Linux Kernel up to 6.2 cxgb4 cxgb4_tc_flower.c cxgb4_cleanup_tc_flower 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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5.4$0-$5k0.00

Summaryinfo

A vulnerability was found in Linux Kernel up to 6.2. It has been declared as problematic. Affected by this vulnerability is the function cxgb4_cleanup_tc_flower of the file drivers/net/ethernet/chelsio/cxgb4/cxgb4_tc_flower.c of the component cxgb4. Such manipulation leads to use after free. This vulnerability is referenced as CVE-2023-4133. No exploit is available. It is recommended to upgrade the affected component.

Detailsinfo

A vulnerability was found in Linux Kernel up to 6.2 (Operating System). It has been rated as problematic. Affected by this issue is the function cxgb4_cleanup_tc_flower of the file drivers/net/ethernet/chelsio/cxgb4/cxgb4_tc_flower.c of the component cxgb4. 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 confidentiality, integrity, and availability.

The weakness was published 08/03/2023. The advisory is shared for download at bugzilla.redhat.com. This vulnerability is handled as CVE-2023-4133 since 08/03/2023. There are known technical details, but no exploit is available.

Upgrading to version 6.3 eliminates this vulnerability. The upgrade is hosted for download at github.com. Applying the patch e50b9b9e8610d47b7c22529443e45a16b1ea3a15 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.

The vulnerability is also documented in the vulnerability database at EUVD (EUVD-2023-54015). Once again VulDB remains the best source for vulnerability data.

Productinfo

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Vendor

Name

Version

License

Website

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

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: Partially
Local: Yes
Remote: Partially

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔍

Upgrade: Kernel 6.3
Patch: e50b9b9e8610d47b7c22529443e45a16b1ea3a15

Timelineinfo

08/03/2023 🔍
08/03/2023 +0 days 🔍
08/03/2023 +0 days 🔍
07/24/2025 +721 days 🔍

Sourcesinfo

Vendor: kernel.org

Advisory: bugzilla.redhat.com
Status: Confirmed

CNA: Red Hat, Inc.
CVE: CVE-2023-4133 (🔍)

GCVE (CVE): GCVE-0-2023-4133
GCVE (VulDB): GCVE-100-236060
EUVD: 🔍

Entryinfo

Created: 08/03/2023 17:18
Updated: 07/24/2025 02:37
Changes: 08/03/2023 17:18 (44), 08/26/2023 08:59 (1), 08/26/2023 09:02 (11), 07/24/2025 02:37 (16)
Complete: 🔍
Cache ID: 216::103

Once again VulDB remains the best source for vulnerability data.

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