CVE-2025-39818 (GCVE-0-2025-39818)
Vulnerability from cvelistv5
Published
2025-09-16 13:00
Modified
2026-08-05 12:05
Severity ?
7.8 (High) - CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Summary
In the Linux kernel, the following vulnerability has been resolved: HID: intel-thc-hid: intel-thc: Fix incorrect pointer arithmetic in I2C regs save Improper use of secondary pointer (&dev->i2c_subip_regs) caused kernel crash and out-of-bounds error: BUG: KASAN: slab-out-of-bounds in _regmap_bulk_read+0x449/0x510 Write of size 4 at addr ffff888136005dc0 by task kworker/u33:5/5107 CPU: 3 UID: 0 PID: 5107 Comm: kworker/u33:5 Not tainted 6.16.0+ #3 PREEMPT(voluntary) Workqueue: async async_run_entry_fn Call Trace: <TASK> dump_stack_lvl+0x76/0xa0 print_report+0xd1/0x660 ? __pfx__raw_spin_lock_irqsave+0x10/0x10 ? kasan_complete_mode_report_info+0x26/0x200 kasan_report+0xe1/0x120 ? _regmap_bulk_read+0x449/0x510 ? _regmap_bulk_read+0x449/0x510 __asan_report_store4_noabort+0x17/0x30 _regmap_bulk_read+0x449/0x510 ? __pfx__regmap_bulk_read+0x10/0x10 regmap_bulk_read+0x270/0x3d0 pio_complete+0x1ee/0x2c0 [intel_thc] ? __pfx_pio_complete+0x10/0x10 [intel_thc] ? __pfx_pio_wait+0x10/0x10 [intel_thc] ? regmap_update_bits_base+0x13b/0x1f0 thc_i2c_subip_pio_read+0x117/0x270 [intel_thc] thc_i2c_subip_regs_save+0xc2/0x140 [intel_thc] ? __pfx_thc_i2c_subip_regs_save+0x10/0x10 [intel_thc] [...] The buggy address belongs to the object at ffff888136005d00 which belongs to the cache kmalloc-rnd-12-192 of size 192 The buggy address is located 0 bytes to the right of allocated 192-byte region [ffff888136005d00, ffff888136005dc0) Replaced with direct array indexing (&dev->i2c_subip_regs[i]) to ensure safe memory access.
References
Impacted products
Vendor Product Version
Linux Linux Version: 4228966def884c6e34b85cdc7118c5d013e1718f
Version: 4228966def884c6e34b85cdc7118c5d013e1718f
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          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nHID: intel-thc-hid: intel-thc: Fix incorrect pointer arithmetic in I2C regs save\n\nImproper use of secondary pointer (\u0026dev-\u003ei2c_subip_regs) caused\nkernel crash and out-of-bounds error:\n\n BUG: KASAN: slab-out-of-bounds in _regmap_bulk_read+0x449/0x510\n Write of size 4 at addr ffff888136005dc0 by task kworker/u33:5/5107\n\n CPU: 3 UID: 0 PID: 5107 Comm: kworker/u33:5 Not tainted 6.16.0+ #3 PREEMPT(voluntary)\n Workqueue: async async_run_entry_fn\n Call Trace:\n  \u003cTASK\u003e\n  dump_stack_lvl+0x76/0xa0\n  print_report+0xd1/0x660\n  ? __pfx__raw_spin_lock_irqsave+0x10/0x10\n  ? kasan_complete_mode_report_info+0x26/0x200\n  kasan_report+0xe1/0x120\n  ? _regmap_bulk_read+0x449/0x510\n  ? _regmap_bulk_read+0x449/0x510\n  __asan_report_store4_noabort+0x17/0x30\n  _regmap_bulk_read+0x449/0x510\n  ? __pfx__regmap_bulk_read+0x10/0x10\n  regmap_bulk_read+0x270/0x3d0\n  pio_complete+0x1ee/0x2c0 [intel_thc]\n  ? __pfx_pio_complete+0x10/0x10 [intel_thc]\n  ? __pfx_pio_wait+0x10/0x10 [intel_thc]\n  ? regmap_update_bits_base+0x13b/0x1f0\n  thc_i2c_subip_pio_read+0x117/0x270 [intel_thc]\n  thc_i2c_subip_regs_save+0xc2/0x140 [intel_thc]\n  ? __pfx_thc_i2c_subip_regs_save+0x10/0x10 [intel_thc]\n[...]\n The buggy address belongs to the object at ffff888136005d00\n  which belongs to the cache kmalloc-rnd-12-192 of size 192\n The buggy address is located 0 bytes to the right of\n  allocated 192-byte region [ffff888136005d00, ffff888136005dc0)\n\nReplaced with direct array indexing (\u0026dev-\u003ei2c_subip_regs[i]) to ensure\nsafe memory access."
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__pfx__raw_spin_lock_irqsave+0x10/0x10\\n  ? kasan_complete_mode_report_info+0x26/0x200\\n  kasan_report+0xe1/0x120\\n  ? _regmap_bulk_read+0x449/0x510\\n  ? _regmap_bulk_read+0x449/0x510\\n  __asan_report_store4_noabort+0x17/0x30\\n  _regmap_bulk_read+0x449/0x510\\n  ? __pfx__regmap_bulk_read+0x10/0x10\\n  regmap_bulk_read+0x270/0x3d0\\n  pio_complete+0x1ee/0x2c0 [intel_thc]\\n  ? __pfx_pio_complete+0x10/0x10 [intel_thc]\\n  ? __pfx_pio_wait+0x10/0x10 [intel_thc]\\n  ? regmap_update_bits_base+0x13b/0x1f0\\n  thc_i2c_subip_pio_read+0x117/0x270 [intel_thc]\\n  thc_i2c_subip_regs_save+0xc2/0x140 [intel_thc]\\n  ? __pfx_thc_i2c_subip_regs_save+0x10/0x10 [intel_thc]\\n[...]\\n The buggy address belongs to the object at ffff888136005d00\\n  which belongs to the cache kmalloc-rnd-12-192 of size 192\\n The buggy address is located 0 bytes to the right of\\n  allocated 192-byte region [ffff888136005d00, ffff888136005dc0)\\n\\nReplaced with direct array indexing (\u0026dev-\u003ei2c_subip_regs[i]) to ensure\\nsafe memory access.\"}], \"cpeApplicability\": [{\"nodes\": [{\"negate\": false, \"cpeMatch\": [{\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"6.16.5\", \"versionStartIncluding\": \"6.14\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"6.17\", \"versionStartIncluding\": \"6.14\"}], \"operator\": \"OR\"}]}], \"providerMetadata\": {\"orgId\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\", \"shortName\": \"Linux\", \"dateUpdated\": \"2026-07-30T05:57:49.442Z\"}}}",
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