Jeongjun Park <aha310510@xxxxxxxxx> wrote: > I found the following bug in my fuzzer: > > UBSAN: array-index-out-of-bounds in drivers/net/wireless/ath/ath9k/htc_hst.c:26:51 > index 255 is out of range for type 'htc_endpoint [22]' > CPU: 0 UID: 0 PID: 8 Comm: kworker/0:0 Not tainted 6.11.0-rc6-dirty #14 > Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.15.0-1 04/01/2014 > Workqueue: events request_firmware_work_func > Call Trace: > <TASK> > dump_stack_lvl+0x180/0x1b0 > __ubsan_handle_out_of_bounds+0xd4/0x130 > htc_issue_send.constprop.0+0x20c/0x230 > ? _raw_spin_unlock_irqrestore+0x3c/0x70 > ath9k_wmi_cmd+0x41d/0x610 > ? mark_held_locks+0x9f/0xe0 > ... > > Since this bug has been confirmed to be caused by insufficient verification > of conn_rsp_epid, I think it would be appropriate to add a range check for > conn_rsp_epid to htc_connect_service() to prevent the bug from occurring. > > Fixes: fb9987d0f748 ("ath9k_htc: Support for AR9271 chipset.") > Signed-off-by: Jeongjun Park <aha310510@xxxxxxxxx> > Acked-by: Toke Høiland-Jørgensen <toke@xxxxxxx> > Signed-off-by: Kalle Valo <quic_kvalo@xxxxxxxxxxx> Patch applied to ath-next branch of ath.git, thanks. 8619593634cb wifi: ath9k: add range check for conn_rsp_epid in htc_connect_service() -- https://patchwork.kernel.org/project/linux-wireless/patch/20240909103855.68006-1-aha310510@xxxxxxxxx/ https://wireless.wiki.kernel.org/en/developers/documentation/submittingpatches https://docs.kernel.org/process/submitting-patches.html