Bug 2436806 (CVE-2026-23040)

Summary:	CVE-2026-23040 kernel: wifi: mac80211_hwsim: fix typo in frequency notification
Product:	[Other] Security Response	Reporter:	OSIDB Bzimport <bzimport>
Component:	vulnerability	Assignee:	Product Security DevOps Team <prodsec-dev>
Status:	NEW ---	QA Contact:
Severity:	medium	Docs Contact:
Priority:	medium
Version:	unspecified	Keywords:	Security
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Hardware:	All
OS:	Linux
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oVirt Team:	---	RHEL 7.3 requirements from Atomic Host:
Cloudforms Team:	---	Target Upstream Version:
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Description OSIDB Bzimport 2026-02-04 17:04:17 UTC

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

wifi: mac80211_hwsim: fix typo in frequency notification

The NAN notification is for 5745 MHz which corresponds to channel 149
and not 5475 which is not actually a valid channel. This could result in
a NULL pointer dereference in cfg80211_next_nan_dw_notif.

Comment 1 Jon Moroney 2026-02-04 21:10:36 UTC

Upstream advisory:
https://lore.kernel.org/linux-cve-announce/2026020438-CVE-2026-23040-1980@gregkh/T

Comment 4 errata-xmlrpc 2026-05-19 08:34:58 UTC

This issue has been addressed in the following products:

  Red Hat Enterprise Linux 10

Via RHSA-2026:18134 https://access.redhat.com/errata/RHSA-2026:18134

Comment 5 errata-xmlrpc 2026-05-19 12:49:16 UTC

This issue has been addressed in the following products:

  Red Hat Enterprise Linux 9

Via RHSA-2026:18587 https://access.redhat.com/errata/RHSA-2026:18587