Linux Kernel 802.15.4 IEEE 802.15.4 Subsystem null pointer dereference

CVSS Meta Temp Score
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CTI Interest Score
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5.9$0-$5k0.00

Summaryinfo

A vulnerability identified as problematic has been detected in Linux Kernel 802.15.4. Affected is an unknown function of the component IEEE 802.15.4 Subsystem. This manipulation causes null pointer dereference. This vulnerability is tracked as CVE-2021-3659. The attack is possible to be carried out remotely. No exploit exists. It is recommended to apply a patch to fix this issue.

Detailsinfo

A vulnerability has been found in Linux Kernel 802.15.4 (Operating System) and classified as critical. Affected by this vulnerability is some unknown functionality of the component IEEE 802.15.4 Subsystem. The manipulation with an unknown input leads to a null pointer dereference vulnerability. The CWE definition for the vulnerability is 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. As an impact it is known to affect availability. The summary by CVE is:

A NULL pointer dereference flaw was found in the Linux kernel’s IEEE 802.15.4 wireless networking subsystem in the way the user closes the LR-WPAN connection. This flaw allows a local user to crash the system. The highest threat from this vulnerability is to system availability.

The weakness was disclosed 08/22/2022. It is possible to read the advisory at git.kernel.org. This vulnerability is known as CVE-2021-3659 since 07/22/2021. The technical details are unknown and an exploit is not publicly available.

Applying a patch is able to eliminate this problem. The bugfix is ready for download at git.kernel.org.

Be aware that VulDB is the high quality source for vulnerability data.

Productinfo

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CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 6.0
VulDB Meta Temp Score: 5.9

VulDB Base Score: 6.5
VulDB Temp Score: 6.2
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 5.5
NVD Vector: 🔍

CVSSv2info

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

Exploitinginfo

Class: Null pointer dereference
CWE: CWE-476 / CWE-404
CAPEC: 🔍
ATT&CK: 🔍

Physical: Partially
Local: Yes
Remote: Yes

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: Patch
Status: 🔍

0-Day Time: 🔍

Patch: git.kernel.org

Timelineinfo

07/22/2021 🔍
08/22/2022 +396 days 🔍
08/22/2022 +0 days 🔍
09/24/2022 +33 days 🔍

Sourcesinfo

Vendor: kernel.org

Advisory: git.kernel.org
Status: Confirmed

CVE: CVE-2021-3659 (🔍)
GCVE (CVE): GCVE-0-2021-3659
GCVE (VulDB): GCVE-100-206887

Entryinfo

Created: 08/22/2022 20:32
Updated: 09/24/2022 09:17
Changes: 08/22/2022 20:32 (41), 09/24/2022 09:17 (11)
Complete: 🔍
Cache ID: 216::103

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