UBSAN: array-index-out-of-bounds in rtl8188eu/core/rtw_wlan_util.c when loading rtl8818eu wifi usb adaptor

[sardChen]

When executing fuzzing test for loading rtl8818eu, I found four array-index-out-of-bounds bugs reported by UBSAN in dmesg logs:

[   72.895184] R8188EU: INFO indicate disassoc
[   73.073323] ================================================================================
[   73.073358] UBSAN: array-index-out-of-bounds in /home/sandy/workplace/wifiTool/driver/rtl8188eu/core/rtw_wlan_util.c:770:48
[   73.073376] index 1 is out of range for type 'u8 [1]'
[   73.073389] CPU: 6 PID: 0 Comm: swapper/6 Tainted: G           OE      6.6.58 #1
[   73.073402] Hardware name: Gigabyte Technology Co., Ltd. B660M GAMING AC DDR4/B660M GAMING AC DDR4, BIOS F4 01/17/2022
[   73.073410] Call Trace:
[   73.073415]  <IRQ>
[   73.073423]  dump_stack_lvl+0x48/0x70
[   73.073446]  dump_stack+0x10/0x20
[   73.073458]  __ubsan_handle_out_of_bounds+0xa2/0x100
[   73.073474]  HT_caps_handler+0x17e/0x5b0 [8188eu]
[   73.073700]  ? __pfx_HT_caps_handler+0x10/0x10 [8188eu]
[   73.073870]  OnAssocRsp+0x4f0/0x5a0 [8188eu]
[   73.074066]  _mgt_dispatcher+0x128/0x190 [8188eu]
[   73.074241]  ? __pfx__mgt_dispatcher+0x10/0x10 [8188eu]
[   73.074401]  ? _raw_spin_lock_bh+0x86/0xf0
[   73.074415]  ? __pfx__raw_spin_lock_bh+0x10/0x10
[   73.074430]  mgt_dispatcher+0x5d6/0x720 [8188eu]
[   73.074587]  ? rtw_get_stainfo+0x30c/0x370 [8188eu]
[   73.074790]  ? __pfx_mgt_dispatcher+0x10/0x10 [8188eu]
[   73.074966]  ? __pfx__raw_spin_lock_bh+0x10/0x10
[   73.074981]  rtw_recv_entry+0x1a4e/0x49f0 [8188eu]
[   73.075178]  ? __pfx_rtw_recv_entry+0x10/0x10 [8188eu]
[   73.075348]  ? update_recvframe_attrib_88e+0x7e0/0x860 [8188eu]
[   73.075525]  rtl8188eu_recv_tasklet+0x10f3/0x13e0 [8188eu]
[   73.075693]  tasklet_action_common.constprop.0+0x275/0x670
[   73.075713]  tasklet_action+0x22/0x30
[   73.075726]  handle_softirqs+0x192/0x5d0
[   73.075742]  __irq_exit_rcu+0x15c/0x1b0
[   73.075756]  irq_exit_rcu+0xe/0x20
[   73.075769]  common_interrupt+0xa4/0xb0
[   73.075780]  </IRQ>
[   73.075785]  <TASK>
[   73.075790]  asm_common_interrupt+0x27/0x40
[   73.075800] RIP: 0010:cpuidle_enter_state+0x1df/0x520
[   73.075813] Code: 01 73 dd 48 83 c4 28 44 89 f0 5b 41 5c 41 5d 41 5e 41 5f 5d 31 d2 31 c9 31 f6 31 ff 45 31 c0 c3 cc cc cc cc fb 0f 1f 44 00 00 <45> 85 f6 0f 89 06 ff ff ff 48 c7 43 18 00 00 00 00 49 83 fd 09 0f
[   73.075824] RSP: 0000:ffff888100da7d30 EFLAGS: 00000246
[   73.075838] RAX: 0000000000000000 RBX: ffff88885c34ffe0 RCX: 0000000000000000
[   73.075847] RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000
[   73.075854] RBP: ffff888100da7d80 R08: 0000000000000000 R09: 0000000000000000
[   73.075861] R10: 0000000000000000 R11: 0000000000000000 R12: ffffffffb48627c0
[   73.075868] R13: 0000000000000004 R14: 0000000000000004 R15: 000000110380cbfa
[   73.075883]  cpuidle_enter+0x4f/0xb0
[   73.075898]  call_cpuidle+0x47/0xd0
[   73.075912]  do_idle+0x372/0x460
[   73.075927]  ? __pfx_do_idle+0x10/0x10
[   73.075941]  ? do_idle+0xd/0x460
[   73.075956]  cpu_startup_entry+0x58/0x70
[   73.075970]  start_secondary+0x220/0x2b0
[   73.075982]  ? __pfx_start_secondary+0x10/0x10
[   73.075995]  secondary_startup_64_no_verify+0x18f/0x19b
[   73.076014]  </TASK>
[   73.076025] ================================================================================
[   73.076036] ================================================================================
[   73.076044] UBSAN: array-index-out-of-bounds in /home/sandy/workplace/wifiTool/driver/rtl8188eu/core/rtw_wlan_util.c:773:75
[   73.076058] index 2 is out of range for type 'u8 [1]'
[   73.076068] CPU: 6 PID: 0 Comm: swapper/6 Tainted: G           OE      6.6.58 #1
[   73.076079] Hardware name: Gigabyte Technology Co., Ltd. B660M GAMING AC DDR4/B660M GAMING AC DDR4, BIOS F4 01/17/2022
[   73.076086] Call Trace:
[   73.076091]  <IRQ>
[   73.076096]  dump_stack_lvl+0x48/0x70
[   73.076110]  dump_stack+0x10/0x20
[   73.076122]  __ubsan_handle_out_of_bounds+0xa2/0x100
[   73.076135]  HT_caps_handler+0x295/0x5b0 [8188eu]
[   73.076328]  ? __pfx_HT_caps_handler+0x10/0x10 [8188eu]
[   73.076492]  OnAssocRsp+0x4f0/0x5a0 [8188eu]
[   73.076684]  _mgt_dispatcher+0x128/0x190 [8188eu]
[   73.076858]  ? __pfx__mgt_dispatcher+0x10/0x10 [8188eu]
[   73.077012]  ? _raw_spin_lock_bh+0x86/0xf0
[   73.077024]  ? __pfx__raw_spin_lock_bh+0x10/0x10
[   73.077039]  mgt_dispatcher+0x5d6/0x720 [8188eu]
[   73.077194]  ? rtw_get_stainfo+0x30c/0x370 [8188eu]
[   73.077379]  ? __pfx_mgt_dispatcher+0x10/0x10 [8188eu]
[   73.077549]  ? __pfx__raw_spin_lock_bh+0x10/0x10
[   73.077564]  rtw_recv_entry+0x1a4e/0x49f0 [8188eu]
[   73.077755]  ? __pfx_rtw_recv_entry+0x10/0x10 [8188eu]
[   73.077926]  ? update_recvframe_attrib_88e+0x7e0/0x860 [8188eu]
[   73.078099]  rtl8188eu_recv_tasklet+0x10f3/0x13e0 [8188eu]
[   73.078267]  tasklet_action_common.constprop.0+0x275/0x670
[   73.078285]  tasklet_action+0x22/0x30
[   73.078298]  handle_softirqs+0x192/0x5d0
[   73.078314]  __irq_exit_rcu+0x15c/0x1b0
[   73.078327]  irq_exit_rcu+0xe/0x20
[   73.078340]  common_interrupt+0xa4/0xb0
[   73.078349]  </IRQ>
[   73.078354]  <TASK>
[   73.078360]  asm_common_interrupt+0x27/0x40
[   73.078363] RIP: 0010:cpuidle_enter_state+0x1df/0x520
[   73.078365] Code: 01 73 dd 48 83 c4 28 44 89 f0 5b 41 5c 41 5d 41 5e 41 5f 5d 31 d2 31 c9 31 f6 31 ff 45 31 c0 c3 cc cc cc cc fb 0f 1f 44 00 00 <45> 85 f6 0f 89 06 ff ff ff 48 c7 43 18 00 00 00 00 49 83 fd 09 0f
[   73.078367] RSP: 0000:ffff888100da7d30 EFLAGS: 00000246
[   73.078369] RAX: 0000000000000000 RBX: ffff88885c34ffe0 RCX: 0000000000000000
[   73.078370] RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000
[   73.078372] RBP: ffff888100da7d80 R08: 0000000000000000 R09: 0000000000000000
[   73.078373] R10: 0000000000000000 R11: 0000000000000000 R12: ffffffffb48627c0
[   73.078374] R13: 0000000000000004 R14: 0000000000000004 R15: 000000110380cbfa
[   73.078377]  cpuidle_enter+0x4f/0xb0
[   73.078379]  call_cpuidle+0x47/0xd0
[   73.078382]  do_idle+0x372/0x460
[   73.078385]  ? __pfx_do_idle+0x10/0x10
[   73.078387]  ? do_idle+0xd/0x460
[   73.078390]  cpu_startup_entry+0x58/0x70
[   73.078393]  start_secondary+0x220/0x2b0
[   73.078395]  ? __pfx_start_secondary+0x10/0x10
[   73.078397]  secondary_startup_64_no_verify+0x18f/0x19b
[   73.078400]  </TASK>
[   73.078402] ================================================================================
[   73.078404] ================================================================================
[   73.078406] UBSAN: array-index-out-of-bounds in /home/sandy/workplace/wifiTool/driver/rtl8188eu/core/rtw_wlan_util.c:778:76
[   73.078408] index 2 is out of range for type 'u8 [1]'
[   73.078410] CPU: 6 PID: 0 Comm: swapper/6 Tainted: G           OE      6.6.58 #1
[   73.078412] Hardware name: Gigabyte Technology Co., Ltd. B660M GAMING AC DDR4/B660M GAMING AC DDR4, BIOS F4 01/17/2022
[   73.078413] Call Trace:
[   73.078414]  <IRQ>
[   73.078415]  dump_stack_lvl+0x48/0x70
[   73.078418]  dump_stack+0x10/0x20
[   73.078420]  __ubsan_handle_out_of_bounds+0xa2/0x100
[   73.078422]  HT_caps_handler+0x306/0x5b0 [8188eu]
[   73.078461]  ? __pfx_HT_caps_handler+0x10/0x10 [8188eu]
[   73.078495]  OnAssocRsp+0x4f0/0x5a0 [8188eu]
[   73.078531]  _mgt_dispatcher+0x128/0x190 [8188eu]
[   73.078563]  ? __pfx__mgt_dispatcher+0x10/0x10 [8188eu]
[   73.078593]  ? _raw_spin_lock_bh+0x86/0xf0
[   73.078595]  ? __pfx__raw_spin_lock_bh+0x10/0x10
[   73.078598]  mgt_dispatcher+0x5d6/0x720 [8188eu]
[   73.078627]  ? rtw_get_stainfo+0x30c/0x370 [8188eu]
[   73.078664]  ? __pfx_mgt_dispatcher+0x10/0x10 [8188eu]
[   73.078695]  ? __pfx__raw_spin_lock_bh+0x10/0x10
[   73.078698]  rtw_recv_entry+0x1a4e/0x49f0 [8188eu]
[   73.078735]  ? __pfx_rtw_recv_entry+0x10/0x10 [8188eu]
[   73.078766]  ? update_recvframe_attrib_88e+0x7e0/0x860 [8188eu]
[   73.078799]  rtl8188eu_recv_tasklet+0x10f3/0x13e0 [8188eu]
[   73.078831]  tasklet_action_common.constprop.0+0x275/0x670
[   73.078835]  tasklet_action+0x22/0x30
[   73.078837]  handle_softirqs+0x192/0x5d0
[   73.078840]  __irq_exit_rcu+0x15c/0x1b0
[   73.078843]  irq_exit_rcu+0xe/0x20
[   73.078845]  common_interrupt+0xa4/0xb0
[   73.078847]  </IRQ>
[   73.078848]  <TASK>
[   73.078849]  asm_common_interrupt+0x27/0x40
[   73.078851] RIP: 0010:cpuidle_enter_state+0x1df/0x520
[   73.078852] Code: 01 73 dd 48 83 c4 28 44 89 f0 5b 41 5c 41 5d 41 5e 41 5f 5d 31 d2 31 c9 31 f6 31 ff 45 31 c0 c3 cc cc cc cc fb 0f 1f 44 00 00 <45> 85 f6 0f 89 06 ff ff ff 48 c7 43 18 00 00 00 00 49 83 fd 09 0f
[   73.078854] RSP: 0000:ffff888100da7d30 EFLAGS: 00000246
[   73.078856] RAX: 0000000000000000 RBX: ffff88885c34ffe0 RCX: 0000000000000000
[   73.078857] RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000
[   73.078858] RBP: ffff888100da7d80 R08: 0000000000000000 R09: 0000000000000000
[   73.078860] R10: 0000000000000000 R11: 0000000000000000 R12: ffffffffb48627c0
[   73.078861] R13: 0000000000000004 R14: 0000000000000004 R15: 000000110380cbfa
[   73.078864]  cpuidle_enter+0x4f/0xb0
[   73.078866]  call_cpuidle+0x47/0xd0
[   73.078868]  do_idle+0x372/0x460
[   73.078871]  ? __pfx_do_idle+0x10/0x10
[   73.078874]  ? do_idle+0xd/0x460
[   73.078877]  cpu_startup_entry+0x58/0x70
[   73.078879]  start_secondary+0x220/0x2b0
[   73.078881]  ? __pfx_start_secondary+0x10/0x10
[   73.078884]  secondary_startup_64_no_verify+0x18f/0x19b
[   73.078887]  </TASK>
[   73.078888] ================================================================================
[   73.078890] ================================================================================
[   73.078892] UBSAN: array-index-out-of-bounds in /home/sandy/workplace/wifiTool/driver/rtl8188eu/core/rtw_wlan_util.c:781:34
[   73.078894] index 2 is out of range for type 'u8 [1]'
[   73.078896] CPU: 6 PID: 0 Comm: swapper/6 Tainted: G           OE      6.6.58 #1
[   73.078898] Hardware name: Gigabyte Technology Co., Ltd. B660M GAMING AC DDR4/B660M GAMING AC DDR4, BIOS F4 01/17/2022
[   73.078899] Call Trace:
[   73.078900]  <IRQ>
[   73.078901]  dump_stack_lvl+0x48/0x70
[   73.078903]  dump_stack+0x10/0x20
[   73.078906]  __ubsan_handle_out_of_bounds+0xa2/0x100
[   73.078908]  HT_caps_handler+0x32c/0x5b0 [8188eu]
[   73.078944]  ? __pfx_HT_caps_handler+0x10/0x10 [8188eu]
[   73.078976]  OnAssocRsp+0x4f0/0x5a0 [8188eu]
[   73.079012]  _mgt_dispatcher+0x128/0x190 [8188eu]
[   73.079044]  ? __pfx__mgt_dispatcher+0x10/0x10 [8188eu]
[   73.079074]  ? _raw_spin_lock_bh+0x86/0xf0
[   73.079077]  ? __pfx__raw_spin_lock_bh+0x10/0x10
[   73.079080]  mgt_dispatcher+0x5d6/0x720 [8188eu]
[   73.079109]  ? rtw_get_stainfo+0x30c/0x370 [8188eu]
[   73.079147]  ? __pfx_mgt_dispatcher+0x10/0x10 [8188eu]
[   73.079178]  ? __pfx__raw_spin_lock_bh+0x10/0x10
[   73.079181]  rtw_recv_entry+0x1a4e/0x49f0 [8188eu]
[   73.079218]  ? __pfx_rtw_recv_entry+0x10/0x10 [8188eu]
[   73.079251]  ? update_recvframe_attrib_88e+0x7e0/0x860 [8188eu]
[   73.079284]  rtl8188eu_recv_tasklet+0x10f3/0x13e0 [8188eu]
[   73.079316]  tasklet_action_common.constprop.0+0x275/0x670
[   73.079319]  tasklet_action+0x22/0x30
[   73.079322]  handle_softirqs+0x192/0x5d0
[   73.079325]  __irq_exit_rcu+0x15c/0x1b0
[   73.079327]  irq_exit_rcu+0xe/0x20
[   73.079330]  common_interrupt+0xa4/0xb0
[   73.079332]  </IRQ>
[   73.079332]  <TASK>
[   73.079334]  asm_common_interrupt+0x27/0x40
[   73.079335] RIP: 0010:cpuidle_enter_state+0x1df/0x520
[   73.079337] Code: 01 73 dd 48 83 c4 28 44 89 f0 5b 41 5c 41 5d 41 5e 41 5f 5d 31 d2 31 c9 31 f6 31 ff 45 31 c0 c3 cc cc cc cc fb 0f 1f 44 00 00 <45> 85 f6 0f 89 06 ff ff ff 48 c7 43 18 00 00 00 00 49 83 fd 09 0f
[   73.079339] RSP: 0000:ffff888100da7d30 EFLAGS: 00000246
[   73.079340] RAX: 0000000000000000 RBX: ffff88885c34ffe0 RCX: 0000000000000000
[   73.079342] RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000
[   73.079343] RBP: ffff888100da7d80 R08: 0000000000000000 R09: 0000000000000000
[   73.079344] R10: 0000000000000000 R11: 0000000000000000 R12: ffffffffb48627c0
[   73.079345] R13: 0000000000000004 R14: 0000000000000004 R15: 000000110380cbfa
[   73.079348]  cpuidle_enter+0x4f/0xb0
[   73.079350]  call_cpuidle+0x47/0xd0
[   73.079353]  do_idle+0x372/0x460
[   73.079356]  ? __pfx_do_idle+0x10/0x10
[   73.079358]  ? do_idle+0xd/0x460
[   73.079361]  cpu_startup_entry+0x58/0x70
[   73.079364]  start_secondary+0x220/0x2b0
[   73.079366]  ? __pfx_start_secondary+0x10/0x10
[   73.079368]  secondary_startup_64_no_verify+0x18f/0x19b
[   73.079371]  </TASK>
[   73.079373] ================================================================================