CVE-2026-98341wifi: cfg80211: don't free driver-owned scan requests
Updated under an hour ago ()
Does this affect you?
It affects Linux. Add what you run to find out whether that includes you.
EPSS puts the chance of exploitation in the next 30 days at 0.14%, higher than 3% of scored CVEs.
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In the Linux kernel, the following vulnerability has been resolved: wifi: cfg80211: don't free driver-owned scan requests When an interface goes down while a scan is running, cfg80211 completes the scan towards userspace and frees the scan request. However, the driver can be convinced that it owns the request, since the cancellation is (intended to be) asynchronous. The WARN_ON() in the netdev notifier was meant to catch this, but it's not actually avoidable, so it triggers and we get a UAF in scan_done(). There doesn't seem to be a great way around it, so just track that the driver is still convinced it owns the request, and then just free it on completion if it was already cancelled. Also remove the warnings since they can trigger in the intended architecture.
- CVSS
- 7.8 HIGH (v3.1, CNA)CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
- Weakness (CWE)
- Not given
- Known exploited
- Not in CISA's KEV catalog
- EPSS (exploitation in the next 30 days)
- 0.14% (percentile 3)
- Assigned by
- Linux
- NVD analysis
- Received
- Record last updated
- Oct 19, 2026
- First seen by InfoSec Signals
- Oct 9, 2026
Affected products
Linux Linux linux:linux (from the name) | from 4a58e7c38443154fce1b47910e1a9184f65c5d72 before e8c75736cfd0c6c87562cda2312e3fe5e2227955; from 4a58e7c38443154fce1b47910e1a9184f65c5d72 before cf6da29d17994865f73ca70976495ea856909c63; from 4a58e7c38443154fce1b47910e1a9184f65c5d72 before dab68a74e90b8e07f08ed9deaa5884857a3cfe89 | CNA record |
References
- https://git.kernel.org/stable/c/e8c75736cfd0c6c87562cda2312e3fe5e2227955
- https://git.kernel.org/stable/c/cf6da29d17994865f73ca70976495ea856909c63
- https://git.kernel.org/stable/c/dab68a74e90b8e07f08ed9deaa5884857a3cfe89
The CVE record on cve.org NVD's entry
The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.