CVE-2024-53188

In the Linux kernel, the following vulnerability has been resolved:<br /> <br /> wifi: ath12k: fix crash when unbinding<br /> <br /> If there is an error during some initialization related to firmware,<br /> the function ath12k_dp_cc_cleanup is called to release resources.<br /> However this is released again when the device is unbinded (ath12k_pci),<br /> and we get:<br /> BUG: kernel NULL pointer dereference, address: 0000000000000020<br /> at RIP: 0010:ath12k_dp_cc_cleanup.part.0+0xb6/0x500 [ath12k]<br /> Call Trace:<br /> ath12k_dp_cc_cleanup<br /> ath12k_dp_free<br /> ath12k_core_deinit<br /> ath12k_pci_remove<br /> ...<br /> <br /> The issue is always reproducible from a VM because the MSI addressing<br /> initialization is failing.<br /> <br /> In order to fix the issue, just set to NULL the released structure in<br /> ath12k_dp_cc_cleanup at the end.