CVE-2023-54071

Name of the Vulnerable Software and Affected Versions Linux kernel (affected versions not specified)

Description The Linux kernel contains a flaw within the rtw88 wifi driver related to rate updates. The ieee80211 ops::sta rc update function must be atomic to prevent a context switch within an RCU read-side critical section, which can lead to warnings and potential instability. The issue arises when ieee80211 chan bw change() holds an RCU read lock while calling drv sta rc update(). A work queue is implemented to address this by moving the original operations to a separate context. The issue manifests as a warning: "Voluntary context switch within RCU read-side critical section!".

Recommendations At the moment, there is no information about a newer version that contains a fix for this vulnerability.