Linux Kernel up to 5.15.14 kernel/bpf/verifier.c null pointer dereference

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.
5.6$0-$5k0.00

Summaryinfo

A vulnerability has been found in Linux Kernel up to 5.15.14 and classified as problematic. The affected element is an unknown function of the file kernel/bpf/verifier.c. The manipulation leads to null pointer dereference. This vulnerability is documented as CVE-2022-23222. The attack can be initiated remotely. There is not any exploit available. It is advisable to modify the configuration settings.

Detailsinfo

A vulnerability, which was classified as problematic, has been found in Linux Kernel up to 5.15.14 (Operating System). This issue affects an unknown part of the file kernel/bpf/verifier.c. The manipulation with an unknown input leads to a null pointer dereference vulnerability. Using CWE to declare the problem leads to 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. Impacted is confidentiality, integrity, and availability.

The weakness was released 01/14/2022. The advisory is shared at openwall.com. The identification of this vulnerability is CVE-2022-23222 since 01/14/2022. Technical details are known, but no exploit is available.

It is declared as proof-of-concept. The vulnerability scanner Nessus provides a plugin with the ID 211841 (RHEL 8 : kernel (RHSA-2024:10262)), which helps to determine the existence of the flaw in a target environment.

It is possible to mitigate the problem by applying the configuration setting set kernel.unprivileged_bpf_disabled = 1.

The vulnerability is also documented in the vulnerability database at Tenable (211841). Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

Productinfo

Type

Vendor

Name

Version

License

Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 6.3
VulDB Meta Temp Score: 5.6

VulDB Base Score: 6.3
VulDB Temp Score: 5.6
VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv2info

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

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

Exploitinginfo

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

Physical: No
Local: No
Remote: Yes

Availability: 🔍
Status: Proof-of-Concept

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

0-DayUnlockUnlockUnlockUnlock
TodayUnlockUnlockUnlockUnlock

Nessus ID: 211841
Nessus Name: RHEL 8 : kernel (RHSA-2024:10262)

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Config
Status: 🔍

0-Day Time: 🔍

Config: set kernel.unprivileged_bpf_disabled = 1

Timelineinfo

01/14/2022 🔍
01/14/2022 +0 days 🔍
01/14/2022 +0 days 🔍
11/26/2024 +1047 days 🔍

Sourcesinfo

Vendor: kernel.org

Advisory: openwall.com
Status: Not defined

CVE: CVE-2022-23222 (🔍)
GCVE (CVE): GCVE-0-2022-23222
GCVE (VulDB): GCVE-100-190361

Entryinfo

Created: 01/14/2022 12:47
Updated: 11/26/2024 19:51
Changes: 01/14/2022 12:47 (39), 01/14/2022 12:48 (1), 01/17/2022 08:02 (1), 11/26/2024 19:51 (16)
Complete: 🔍
Cache ID: 216::103

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

Discussion

No comments yet. Languages: en.

Please log in to comment.

◂ PreviousOverviewNext ▸

Do you need the next level of professionalism?

Upgrade your account now!