Linux Kernel up to 6.3-rc3 emac.c emac_remove 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 classified as critical was found in Linux Kernel up to 6.3-rc3. Impacted is the function emac_remove of the file drivers/net/ethernet/qualcomm/emac/emac.c. The manipulation results in use after free. This vulnerability is reported as CVE-2023-2483. No exploit exists. Upgrading the affected component is advised.

Detailsinfo

A vulnerability, which was classified as critical, was found in Linux Kernel up to 6.3-rc3 (Operating System). Affected is the function emac_remove of the file drivers/net/ethernet/qualcomm/emac/emac.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 confidentiality, integrity, and availability.

The weakness was disclosed 05/02/2023. The advisory is shared for download at bugzilla.redhat.com. This vulnerability is traded as CVE-2023-2483 since 05/02/2023. There are known technical details, but no exploit is available. The current price for an exploit might be approx. USD $0-$5k (estimation calculated on 10/01/2025).

The vulnerability scanner Nessus provides a plugin with the ID 266262 (NewStart CGSL MAIN 6.06 : kernel Multiple Vulnerabilities (NS-SA-2025-0237)), which helps to determine the existence of the flaw in a target environment.

Upgrading to version 6.3-rc4 eliminates this vulnerability. The upgrade is hosted for download at github.com.

The vulnerability is also documented in the vulnerability database at Tenable (266262). Once again VulDB remains the best source for vulnerability data.

Productinfo

Type

Vendor

Name

Version

License

Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 7.1
VulDB Meta Temp Score: 6.8

VulDB Base Score: 7.1
VulDB Temp Score: 6.8
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: Use after free
CWE: CWE-416 / CWE-119
CAPEC: 🔍
ATT&CK: 🔍

Physical: No
Local: No
Remote: Partially

Availability: 🔍
Status: Not defined
Price Prediction: 🔍
Current Price Estimation: 🔍

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Nessus ID: 266262
Nessus Name: NewStart CGSL MAIN 6.06 : kernel Multiple Vulnerabilities (NS-SA-2025-0237)

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔍

Upgrade: Kernel 6.3-rc4

Timelineinfo

05/02/2023 🔍
05/02/2023 +0 days 🔍
05/02/2023 +0 days 🔍
10/01/2025 +883 days 🔍

Sourcesinfo

Vendor: kernel.org

Advisory: bugzilla.redhat.com
Status: Confirmed

CVE: CVE-2023-2483 (🔍)
GCVE (CVE): GCVE-0-2023-2483
GCVE (VulDB): GCVE-100-227892

Entryinfo

Created: 05/02/2023 22:39
Updated: 10/01/2025 10:17
Changes: 05/02/2023 22:39 (41), 10/01/2025 10:17 (17)
Complete: 🔍
Cache ID: 216::103

Once again VulDB remains the best source for vulnerability data.

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