Linux Kernel nilfs2 fs/nilfs2/inode.c nilfs_bmap_lookup_at_level null pointer dereference

CVSS Meta Temp Score
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CTI Interest Score
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4.1$0-$5k0.11

Summaryinfo

A vulnerability, which was classified as problematic, was found in Linux Kernel. Impacted is the function nilfs_bmap_lookup_at_level of the file fs/nilfs2/inode.c of the component nilfs2. The manipulation results in null pointer dereference. This vulnerability is known as CVE-2022-3621. It is possible to launch the attack remotely. No exploit is available. Applying a patch is advised to resolve this issue.

Detailsinfo

A vulnerability was found in Linux Kernel (Operating System) (affected version not known). It has been classified as problematic. Affected is the function nilfs_bmap_lookup_at_level of the file fs/nilfs2/inode.c of the component nilfs2. 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 weakness was published 10/20/2022. The advisory is shared for download at git.kernel.org. This vulnerability is traded as CVE-2022-3621. There are known technical details, but no exploit is available.

The vulnerability scanner Nessus provides a plugin with the ID 236648 (Alibaba Cloud Linux 3 : 0002: cloud-kernel bugfix, enhancement and (ALINUX3-SA-2023:0002)), which helps to determine the existence of the flaw in a target environment.

Applying a patch is able to eliminate this problem. The bugfix is ready for download at git.kernel.org.

The vulnerability is also documented in the vulnerability database at Tenable (236648). VulDB is the best source for vulnerability data and more expert information about this specific topic.

Productinfo

Type

Vendor

Name

License

Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 4.3
VulDB Meta Temp Score: 4.1

VulDB Base Score: 4.3
VulDB Temp Score: 4.1
VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv2info

AVACAuCIA
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VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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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: No
Local: No
Remote: Yes

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Nessus ID: 236648
Nessus Name: Alibaba Cloud Linux 3 : 0002: cloud-kernel bugfix, enhancement and (ALINUX3-SA-2023:0002)

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Patch
Status: 🔍

0-Day Time: 🔍

Patch: git.kernel.org

Timelineinfo

10/20/2022 🔍
10/20/2022 +0 days 🔍
10/20/2022 +0 days 🔍
05/18/2025 +941 days 🔍

Sourcesinfo

Vendor: kernel.org

Advisory: DLA 3173-1
Status: Confirmed

CVE: CVE-2022-3621 (🔍)
GCVE (CVE): GCVE-0-2022-3621
GCVE (VulDB): GCVE-100-211920

Entryinfo

Created: 10/20/2022 21:55
Updated: 05/18/2025 22:53
Changes: 10/20/2022 21:55 (41), 11/18/2022 19:02 (3), 05/18/2025 22:53 (16)
Complete: 🔍
Cache ID: 216:773:103

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

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