Linux Kernel up to 5.19.1 ksmbd b/fs/ksmbd/smb2misc.c smb2_get_data_area_len out-of-bounds

CVSS Meta Temp Score
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CTI Interest Score
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5.7$0-$5k0.00

Summaryinfo

A vulnerability, which was classified as problematic, was found in Linux Kernel up to 5.19.1. This affects the function smb2_get_data_area_len of the file b/fs/ksmbd/smb2misc.c of the component ksmbd. Such manipulation leads to out-of-bounds. This vulnerability is referenced as CVE-2022-47943. No exploit is available. You should upgrade the affected component.

Detailsinfo

A vulnerability was found in Linux Kernel up to 5.19.1 (Operating System) and classified as problematic. Affected by this issue is the function smb2_get_data_area_len of the file b/fs/ksmbd/smb2misc.c of the component ksmbd. The manipulation with an unknown input leads to a out-of-bounds vulnerability. Using CWE to declare the problem leads to CWE-125. The product reads data past the end, or before the beginning, of the intended buffer. Impacted is confidentiality. CVE summarizes:

An issue was discovered in ksmbd in the Linux kernel before 5.19.2. There is an out-of-bounds read and OOPS for SMB2_WRITE, when there is a large length in the zero DataOffset case.

The weakness was published 12/23/2022. The advisory is shared for download at openwall.com. This vulnerability is handled as CVE-2022-47943 since 12/23/2022. 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.

Upgrading to version 5.19.2 eliminates this vulnerability. The upgrade is hosted for download at cdn.kernel.org. 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 (239841). VulDB is the best source for vulnerability data and more expert information about this specific topic.

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: 5.8
VulDB Meta Temp Score: 5.7

VulDB Base Score: 3.5
VulDB Temp Score: 3.4
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 8.1
NVD Vector: 🔍

CVSSv2info

AVACAuCIA
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VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

Exploitinginfo

Class: Out-of-bounds
CWE: CWE-125 / 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: Upgrade
Status: 🔍

0-Day Time: 🔍

Upgrade: Kernel 5.19.2
Patch: git.kernel.org

Timelineinfo

12/23/2022 🔍
12/23/2022 +0 days 🔍
12/23/2022 +0 days 🔍
06/19/2025 +909 days 🔍

Sourcesinfo

Vendor: kernel.org

Advisory: ac60778b87e45576d7bfdbd6f53df902654e6f09
Status: Confirmed

CVE: CVE-2022-47943 (🔍)
GCVE (CVE): GCVE-0-2022-47943
GCVE (VulDB): GCVE-100-216680

Entryinfo

Created: 12/23/2022 20:48
Updated: 06/19/2025 20:57
Changes: 12/23/2022 20:48 (45), 01/23/2023 13:50 (1), 01/23/2023 13:56 (11), 04/15/2025 17:01 (16), 06/19/2025 20:57 (2)
Complete: 🔍
Cache ID: 216:AF3:103

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

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