In the Linux kernel, the following vulnerability has been resolved:
cfg80211: fix race in netlink owner interface destruction
My previous fix here to fix the deadlock left a race where
the exact same deadlock (see the original commit referenced
below) can still happen if cfg80211_destroy_ifaces() already
runs while nl80211_netlink_notify() is still marking some
interfaces as nl_owner_dead.
The race happens because we have two loops here - first we
dev_close() all the netdevs, and then we destroy them. If we
also have two netdevs (first one need only be a wdev though)
then we can find one during the first iteration, close it,
and go to the second iteration -- but then find two, and try
to destroy also the one we didn't close yet.
Fix this by only iterating once.
Metrics
Affected Vendors & Products
References
History
Wed, 11 Sep 2024 13:30:00 +0000
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MITRE
Status: PUBLISHED
Assigner: Linux
Published: 2024-07-16T11:13:20.462Z
Updated: 2024-09-11T17:34:16.695Z
Reserved: 2024-06-20T11:09:39.068Z
Link: CVE-2022-48784
Vulnrichment
Updated: 2024-09-11T12:42:21.746Z
NVD
Status : Awaiting Analysis
Published: 2024-07-16T12:15:03.427
Modified: 2024-07-16T13:43:58.773
Link: CVE-2022-48784
Redhat