CVE-2025-39818

In the Linux kernel, the following vulnerability has been resolved:<br /> <br /> HID: intel-thc-hid: intel-thc: Fix incorrect pointer arithmetic in I2C regs save<br /> <br /> Improper use of secondary pointer (&amp;dev-&gt;i2c_subip_regs) caused<br /> kernel crash and out-of-bounds error:<br /> <br /> BUG: KASAN: slab-out-of-bounds in _regmap_bulk_read+0x449/0x510<br /> Write of size 4 at addr ffff888136005dc0 by task kworker/u33:5/5107<br /> <br /> CPU: 3 UID: 0 PID: 5107 Comm: kworker/u33:5 Not tainted 6.16.0+ #3 PREEMPT(voluntary)<br /> Workqueue: async async_run_entry_fn<br /> Call Trace:<br /> <br /> dump_stack_lvl+0x76/0xa0<br /> print_report+0xd1/0x660<br /> ? __pfx__raw_spin_lock_irqsave+0x10/0x10<br /> ? kasan_complete_mode_report_info+0x26/0x200<br /> kasan_report+0xe1/0x120<br /> ? _regmap_bulk_read+0x449/0x510<br /> ? _regmap_bulk_read+0x449/0x510<br /> __asan_report_store4_noabort+0x17/0x30<br /> _regmap_bulk_read+0x449/0x510<br /> ? __pfx__regmap_bulk_read+0x10/0x10<br /> regmap_bulk_read+0x270/0x3d0<br /> pio_complete+0x1ee/0x2c0 [intel_thc]<br /> ? __pfx_pio_complete+0x10/0x10 [intel_thc]<br /> ? __pfx_pio_wait+0x10/0x10 [intel_thc]<br /> ? regmap_update_bits_base+0x13b/0x1f0<br /> thc_i2c_subip_pio_read+0x117/0x270 [intel_thc]<br /> thc_i2c_subip_regs_save+0xc2/0x140 [intel_thc]<br /> ? __pfx_thc_i2c_subip_regs_save+0x10/0x10 [intel_thc]<br /> [...]<br /> The buggy address belongs to the object at ffff888136005d00<br /> which belongs to the cache kmalloc-rnd-12-192 of size 192<br /> The buggy address is located 0 bytes to the right of<br /> allocated 192-byte region [ffff888136005d00, ffff888136005dc0)<br /> <br /> Replaced with direct array indexing (&amp;dev-&gt;i2c_subip_regs[i]) to ensure<br /> safe memory access.