In the Linux kernel, the following vulnerability has been resolved:
wifi: mac80211: unlist vifs when their netdev is unregistered
mac80211 only removes vifs from the local->interfaces list when
an interface is removed via ieee80211_if_remove(), before it
unregisters the netdev. However, it's possible for a netdev to
be unregistered without going through that: When the netns that
holds the wiphy is destroyed, the wiphy is supposed to move to
the init_ns, but that can run into allocation failures.
Then, mac80211 has an interface listed that doesn't exist, and
will eventually hit
BUG: failure at net/wireless/core.h:141/wiphy_to_rdev()!
...
_cfg80211_unregister_wdev+0x24/0x36a [cfg80211]
cfg80211_unregister_wdev+0x15/0x1d [cfg80211]
ieee80211_remove_interfaces+0x1ff/0x257 [mac80211]
ieee80211_unregister_hw+0x73/0x1d1 [mac80211]
mac80211_hwsim_del_radio+0x114/0x166 [mac80211_hwsim]
Remove the interface from the list in ->ndo_uninit if it's still
around to avoid this.
Attack Parameters
Impact Assessment
CVSS Vector v3.1
Vulnerable Products 6
| Configuration | From (including) | Up to (excluding) |
|---|---|---|
|
Linux Linux_Kernel
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
|
2.6.32
|
6.1.189
|
|
Linux Linux_Kernel
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
|
2.6.32
|
6.6.158
|
|
Linux Linux_Kernel
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
|
2.6.32
|
6.12.112
|
|
Linux Linux_Kernel
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
|
2.6.32
|
6.18.54
|
|
Linux Linux_Kernel
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
|
2.6.32
|
7.2.8
|
|
Linux Linux_Kernel
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
|
2.6.32
|
7.3-rc4
|