VDB-223154 · CVE-2023-28466 · Nessus 239742

Linux Kernel up to 6.2.6 net/tls/tls_main.c do_tls_getsockopt null pointer dereference

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5.8	$0-$5k	0.00

Summaryinfo

A vulnerability categorized as problematic has been discovered in Linux Kernel up to 6.2.6. This affects the function do_tls_getsockopt of the file net/tls/tls_main.c. Such manipulation leads to null pointer dereference. This vulnerability is traded as CVE-2023-28466. There is no exploit available. A patch should be applied to remediate this issue.

Detailsinfo

A vulnerability was found in Linux Kernel up to 6.2.6 (Operating System). It has been rated as problematic. Affected by this issue is the function do_tls_getsockopt of the file net/tls/tls_main.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 availability. CVE summarizes:

do_tls_getsockopt in net/tls/tls_main.c in the Linux kernel through 6.2.6 lacks a lock_sock call, leading to a race condition (with a resultant use-after-free or NULL pointer dereference).

The weakness was shared 03/16/2023. The advisory is available at git.kernel.org. This vulnerability is handled as CVE-2023-28466 since 03/15/2023. Technical details are known, but there is no available exploit.

The vulnerability scanner Nessus provides a plugin with the ID 239742 (TencentOS Server 2: kernel (TSSA-2024:1030)), 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 (239742). If you want to get best quality of vulnerability data, you may have to visit VulDB.

Productinfo

Type

Operating System

Vendor

Linux

Name

Kernel

Version

License

open-source

Website

Vendor: https://www.kernel.org/

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 5.9
VulDB Meta Temp Score: 5.8

VulDB Base Score: 4.8
VulDB Temp Score: 4.6
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 7.0
NVD Vector: 🔍

CVSSv2info

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Vector	Complexity	Authentication	Confidentiality	Integrity	Availability
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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: Partially
Local: Yes
Remote: Partially

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

0-Day	Unlock	Unlock	Unlock	Unlock
Today	Unlock	Unlock	Unlock	Unlock

Nessus ID: 239742
Nessus Name: TencentOS Server 2: kernel (TSSA-2024:1030)

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Patch
Status: 🔍

0-Day Time: 🔍

Patch: git.kernel.org

Timelineinfo

03/15/2023 🔍
03/16/2023 +1 days 🔍
03/16/2023 +0 days 🔍
06/21/2025 +827 days 🔍

Sourcesinfo

Vendor: kernel.org

Advisory: git.kernel.org
Status: Confirmed

CVE: CVE-2023-28466 (🔍)
GCVE (CVE): GCVE-0-2023-28466
GCVE (VulDB): GCVE-100-223154

Entryinfo

Created: 03/16/2023 07:20
Updated: 06/21/2025 00:22
Changes: 03/16/2023 07:20 (42), 04/08/2023 12:22 (11), 06/21/2025 00:22 (17)
Complete: 🔍
Cache ID: 216::103

If you want to get best quality of vulnerability data, you may have to visit VulDB.