CVE-2024-26897 (GCVE-0-2024-26897)
Vulnerability from cvelistv5
Published
2024-04-17 10:27
Modified
2025-05-04 12:55
Severity ?
Summary
In the Linux kernel, the following vulnerability has been resolved: wifi: ath9k: delay all of ath9k_wmi_event_tasklet() until init is complete The ath9k_wmi_event_tasklet() used in ath9k_htc assumes that all the data structures have been fully initialised by the time it runs. However, because of the order in which things are initialised, this is not guaranteed to be the case, because the device is exposed to the USB subsystem before the ath9k driver initialisation is completed. We already committed a partial fix for this in commit: 8b3046abc99e ("ath9k_htc: fix NULL pointer dereference at ath9k_htc_tx_get_packet()") However, that commit only aborted the WMI_TXSTATUS_EVENTID command in the event tasklet, pairing it with an "initialisation complete" bit in the TX struct. It seems syzbot managed to trigger the race for one of the other commands as well, so let's just move the existing synchronisation bit to cover the whole tasklet (setting it at the end of ath9k_htc_probe_device() instead of inside ath9k_tx_init()).
References
Impacted products
Vendor Product Version
Linux Linux Version: 78c8397132dd4735ac6a7b5a651302f0b9f264ad
Version: 735aefae7b68025cd04c482a940c0f6fc6797a63
Version: 8b3046abc99eefe11438090bcc4ec3a3994b55d0
Version: 8b3046abc99eefe11438090bcc4ec3a3994b55d0
Version: 8b3046abc99eefe11438090bcc4ec3a3994b55d0
Version: 8b3046abc99eefe11438090bcc4ec3a3994b55d0
Version: 8b3046abc99eefe11438090bcc4ec3a3994b55d0
Version: 7bbc1a50a7963f14048f0e54b0b73159f86d4ea3
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