CVE-2023-53588

In the Linux kernel, the following vulnerability has been resolved:

wifi: mac80211: check for station first in client probe

When probing a client, first check if we have it, and then check for the channel context, otherwise you can trigger the warning there easily by probing when the AP isn't even started yet. Since a client existing means the AP is also operating, we can then keep the warning.

Also simplify the moved code a bit.

The bug was a logical issue in ieee80211_probe_client() where the channel context was checked before confirming the station's existence. This could trigger kernel warnings (WARN_ON) or minor instability when probing clients before the AP is started.

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.