wifi: cfg80211: don't free driver-owned scan requests

MITRE NVD CVE.ORG JSON API

Summary

CVECVE-2026-98341
StatePUBLISHED
AssignerLinux
Source PriorityCVE Program / NVD first with legacy fallback
Published2026-10-06 09:18:26 UTC
Updated2026-10-19 10:18:36 UTC
DescriptionIn 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.

Risk And Classification

Primary CVSS: v3.1 7.8 HIGH from 416baaa9-dc9f-4396-8d5f-8c081fb06d67

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

EPSS: 0.001730000 probability, percentile 0.061540000 (date 2026-10-06)

VersionSourceTypeScoreSeverityVector
3.1416baaa9-dc9f-4396-8d5f-8c081fb06d67Secondary7.8HIGHCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
3.1CNADECLARED7.8HIGHCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

CVSS v3.1 Breakdown

Attack Vector
Local
Attack Complexity
Low
Privileges Required
Low
User Interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA Linux Linux affected 4a58e7c38443154fce1b47910e1a9184f65c5d72 e8c75736cfd0c6c87562cda2312e3fe5e2227955 git Not specified
CNA Linux Linux affected 4a58e7c38443154fce1b47910e1a9184f65c5d72 cf6da29d17994865f73ca70976495ea856909c63 git Not specified
CNA Linux Linux affected 4a58e7c38443154fce1b47910e1a9184f65c5d72 dab68a74e90b8e07f08ed9deaa5884857a3cfe89 git Not specified
CNA Linux Linux affected 3.14 Not specified
CNA Linux Linux unaffected 3.14 semver Not specified
CNA Linux Linux unaffected 6.18.54 6.18.* semver Not specified
CNA Linux Linux unaffected 7.2.8 7.2.* semver Not specified
CNA Linux Linux unaffected 7.3 * original_commit_for_fix Not specified

References

ReferenceSourceLinkTags
git.kernel.org/stable/c/dab68a74e90b8e07f08ed9deaa5884857a3cfe89 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
git.kernel.org/stable/c/e8c75736cfd0c6c87562cda2312e3fe5e2227955 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
git.kernel.org/stable/c/cf6da29d17994865f73ca70976495ea856909c63 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
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