Bug 2395321 (CVE-2023-53209)

Summary: CVE-2023-53209 kernel: wifi: mac80211_hwsim: Fix possible NULL dereference
Product: [Other] Security Response Reporter: OSIDB Bzimport <bzimport>
Component: vulnerabilityAssignee: Product Security DevOps Team <prodsec-dev>
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Version: unspecifiedKeywords: Security
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OS: Linux   
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Description OSIDB Bzimport 2025-09-15 15:07:19 UTC 
In the Linux kernel, the following vulnerability has been resolved:

wifi: mac80211_hwsim: Fix possible NULL dereference

In a call to mac80211_hwsim_select_tx_link() the sta pointer might
be NULL, thus need to check that it is not NULL before accessing it.
Comment 1 Jon Moroney 2025-09-15 22:02:46 UTC 
Upstream advisory:
https://lore.kernel.org/linux-cve-announce/2025091510-CVE-2023-53209-ed9e@gregkh/T