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high7.8

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 …

Impact

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.

Affected products

VendorProductAffected versions
LinuxLinux Kernel
from 3.6.0 before 4.4.293
from 4.5.0 before 4.9.291
from 4.10.0 before 4.14.256
from 4.15.0 before 4.19.218
from 4.20.0 before 5.4.162
from 5.5.0 before 5.10.82

Weakness classification

CWE-665

References