CVE-2024-47713
kernel: wifi: mac80211: use two-phase skb reclamation in ieee80211_do_stop()
Severity
ModerateRed Hat Product Security
CVSS 3.1
Review impact separately from score.
Published · October 21, 2024
Updated · October 29, 2026
Description
A flaw was found in the Linux kernel's mac80211 wireless subsystem. A local attacker with low privileges could trigger a condition where the system attempts to transmit data with interrupts disabled during the ieee80211_do_stop() function. This incorrect handling of network packet buffers (SKBs) can lead to system instability or a denial of service (DoS), making the system unresponsive.
CVSS score applicability
The CVSS score(s) listed for this vulnerability do not reflect the associated product's status, and are included for informational purposes to better understand the severity of this vulnerability.
Mitigation
If WiFi functionality is not required, the mac80211 kernel module can be blacklisted to prevent it from loading. Create a file /etc/modprobe.d/blacklist-mac80211.conf with the content blacklist mac80211. A system reboot is required for this change to take effect. Disabling this module will prevent all WiFi operations on the system.
CVSS / CWE
CVSS 3.1 · 5.5CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
CWE-664 · Improper Control of a Resource Through its Lifetime