SB2024062536 - Resource management error in Linux kernel net wireless driver
Published: June 25, 2024 Updated: May 13, 2025
Security Bulletin ID
SB2024062536
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) Resource management error (CVE-ID: CVE-2021-47396)
The vulnerability allows a local user to perform a denial of service (DoS) attack.
The vulnerability exists due to resource management error within the mac80211_hwsim_beacon() function in drivers/net/wireless/mac80211_hwsim.c. A local user can perform a denial of service (DoS) attack.
Remediation
Install update from vendor's website.
References
- https://git.kernel.org/stable/c/9bee85de2c8155388c09a2e1530a243ec1c96f05
- https://git.kernel.org/stable/c/2c204cf594df3b9468368dc9d0b24d482d93cda7
- https://git.kernel.org/stable/c/ed2adf69e29848d1eb9df99633dde655421c92ed
- https://git.kernel.org/stable/c/313bbd1990b6ddfdaa7da098d0c56b098a833572
- https://mirrors.edge.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.10.71
- https://mirrors.edge.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.14.10
- https://mirrors.edge.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.15
- https://mirrors.edge.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.4.151