Bug 2482563 (CVE-2026-46152)

Summary:	CVE-2026-46152 kernel: wifi: mac80211: drop stray 'static' from fast-RX rx_result
Product:	[Other] Security Response	Reporter:	OSIDB Bzimport <bzimport>
Component:	vulnerability	Assignee:	Product Security <prodsec-ir-bot>
Status:	NEW ---	QA Contact:
Severity:	high	Docs Contact:
Priority:	high
Version:	unspecified	CC:	rhel-process-autobot, watson-tool-maintainers
Target Milestone:	---	Keywords:	Security
Target Release:	---
Hardware:	All
OS:	Linux
Whiteboard:
Fixed In Version:		Doc Type:	---
Doc Text:	A flaw was found in the Linux kernel's Wi-Fi (mac80211) subsystem. The `ieee80211_invoke_fast_rx()` function uses a static variable for `rx_result`, which is shared across concurrent calls. This can lead to incorrect processing of Wi-Fi packets, where a packet might be mishandled or its status incorrectly reported. Such issues can result in unexpected network behavior or a denial of service within the wireless communication.	Story Points:	---
Clone Of:		Environment:
Last Closed:		Type:	---
Regression:	---	Mount Type:	---
Documentation:	---	CRM:
Verified Versions:		Category:	---
oVirt Team:	---	RHEL 7.3 requirements from Atomic Host:
Cloudforms Team:	---	Target Upstream Version:
Embargoed:

Description OSIDB Bzimport 2026-05-28 11:03:26 UTC

In the Linux kernel, the following vulnerability has been resolved:

wifi: mac80211: drop stray 'static' from fast-RX rx_result

ieee80211_invoke_fast_rx() is documented as safe for parallel RX, but
its per-invocation rx_result is declared static. Concurrent callers then
share one instance and can overwrite each other's result between
ieee80211_rx_mesh_data() and the switch on res.

That can make a packet that was queued or consumed by
ieee80211_rx_mesh_data() fall through into ieee80211_rx_8023(), or make
a packet that should continue return as queued.

Make res an automatic variable so each invocation keeps its own result.

Comment 1 Keith Grant 2026-05-28 16:09:34 UTC

Upstream advisory:
https://lore.kernel.org/linux-cve-announce/2026052822-CVE-2026-46152-ec8a@gregkh/T

Comment 5 errata-xmlrpc 2026-06-16 18:29:42 UTC

This issue has been addressed in the following products:

  Red Hat Enterprise Linux 8

Via RHSA-2026:26428 https://access.redhat.com/errata/RHSA-2026:26428

Comment 6 errata-xmlrpc 2026-06-16 18:55:36 UTC

This issue has been addressed in the following products:

  Red Hat Enterprise Linux 8

Via RHSA-2026:26427 https://access.redhat.com/errata/RHSA-2026:26427

Comment 7 errata-xmlrpc 2026-06-19 23:22:02 UTC

This issue has been addressed in the following products:

  Red Hat Enterprise Linux 10

Via RHSA-2026:27288 https://access.redhat.com/errata/RHSA-2026:27288

Comment 8 errata-xmlrpc 2026-06-22 08:29:11 UTC

This issue has been addressed in the following products:

  Red Hat Enterprise Linux 9

Via RHSA-2026:27789 https://access.redhat.com/errata/RHSA-2026:27789

Comment 10 errata-xmlrpc 2026-07-08 14:51:33 UTC

This issue has been addressed in the following products:

  Red Hat Enterprise Linux 9.4 Update Services for SAP Solutions

Via RHSA-2026:36767 https://access.redhat.com/errata/RHSA-2026:36767

Comment 12 errata-xmlrpc 2026-07-13 12:50:42 UTC

This issue has been addressed in the following products:

  Red Hat Enterprise Linux 9.6 Extended Update Support

Via RHSA-2026:38902 https://access.redhat.com/errata/RHSA-2026:38902