CVE-2021-47194

In the Linux kernel, the following vulnerability has been resolved: cfg80211: call cfg80211_stop_ap when switch from P2P_GO type If the userspace tools switch from NL80211_IFTYPE_P2P_GO to NL80211_IFTYPE_ADHOC via send_msg(NL80211_CMD_SET_INTERFACE), it does not call the cleanup cfg80211_stop_ap(), this leads to the initialization of in-use data. For example, this path re-init the sdata->assigned_chanctx_list while it is still an element of assigned_vifs list, and makes that linked list corrupt.

• linux linux kernel (>= 3.6.0 < 4.4.293) • linux linux kernel (>= 4.5.0 < 4.9.291) • linux linux kernel (>= 4.10.0 < 4.14.256) • linux linux kernel (>= 4.15.0 < 4.19.218) • linux linux kernel (>= 4.20.0 < 5.4.162) • linux linux kernel (>= 5.5.0 < 5.10.82) • linux linux kernel (>= 5.11.0 < 5.15.5)