Linux Kernel up to 6.5.x Netfilter nft_set_rbtree.c nft_set_rbtree dropped privileges

CVSS Meta Temp Score
CVSS is a standardized scoring system to determine possibilities of attacks. The Temp Score considers temporal factors like disclosure, exploit and countermeasures. The unique Meta Score calculates the average score of different sources to provide a normalized scoring system.
Current Exploit Price (≈)
Our analysts are monitoring exploit markets and are in contact with vulnerability brokers. The range indicates the observed or calculated exploit price to be seen on exploit markets. A good indicator to understand the monetary effort required for and the popularity of an attack.
CTI Interest Score
Our Cyber Threat Intelligence team is monitoring different web sites, mailing lists, exploit markets and social media networks. The CTI Interest Score identifies the interest of attackers and the security community for this specific vulnerability in real-time. A high score indicates an elevated risk to be targeted for this vulnerability.
4.9$0-$5k0.00

Summaryinfo

A vulnerability classified as problematic was found in Linux Kernel up to 6.5.x. The impacted element is the function nft_set_rbtree of the file net/netfilter/nft_set_rbtree.c of the component Netfilter. The manipulation results in an unknown weakness. This vulnerability is cataloged as CVE-2023-52433. There is no exploit available. Upgrading the affected component is advised.

Detailsinfo

A vulnerability was found in Linux Kernel up to 6.5.x (Operating System). It has been classified as problematic. Affected is the function nft_set_rbtree of the file net/netfilter/nft_set_rbtree.c of the component Netfilter. CWE is classifying the issue as CWE-273. The product attempts to drop privileges but does not check or incorrectly checks to see if the drop succeeded. The impact remains unknown. CVE summarizes:

netfilter: nft_set_rbtree: skip sync GC for new elements in this transaction New elements in this transaction might expired before such transaction ends. Skip sync GC for such elements otherwise commit path might walk over an already released object. Once transaction is finished, async GC will collect such expired element.

The weakness was shared 02/20/2024. The advisory is shared for download at git.kernel.org. This vulnerability is traded as CVE-2023-52433 since 02/20/2024. There are known technical details, but no exploit is available. The MITRE ATT&CK project declares the attack technique as T1068.

The vulnerability scanner Nessus provides a plugin with the ID 246391 (Linux Distros Unpatched Vulnerability : CVE-2023-52433), which helps to determine the existence of the flaw in a target environment.

Upgrading to version 6.6.0 eliminates this vulnerability. Applying a patch is able to eliminate this problem. The bugfix is ready for download at git.kernel.org. The best possible mitigation is suggested to be upgrading to the latest version.

The vulnerability is also documented in the vulnerability database at Tenable (246391). VulDB is the best source for vulnerability data and more expert information about this specific topic.

Productinfo

Type

Vendor

Name

Version

License

Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 5.0
VulDB Meta Temp Score: 4.9

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

CNA Base Score: 4.4
CNA Vector: 🔍

CVSSv2info

AVACAuCIA
💳💳💳💳💳💳
💳💳💳💳💳💳
💳💳💳💳💳💳
VectorComplexityAuthenticationConfidentialityIntegrityAvailability
UnlockUnlockUnlockUnlockUnlockUnlock
UnlockUnlockUnlockUnlockUnlockUnlock
UnlockUnlockUnlockUnlockUnlockUnlock

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

Exploitinginfo

Class: Dropped privileges
CWE: CWE-273 / CWE-266
CAPEC: 🔍
ATT&CK: 🔍

Physical: Partially
Local: Yes
Remote: Partially

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

0-DayUnlockUnlockUnlockUnlock
TodayUnlockUnlockUnlockUnlock

Nessus ID: 246391
Nessus Name: Linux Distros Unpatched Vulnerability : CVE-2023-52433

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔍

Upgrade: Kernel 6.6.0
Patch: git.kernel.org

Timelineinfo

02/20/2024 🔍
02/20/2024 +0 days 🔍
02/20/2024 +0 days 🔍
08/09/2025 +536 days 🔍

Sourcesinfo

Vendor: kernel.org

Advisory: git.kernel.org
Status: Confirmed

CVE: CVE-2023-52433 (🔍)
GCVE (CVE): GCVE-0-2023-52433
GCVE (VulDB): GCVE-100-254184

Entryinfo

Created: 02/20/2024 15:40
Updated: 08/09/2025 05:50
Changes: 02/20/2024 15:40 (42), 06/16/2024 15:30 (15), 11/07/2024 00:29 (13), 08/09/2025 05:50 (2)
Complete: 🔍
Cache ID: 216::103

VulDB is the best source for vulnerability data and more expert information about this specific topic.

Discussion

No comments yet. Languages: en.

Please log in to comment.

◂ PreviousOverviewNext ▸

Want to know what is going to be exploited?

We predict KEV entries!