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linux/drivers/hid/amd-sfh-hid
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Basavaraj Natikar 8785436617 HID: amd_sfh: Fix for shift-out-of-bounds 
Shift operation of 'exp' and 'shift' variables exceeds the maximum number
of shift values in the u32 range leading to UBSAN shift-out-of-bounds.

...
[    6.120512] UBSAN: shift-out-of-bounds in drivers/hid/amd-sfh-hid/sfh1_1/amd_sfh_desc.c:149:50
[    6.120598] shift exponent 104 is too large for 64-bit type 'long unsigned int'
[    6.120659] CPU: 4 PID: 96 Comm: kworker/4:1 Not tainted 6.4.0amd_1-next-20230519-dirty #10
[    6.120665] Hardware name: AMD Birman-PHX/Birman-PHX, BIOS SFH_with_HPD_SEN.FD 04/05/2023
[    6.120667] Workqueue: events amd_sfh_work_buffer [amd_sfh]
[    6.120687] Call Trace:
[    6.120690]  <TASK>
[    6.120694]  dump_stack_lvl+0x48/0x70
[    6.120704]  dump_stack+0x10/0x20
[    6.120707]  ubsan_epilogue+0x9/0x40
[    6.120716]  __ubsan_handle_shift_out_of_bounds+0x10f/0x170
[    6.120720]  ? psi_group_change+0x25f/0x4b0
[    6.120729]  float_to_int.cold+0x18/0xba [amd_sfh]
[    6.120739]  get_input_rep+0x57/0x340 [amd_sfh]
[    6.120748]  ? __schedule+0xba7/0x1b60
[    6.120756]  ? __pfx_get_input_rep+0x10/0x10 [amd_sfh]
[    6.120764]  amd_sfh_work_buffer+0x91/0x180 [amd_sfh]
[    6.120772]  process_one_work+0x229/0x430
[    6.120780]  worker_thread+0x4a/0x3c0
[    6.120784]  ? __pfx_worker_thread+0x10/0x10
[    6.120788]  kthread+0xf7/0x130
[    6.120792]  ? __pfx_kthread+0x10/0x10
[    6.120795]  ret_from_fork+0x29/0x50
[    6.120804]  </TASK>
...

Fix this by adding the condition to validate shift ranges.

Fixes: 93ce5e0231 ("HID: amd_sfh: Implement SFH1.1 functionality")
Cc: stable@vger.kernel.org
Tested-by: Kai-Heng Feng <kai.heng.feng@canonical.com>
Signed-off-by: Basavaraj Natikar <Basavaraj.Natikar@amd.com>
Signed-off-by: Akshata MukundShetty <akshata.mukundshetty@amd.com>
Link: https://lore.kernel.org/r/20230707065722.9036-3-Basavaraj.Natikar@amd.com
Signed-off-by: Benjamin Tissoires <bentiss@kernel.org>
2023-07-10 09:53:50 +02:00
..
hid_descriptor HID: amd_sfh: Support for additional light sensor 2023-04-13 15:57:14 +02:00
sfh1_1 HID: amd_sfh: Fix for shift-out-of-bounds 2023-07-10 09:53:50 +02:00
amd_sfh_client.c HID: amd_sfh: Split sensor and HID initialization 2023-05-23 15:58:30 +02:00
amd_sfh_common.h HID: amd_sfh: Implement SFH1.1 functionality 2022-07-21 13:44:04 +02:00
amd_sfh_hid.c HID: amd_sfh: Constify lowlevel HID driver 2023-02-06 15:08:44 +01:00
amd_sfh_hid.h HID: amd_sfh: Fix max supported HID devices 2023-04-25 10:58:28 +02:00
amd_sfh_pcie.c HID: amd_sfh: Support for additional light sensor 2023-04-13 15:57:14 +02:00
amd_sfh_pcie.h HID: amd_sfh: Support for additional light sensor 2023-04-13 15:57:14 +02:00
Kconfig HID: stop drivers from selecting CONFIG_HID 2023-01-18 16:14:04 +01:00
Makefile HID: amd_sfh: Implement SFH1.1 functionality 2022-07-21 13:44:04 +02:00