SB2021080821 - Null pointer dereference in Linux kernel
Published: August 8, 2021
Security Bulletin ID
SB2021080821
Severity
Low
Patch available
YES
Number of vulnerabilities
1
Exploitation vector
Local access
Highest impact
Denial of service
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 1 security vulnerability.
1) Null pointer dereference (CVE-ID: CVE-2021-38206)
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 website.