelineinfo

07/30/2023 🔍
07/30/2023 +0 days 🔍
07/30/2023 +0 days 🔍
11/09/2025 +833 days 🔍

Sourcesinfo

Vendor: kernel.org

Advisory: bugzilla.redhat.com
Status: Confirmed

CVE: CVE-2023-4004 (🔍)
GCVE (CVE): GCVE-0-2023-4004
GCVE (VulDB): GCVE-100-235763
EUVD: 🔍

Entryinfo

Created: 07/30/2023 18:45
Updated: 11/09/2025 02:05
Changes: 07/30/2023 18:45 (42), 08/23/2023 14:49 (1), 08/23/2023 14:51 (12), 09/13/2024 21:42 (27), 11/09/2025 02:05 (1)
Complete: 🔍
Cache ID: 216::103

Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.

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