CVE-2022-48784

Source
https://nvd.nist.gov/vuln/detail/CVE-2022-48784
Import Source
https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2022-48784.json
JSON Data
https://api.osv.dev/v1/vulns/CVE-2022-48784
Related
Published
2024-07-16T12:15:03Z
Modified
2024-09-18T01:00:21Z
Summary
[none]
Details

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 cfg80211destroyifaces() already runs while nl80211netlinknotify() is still marking some interfaces as nlownerdead.

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.

References

Affected packages

Debian:12 / linux

Package

Name
linux
Purl
pkg:deb/debian/linux?arch=source

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
5.16.11-1

Ecosystem specific

{
    "urgency": "not yet assigned"
}

Debian:13 / linux

Package

Name
linux
Purl
pkg:deb/debian/linux?arch=source

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
5.16.11-1

Ecosystem specific

{
    "urgency": "not yet assigned"
}