CVE-2023-53582: In the Linux kernel, the following vulnerability has been resolved:  wifi: brcmfmac: ensure CLM version is null-terminated to prevent stack-out-of-bounds  Fix a stack-out-of-bounds read in brcmfmac that occurs when 'buf' that is not null-terminated is passed as an argument of strreplace() in brcmf_c_preinit_dcmds(). This buffer is filled with a CLM version string by memcpy() in brcmf_fil_iovar_data_get(). Ensure buf is null-terminated.  Found by a modified version of syzkaller.  [   33.004414][ T1896] brcmfmac: brcmf_c_process_clm_blob: no clm_blob available (err=-2), device may have limited channels available [   33.013486][ T1896] brcmfmac: brcmf_c_preinit_dcmds: Firmware: BCM43236/3 wl0: Nov 30 2011 17:33:42 version 5.90.188.22 [   33.021554][ T1896] ================================================================== [   33.022379][ T1896] BUG: KASAN: stack-out-of-bounds in strreplace+0xf2/0x110 [   33.023122][ T1896] Read of size 1 at addr ffffc90001d6efc8 by task kworker/0:2/1896 [   33.023852][ T1896] [   33.024096][ T1896] CPU: 0 PID: 1896 Comm: kworker/0:2 Tainted: G           O      5.14.0+ #132 [   33.024927][ T1896] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.12.1-0-ga5cab58e9a3f-prebuilt.qemu.org 04/01/2014 [   33.026065][ T1896] Workqueue: usb_hub_wq hub_event [   33.026581][ T1896] Call Trace: [   33.026896][ T1896]  dump_stack_lvl+0x57/0x7d [   33.027372][ T1896]  print_address_description.constprop.0.cold+0xf/0x334 [   33.028037][ T1896]  ? strreplace+0xf2/0x110 [   33.028403][ T1896]  ? strreplace+0xf2/0x110 [   33.028807][ T1896]  kasan_report.cold+0x83/0xdf [   33.029283][ T1896]  ? strreplace+0xf2/0x110 [   33.029666][ T1896]  strreplace+0xf2/0x110 [   33.029966][ T1896]  brcmf_c_preinit_dcmds+0xab1/0xc40 [   33.030351][ T1896]  ? brcmf_c_set_joinpref_default+0x100/0x100 [   33.030787][ T1896]  ? rcu_read_lock_sched_held+0xa1/0xd0 [   33.031223][ T1896]  ? rcu_read_lock_bh_held+0xb0/0xb0 [   33.031661][ T1896]  ? lock_acquire+0x19d/0x4e0 [   33.032091][ T1896]  ? find_held_lock+0x2d/0x110 [   33.032605][ T1896]  ? brcmf_usb_deq+0x1a7/0x260 [   33.033087][ T1896]  ? brcmf_usb_rx_fill_all+0x5a/0xf0 [   33.033582][ T1896]  brcmf_attach+0x246/0xd40 [   33.034022][ T1896]  ? wiphy_new_nm+0x1476/0x1d50 [   33.034383][ T1896]  ? kmemdup+0x30/0x40 [   33.034722][ T1896]  brcmf_usb_probe+0x12de/0x1690 [   33.035223][ T1896]  ? brcmf_usbdev_qinit.constprop.0+0x470/0x470 [   33.035833][ T1896]  usb_probe_interface+0x25f/0x710 [   33.036315][ T1896]  really_probe+0x1be/0xa90 [   33.036656][ T1896]  __driver_probe_device+0x2ab/0x460 [   33.037026][ T1896]  ? usb_match_id.part.0+0x88/0xc0 [   33.037383][ T1896]  driver_probe_device+0x49/0x120 [   33.037790][ T1896]  __device_attach_driver+0x18a/0x250 [   33.038300][ T1896]  ? driver_allows_async_probing+0x120/0x120 [   33.038986][ T1896]  bus_for_each_drv+0x123/0x1a0 [   33.039906][ T1896]  ? bus_rescan_devices+0x20/0x20 [   33.041412][ T1896]  ? lockdep_hardirqs_on_prepare+0x273/0x3e0 [   33.041861][ T1896]  ? trace_hardirqs_on+0x1c/0x120 [   33.042330][ T1896]  __device_attach+0x207/0x330 [   33.042664][ T1896]  ? device_bind_driver+0xb0/0xb0 [   33.043026][ T1896]  ? kobject_uevent_env+0x230/0x12c0 [   33.043515][ T1896]  bus_probe_device+0x1a2/0x260 [   33.043914][ T1896]  device_add+0xa61/0x1ce0 [   33.044227][ T1896]  ? __mutex_unlock_slowpath+0xe7/0x660 [   33.044891][ T1896]  ? __fw_devlink_link_to_suppliers+0x550/0x550 [   33.045531][ T1896]  usb_set_configuration+0x984/0x1770 [   33.046051][ T1896]  ? kernfs_create_link+0x175/0x230 [   33.046548][ T1896]  usb_generic_driver_probe+0x69/0x90 [   33.046931][ T1896]  usb_probe_device+0x9c/0x220 [   33.047434][ T1896]  really_probe+0x1be/0xa90 [   33.047760][ T1896]  __driver_probe_device+0x2ab/0x460 [   33.048134][ T1896]  driver_probe_device+0x49/0x120 [   33.048516][ T1896]  __device_attach_driver+0x18a/0x250 [   33.048910][ T1896]  ? driver_allows_async_probing+0x120/0x120 ---truncated---