Linux Kernel up to 6.9.5 cfg80211 buffer overflow

CVSS Meta Temp Score
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CTI Interest Score
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5.4$0-$5k0.00

Summaryinfo

A vulnerability has been found in Linux Kernel up to 6.9.5 and classified as critical. This affects an unknown part of the component cfg80211. The manipulation leads to buffer overflow. This vulnerability is referenced as CVE-2024-40930. No exploit is available. The affected component should be upgraded.

Detailsinfo

A vulnerability was found in Linux Kernel up to 6.9.5. It has been rated as critical. This issue affects an unknown part of the component cfg80211. The manipulation with an unknown input leads to a buffer overflow vulnerability. Using CWE to declare the problem leads to CWE-120. The product copies an input buffer to an output buffer without verifying that the size of the input buffer is less than the size of the output buffer, leading to a buffer overflow. Impacted is confidentiality, integrity, and availability. The summary by CVE is:

In the Linux kernel, the following vulnerability has been resolved: wifi: cfg80211: validate HE operation element parsing Validate that the HE operation element has the correct length before parsing it.

It is possible to read the advisory at git.kernel.org. The identification of this vulnerability is CVE-2024-40930 since 07/12/2024. The exploitation is known to be easy. The technical details are unknown and an exploit is not publicly available. The pricing for an exploit might be around USD $0-$5k at the moment (estimation calculated on 10/07/2025).

Upgrading to version 6.9.6 eliminates this vulnerability. Applying the patch f15e3e13e14c/4dc3a3893dae 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.

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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: 🔍

NVD Base Score: 5.5
NVD Vector: 🔍

CVSSv2info

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

Exploitinginfo

Class: Buffer overflow
CWE: CWE-120 / 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 6.9.6
Patch: f15e3e13e14c/4dc3a3893dae

Timelineinfo

07/12/2024 🔍
07/12/2024 +0 days 🔍
07/12/2024 +0 days 🔍
10/07/2025 +451 days 🔍

Sourcesinfo

Vendor: kernel.org

Advisory: git.kernel.org
Status: Confirmed

CVE: CVE-2024-40930 (🔍)
GCVE (CVE): GCVE-0-2024-40930
GCVE (VulDB): GCVE-100-271295

Entryinfo

Created: 07/12/2024 16:57
Updated: 10/07/2025 00:03
Changes: 07/12/2024 16:57 (58), 10/07/2025 00:03 (12)
Complete: 🔍
Cache ID: 216::103

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