Linux Kernel fs/nfs/nfs4file.c __nfs42_ssc_open use after free

CVSS Meta Temp Score
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Current Exploit Price (≈)
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CTI Interest Score
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6.8$0-$5k0.00

Summaryinfo

A vulnerability was found in Linux Kernel. It has been declared as critical. Affected by this vulnerability is the function __nfs42_ssc_open of the file fs/nfs/nfs4file.c. The manipulation results in use after free. This vulnerability is reported as CVE-2022-4379. The attack can be launched remotely. No exploit exists. Applying a patch is advised to resolve this issue.

Detailsinfo

A vulnerability, which was classified as critical, was found in Linux Kernel (Operating System) (version now known). Affected is the function __nfs42_ssc_open of the file fs/nfs/nfs4file.c. The manipulation with an unknown input leads to a use after free vulnerability. CWE is classifying the issue as CWE-416. Referencing memory after it has been freed can cause a program to crash, use unexpected values, or execute code. This is going to have an impact on availability.

The weakness was disclosed 01/03/2023. The advisory is shared for download at access.redhat.com. This vulnerability is traded as CVE-2022-4379 since 12/09/2022. There are known technical details, but no exploit is available.

The vulnerability scanner Nessus provides a plugin with the ID 239841 (TencentOS Server 4: kernel (TSSA-2024:0960)), which helps to determine the existence of the flaw in a target environment.

Applying the patch 338ca73cbfa154c0d5ee1e264c203441884a6f04 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 Tenable (239841). VulDB is the best source for vulnerability data and more expert information about this specific topic.

Productinfo

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Vendor

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License

Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 7.0
VulDB Meta Temp Score: 6.8

VulDB Base Score: 6.5
VulDB Temp Score: 6.2
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 7.5
NVD Vector: 🔍

CVSSv2info

AVACAuCIA
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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: No
Local: No
Remote: Yes

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Nessus ID: 239841
Nessus Name: TencentOS Server 4: kernel (TSSA-2024:0960)

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Patch
Status: 🔍

0-Day Time: 🔍

Patch: 338ca73cbfa154c0d5ee1e264c203441884a6f04

Timelineinfo

12/09/2022 🔍
01/03/2023 +25 days 🔍
01/03/2023 +0 days 🔍
06/19/2025 +898 days 🔍

Sourcesinfo

Vendor: kernel.org

Advisory: FEDORA-2023-3fd7349f60
Status: Confirmed

CVE: CVE-2022-4379 (🔍)
GCVE (CVE): GCVE-0-2022-4379
GCVE (VulDB): GCVE-100-217272

Entryinfo

Created: 01/03/2023 12:15
Updated: 06/19/2025 20:57
Changes: 01/03/2023 12:15 (41), 01/27/2023 11:22 (2), 01/27/2023 11:29 (11), 06/19/2025 20:57 (17)
Complete: 🔍
Cache ID: 216::103

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

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