VDB-244862 · CVE-2023-6039 · GCVE-0-2023-6039

Linux Kernel up to 6.5-rc4 lan78xx.c lan78xx_disconnect use after free

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.
5.4	$0-$5k	0.00

Summaryinfo

A vulnerability, which was classified as critical, was found in Linux Kernel up to 6.5-rc4. This affects the function lan78xx_disconnect of the file drivers/net/usb/lan78xx.c. Such manipulation leads to use after free. This vulnerability is uniquely identified as CVE-2023-6039. Local access is required to approach this attack. No exploit exists. You should upgrade the affected component.

Detailsinfo

A vulnerability was found in Linux Kernel up to 6.5-rc4 (Operating System). It has been rated as critical. Affected by this issue is the function lan78xx_disconnect of the file drivers/net/usb/lan78xx.c. The manipulation with an unknown input leads to a use after free vulnerability. Using CWE to declare the problem leads to CWE-416. Referencing memory after it has been freed can cause a program to crash, use unexpected values, or execute code. Impacted is availability.

The weakness was disclosed 11/09/2023. The advisory is available at bugzilla.redhat.com. This vulnerability is handled as CVE-2023-6039 since 11/08/2023. Technical details are known, but there is no available exploit.

Upgrading to version 6.5-rc5 eliminates this vulnerability. The upgrade is hosted for download at github.com. Applying the patch 1e7417c188d0a83fb385ba2dbe35fd2563f2b6f3 is able to eliminate this problem. The bugfix is ready for download at github.com. The best possible mitigation is suggested to be upgrading to the latest version.

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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: 5.5
VulDB Meta Temp Score: 5.4

VulDB Base Score: 5.5
VulDB Temp Score: 5.3
VulDB Vector: 🔍
VulDB Reliability: 🔍

CNA Base Score: 5.5
CNA Vector (Red Hat, Inc.): 🔍

CVSSv2info

AV	AC	Au	C	I	A
💳	💳	💳	💳	💳	💳
💳	💳	💳	💳	💳	💳
💳	💳	💳	💳	💳	💳

Vector	Complexity	Authentication	Confidentiality	Integrity	Availability
Unlock	Unlock	Unlock	Unlock	Unlock	Unlock
Unlock	Unlock	Unlock	Unlock	Unlock	Unlock
Unlock	Unlock	Unlock	Unlock	Unlock	Unlock

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

Exploitinginfo

Class: Use after free
CWE: CWE-416 / CWE-119
CAPEC: 🔍
ATT&CK: 🔍

Physical: Partially
Local: Yes
Remote: No

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔍

Upgrade: Kernel 6.5-rc5
Patch: 1e7417c188d0a83fb385ba2dbe35fd2563f2b6f3

Timelineinfo

11/08/2023 🔍
11/09/2023 +1 days 🔍
11/09/2023 +0 days 🔍
12/05/2023 +26 days 🔍

Sourcesinfo

Vendor: kernel.org

Advisory: 1e7417c188d0a83fb385ba2dbe35fd2563f2b6f3
Status: Confirmed

CVE: CVE-2023-6039 (🔍)
GCVE (CVE): GCVE-0-2023-6039
GCVE (VulDB): GCVE-100-244862

Entryinfo

Created: 11/09/2023 04:20
Updated: 12/05/2023 14:17
Changes: 11/09/2023 04:20 (44), 12/05/2023 14:14 (2), 12/05/2023 14:17 (11)
Complete: 🔍
Cache ID: 216::103