CVE-2026-97474
HighCVSS 7.4Exploitation Probability (EPSS)
Low risk2th percentile - higher than 2% of all known CVEs
Summary
In the Linux kernel, the iwlwifi driver (MLD mode) has a vulnerability causing a kernel panic during failed reconfiguration after a NIC error. The issue stems from processing asynchronous notifications from dead firmware that reference freed memory (dangling pointer). The fix purges notifications immediately upon NIC error notification.
Risk Assessment
The risk includes system crashes (kernel panic) in environments using Intel Wi-Fi cards in MLD mode, especially with simultaneous BSS and NAN connections. This can lead to network service disruption and system reboots.
Recommendation
Urgently apply a Linux kernel update containing the fix for CVE-2026-97474. Also monitor distribution security advisories and test the patch in a staging environment before production deployment.
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Original NVD description (English source)
In the Linux kernel, the following vulnerability has been resolved: wifi: iwlwifi: mld: purge async notifications upon nic error This fixes a kernel panic in reconfig failure: 1. we have a BSS connection 2. we have a NAN connection 3. FW error occurs 4. reconfig restores the BSS connection 5. however, restoring the NAN connection fails due to a FW error. 6. erroneously, ieee80211_handle_reconfig_failure is called and marks all interfaces as not-in-driver (will be fixed in a different patch). 7. mac80211 frees the links of the BSS connection but doesn't tell the driver about that, as it thinks that this vif is not in the driver. 8. in ieee80211_stop_device, *ALL* wiphy works are getting flushed (erroneously?) 9. Therefore, async_handlers_wk is being executed, processing the statistics notification that was received after we restored the BSS connection. 10. the notification handler dereferences fw_id_to_bss_conf[id], which is now a dangling pointer, as mac80211 already freed this link in (7). 11. On the first access to one of the links fields, we panic. While this can and should be fixed by removing the call to ieee80211_handle_reconfig_failure in (6), it is also not a good idea to carry and maybe handle notifications from a dead FW. We do purge the notifications when we stop the FW, but in reconfig failure we stop the FW too late, after the notifications are processed. In addition, async_handlers_wk can always be scheduled before the reconfig work. Purge the notifications immediately when transport notifies about a nic error.
Vulnerability data from NVD (NIST) · CISA KEV · EPSS