CVE-2022-48784
cfg80211: fix race in netlink owner interface destruction
- Published
- Updated
- Reserved
- Assigned by
- Linux
Description
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.
Scores
| Scored by | CVSS | Score | Vector |
|---|---|---|---|
| NVDNVD · Analyzed | 3.1 | Medium4.7 | CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H |
- EPSS (exploitation in 30 days)
- 0.17% · top 93% of all CVEs (4 Nov 2026)
- CISA SSVC
- Exploitation: none · Automatable: no · Technical impact: partial
The list uses the assigner's score when there is one, then CISA's, then NVD's: Medium 4.7.
Weakness
Affected products
- affected ea6b2098dd02789f68770fd3d5a373732207be2f – < 241e633cb379c4f332fc1baf2abec95ec840cbeb
- affected ea6b2098dd02789f68770fd3d5a373732207be2f – < c979f792a2baf6d0f3419587668a1a6eba46a3d2
- affected ea6b2098dd02789f68770fd3d5a373732207be2f – < f0a6fd1527067da537e9c48390237488719948ed
- affected 2e4f97122f3a9df870dfe9671994136448890768
- affected 5.12.1 – < 5.13
- affected 5.13
- unaffected < 5.13
- unaffected 5.15.25 – ≤ 5.15.*
- unaffected 5.16.11 – ≤ 5.16.*
- unaffected 5.17 – ≤ *
References (3)
- https://git.kernel.org/stable/c/241e633cb379c4f332fc1baf2abec95ec840cbeb (opens in a new tab)x_transferred
- https://git.kernel.org/stable/c/c979f792a2baf6d0f3419587668a1a6eba46a3d2 (opens in a new tab)x_transferred
- https://git.kernel.org/stable/c/f0a6fd1527067da537e9c48390237488719948ed (opens in a new tab)x_transferred
Sources
The same CVE in the primary databases and aggregators, to check against.
- CVE.org record (opens in a new tab)
- CVE List JSON (GitHub) (opens in a new tab)
- NVD (opens in a new tab)
- FIRST EPSS (opens in a new tab)
- OSV.dev (opens in a new tab)
- GitHub Advisories (opens in a new tab)
- CIRCL Vulnerability-Lookup (opens in a new tab)
Badge for a README or a ticket
[](https://trackcve.app/cve/CVE-2022-48784)Record last updated .