CVE-2022-50551: In the Linux kernel, the following vulnerability has been resolved:  wifi: brcmfmac: Fix potential shift-out-of-bounds in brcmf_fw_alloc_request()  This patch fixes a shift-out-of-bounds in brcmfmac that occurs in BIT(chiprev) when a 'chiprev' provided by the device is too large. It should also not be equal to or greater than BITS_PER_TYPE(u32) as we do bitwise AND with a u32 variable and BIT(chiprev). The patch adds a check that makes the function return NULL if that is the case. Note that the NULL case is later handled by the bus-specific caller, brcmf_usb_probe_cb() or brcmf_usb_reset_resume(), for example.  Found by a modified version of syzkaller.  UBSAN: shift-out-of-bounds in drivers/net/wireless/broadcom/brcm80211/brcmfmac/firmware.c shift exponent 151055786 is too large for 64-bit type 'long unsigned int' CPU: 0 PID: 1885 Comm: kworker/0:2 Tainted: G           O      5.14.0+ #132 Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.12.1-0-ga5cab58e9a3f-prebuilt.qemu.org 04/01/2014 Workqueue: usb_hub_wq hub_event Call Trace:  dump_stack_lvl+0x57/0x7d  ubsan_epilogue+0x5/0x40  __ubsan_handle_shift_out_of_bounds.cold+0x53/0xdb  ? lock_chain_count+0x20/0x20  brcmf_fw_alloc_request.cold+0x19/0x3ea  ? brcmf_fw_get_firmwares+0x250/0x250  ? brcmf_usb_ioctl_resp_wait+0x1a7/0x1f0  brcmf_usb_get_fwname+0x114/0x1a0  ? brcmf_usb_reset_resume+0x120/0x120  ? number+0x6c4/0x9a0  brcmf_c_process_clm_blob+0x168/0x590  ? put_dec+0x90/0x90  ? enable_ptr_key_workfn+0x20/0x20  ? brcmf_common_pd_remove+0x50/0x50  ? rcu_read_lock_sched_held+0xa1/0xd0  brcmf_c_preinit_dcmds+0x673/0xc40  ? brcmf_c_set_joinpref_default+0x100/0x100  ? rcu_read_lock_sched_held+0xa1/0xd0  ? rcu_read_lock_bh_held+0xb0/0xb0  ? lock_acquire+0x19d/0x4e0  ? find_held_lock+0x2d/0x110  ? brcmf_usb_deq+0x1cc/0x260  ? mark_held_locks+0x9f/0xe0  ? lockdep_hardirqs_on_prepare+0x273/0x3e0  ? _raw_spin_unlock_irqrestore+0x47/0x50  ? trace_hardirqs_on+0x1c/0x120  ? brcmf_usb_deq+0x1a7/0x260  ? brcmf_usb_rx_fill_all+0x5a/0xf0  brcmf_attach+0x246/0xd40  ? wiphy_new_nm+0x1476/0x1d50  ? kmemdup+0x30/0x40  brcmf_usb_probe+0x12de/0x1690  ? brcmf_usbdev_qinit.constprop.0+0x470/0x470  usb_probe_interface+0x25f/0x710  really_probe+0x1be/0xa90  __driver_probe_device+0x2ab/0x460  ? usb_match_id.part.0+0x88/0xc0  driver_probe_device+0x49/0x120  __device_attach_driver+0x18a/0x250  ? driver_allows_async_probing+0x120/0x120  bus_for_each_drv+0x123/0x1a0  ? bus_rescan_devices+0x20/0x20  ? lockdep_hardirqs_on_prepare+0x273/0x3e0  ? trace_hardirqs_on+0x1c/0x120  __device_attach+0x207/0x330  ? device_bind_driver+0xb0/0xb0  ? kobject_uevent_env+0x230/0x12c0  bus_probe_device+0x1a2/0x260  device_add+0xa61/0x1ce0  ? __mutex_unlock_slowpath+0xe7/0x660  ? __fw_devlink_link_to_suppliers+0x550/0x550  usb_set_configuration+0x984/0x1770  ? kernfs_create_link+0x175/0x230  usb_generic_driver_probe+0x69/0x90  usb_probe_device+0x9c/0x220  really_probe+0x1be/0xa90  __driver_probe_device+0x2ab/0x460  driver_probe_device+0x49/0x120  __device_attach_driver+0x18a/0x250  ? driver_allows_async_probing+0x120/0x120  bus_for_each_drv+0x123/0x1a0  ? bus_rescan_devices+0x20/0x20  ? lockdep_hardirqs_on_prepare+0x273/0x3e0  ? trace_hardirqs_on+0x1c/0x120  __device_attach+0x207/0x330  ? device_bind_driver+0xb0/0xb0  ? kobject_uevent_env+0x230/0x12c0  bus_probe_device+0x1a2/0x260  device_add+0xa61/0x1ce0  ? __fw_devlink_link_to_suppliers+0x550/0x550  usb_new_device.cold+0x463/0xf66  ? hub_disconnect+0x400/0x400  ? _raw_spin_unlock_irq+0x24/0x30  hub_event+0x10d5/0x3330  ? hub_port_debounce+0x280/0x280  ? __lock_acquire+0x1671/0x5790  ? wq_calc_node_cpumask+0x170/0x2a0  ? lock_release+0x640/0x640  ? rcu_read_lock_sched_held+0xa1/0xd0  ? rcu_read_lock_bh_held+0xb0/0xb0  ? lockdep_hardirqs_on_prepare+0x273/0x3e0  process_one_work+0x873/0x13e0  ? lock_release+0x640/0x640  ? pwq_dec_nr_in_flight+0x320/0x320  ? rwlock_bug.part.0+0x90/0x90  worker_thread+0x8b/0xd10  ? __kthread_parkme+0xd9/0x1d0  ? pr ---truncated---