Linux Kernel up to 5.12.12 mac80211 Subsystem null pointer dereference

CVSS Meta Temp Score
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CTI Interest Score
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4.3$0-$5k0.00

Summaryinfo

A vulnerability was found in Linux Kernel up to 5.12.12. It has been rated as problematic. This affects an unknown part of the component mac80211 Subsystem. Performing a manipulation results in null pointer dereference. This vulnerability is cataloged as CVE-2021-38206. The attack must originate from the local network. There is no exploit available. Upgrading the affected component is advised.

Detailsinfo

A vulnerability classified as problematic has been found in Linux Kernel up to 5.12.12 (Operating System). This affects an unknown function of the component mac80211 Subsystem. The manipulation with an unknown input leads to a null pointer dereference vulnerability. CWE is classifying the issue as 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. This is going to have an impact on availability.

The weakness was shared 08/09/2021 as bddc0c411a45d3718ac535a070f349be8eca8d48. The advisory is shared at github.com. This vulnerability is uniquely identified as CVE-2021-38206. Neither technical details nor an exploit are publicly available.

Upgrading to version 5.12.13 eliminates this vulnerability. The upgrade is hosted for download at cdn.kernel.org. Applying a patch 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.

Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

Productinfo

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Version

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CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 4.5
VulDB Meta Temp Score: 4.4

VulDB Base Score: 3.5
VulDB Temp Score: 3.4
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 5.5
NVD Vector: 🔍

CVSSv2info

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

NVD Base Score: 🔍

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: 🔍

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Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔍

Upgrade: Kernel 5.12.13
Patch: github.com

Timelineinfo

08/08/2021 🔍
08/09/2021 +1 days 🔍
08/09/2021 +0 days 🔍
08/14/2021 +5 days 🔍

Sourcesinfo

Vendor: kernel.org

Advisory: bddc0c411a45d3718ac535a070f349be8eca8d48
Status: Confirmed

CVE: CVE-2021-38206 (🔍)
GCVE (CVE): GCVE-0-2021-38206
GCVE (VulDB): GCVE-100-180369

Entryinfo

Created: 08/09/2021 07:08
Updated: 08/14/2021 10:18
Changes: 08/09/2021 07:08 (43), 08/14/2021 10:13 (2), 08/14/2021 10:18 (18)
Complete: 🔍
Cache ID: 216::103

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