Bug 2451244 (CVE-2026-23373)

Summary: CVE-2026-23373 kernel: wifi: rsi: Don't default to -EOPNOTSUPP in rsi_mac80211_config
Product: [Other] Security Response Reporter: OSIDB Bzimport <bzimport>
Component: vulnerabilityAssignee: Product Security <prodsec-ir-bot>
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OS: Linux   
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A flaw was found in the Linux kernel's wifi: rsi module. The `rsi_mac80211_config` function's failure to default to a zero value can trigger a `WARN_ON` in the `ieee80211_hw_conf_init` function. This unexpected driver behavior may lead to system instability or other unforeseen operational issues.
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Description OSIDB Bzimport 2026-03-25 11:06:42 UTC 
In the Linux kernel, the following vulnerability has been resolved:

wifi: rsi: Don't default to -EOPNOTSUPP in rsi_mac80211_config

This triggers a WARN_ON in ieee80211_hw_conf_init and isn't the expected
behavior from the driver - other drivers default to 0 too.
Comment 1 Alexander B 2026-03-25 13:43:33 UTC 
Upstream advisory:
https://lore.kernel.org/linux-cve-announce/2026032541-CVE-2026-23373-0203@gregkh/T