Null pointer dereference in Linux kernel - CVE-2021-38206

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Main Vulnerability Database Vulnerabilities #VU92758

Null pointer dereference in Linux kernel - CVE-2021-38206

Published: August 8, 2021 / Updated: August 12, 2021


Vulnerability identifier: #VU92758
CSH Severity: Low
CVSSv4.0: CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear
CVE-ID: CVE-2021-38206
CWE-ID: CWE-476
Exploitation vector: Local access
Exploit availability: No public exploit available
Vulnerable software:
Linux kernel
Software vendor:
Linux Foundation

Description

The vulnerability allows a local user to perform a denial of service (DoS) attack.

The mac80211 subsystem in the Linux kernel before 5.12.13, when a device supporting only 5 GHz is used, allows attackers to cause a denial of service (NULL pointer dereference in the radiotap parser) by injecting a frame with 802.11a rates.


Remediation

Install update from vendor's repository.

External links