CVE-2023-52594

In the Linux kernel, the following vulnerability has been resolved:<br /> <br /> wifi: ath9k: Fix potential array-index-out-of-bounds read in ath9k_htc_txstatus()<br /> <br /> Fix an array-index-out-of-bounds read in ath9k_htc_txstatus(). The bug<br /> occurs when txs-&gt;cnt, data from a URB provided by a USB device, is<br /> bigger than the size of the array txs-&gt;txstatus, which is<br /> HTC_MAX_TX_STATUS. WARN_ON() already checks it, but there is no bug<br /> handling code after the check. Make the function return if that is the<br /> case.<br /> <br /> Found by a modified version of syzkaller.<br /> <br /> UBSAN: array-index-out-of-bounds in htc_drv_txrx.c<br /> index 13 is out of range for type &amp;#39;__wmi_event_txstatus [12]&amp;#39;<br /> Call Trace:<br /> ath9k_htc_txstatus<br /> ath9k_wmi_event_tasklet<br /> tasklet_action_common<br /> __do_softirq<br /> irq_exit_rxu<br /> sysvec_apic_timer_interrupt