CVE-2025-39818
Full vulnerability record from the local CVENow database.
Description
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.
Severity
HIGH
CVSS score
7.8
(v3.1)
Vulnerability status
Modified
Source identifier
416baaa9-dc9f-4396-8d5f-8c081fb06d67
Published
2025-09-16 13:15:57.737000
Last modified
2026-10-19 21:10:00.160000
View original CVE JSON
{
"id": "CVE-2025-39818",
"sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"published": "2025-09-16T13:15:57.737",
"lastModified": "2026-10-19T21:10:00.160",
"vulnStatus": "Modified",
"cveTags": [],
"descriptions": [
{
"lang": "en",
"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 (&dev->i2c_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 <TASK>\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 (&dev->i2c_subip_regs[i]) to ensure\nsafe memory access."
},
{
"lang": "es",
"value": "En el kernel de Linux, la siguiente vulnerabilidad ha sido resuelta:\n\nHID: intel-thc-hid: intel-thc: Corrección de aritmética de punteros incorrecta en el guardado de registros I2C\n\nEl uso indebido del puntero secundario (&dev->i2c_subip_regs) causó un fallo del kernel y un error de fuera de límites:\n\n BUG: KASAN: slab-fuera-de-límites en _regmap_bulk_read+0x449/0x510\n Escritura de tamaño 4 en la dirección ffff888136005dc0 por la tarea kworker/u33:5/5107\n\n CPU: 3 UID: 0 PID: 5107 Comm: kworker/u33:5 No contaminado 6.16.0+ #3 PREEMPT(voluntario)\n Cola de trabajo: async async_run_entry_fn\n Rastreo de llamadas:\n <TAREA>\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 La dirección errónea pertenece al objeto en ffff888136005d00\n que pertenece a la caché kmalloc-rnd-12-192 de tamaño 192\n La dirección errónea está ubicada 0 bytes a la derecha de\n la región asignada de 192 bytes [ffff888136005d00, ffff888136005dc0)\n\nReemplazado con indexación directa de array (&dev->i2c_subip_regs[i]) para asegurar un acceso seguro a la memoria."
}
],
"affected": [
{
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"affectedData": [
{
"vendor": "Linux",
"product": "Linux",
"defaultStatus": "unaffected",
"programFiles": [
"drivers/hid/intel-thc-hid/intel-thc/intel-thc-dev.c"
],
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"versions": [
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"lessThan": "78d4cf0466c79452e47aa6f720afbde63e709ccc",
"versionType": "git",
"status": "affected"
},
{
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"lessThan": "a7fc15ed629be89e51e09b743277c53e0a0168f5",
"versionType": "git",
"status": "affected"
}
]
},
{
"vendor": "Linux",
"product": "Linux",
"defaultStatus": "affected",
"programFiles": [
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],
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"versions": [
{
"version": "6.14",
"status": "affected"
},
{
"version": "0",
"lessThan": "6.14",
"versionType": "semver",
"status": "unaffected"
},
{
"version": "6.16.5",
"lessThanOrEqual": "6.16.*",
"versionType": "semver",
"status": "unaffected"
},
{
"version": "6.17",
"lessThanOrEqual": "*",
"versionType": "original_commit_for_fix",
"status": "unaffected"
}
]
}
]
}
],
"metrics": {
"cvssMetricV31": [
{
"source": "[email protected]",
"type": "Primary",
"cvssData": {
"version": "3.1",
"vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
"baseScore": 7.8,
"baseSeverity": "HIGH",
"attackVector": "LOCAL",
"attackComplexity": "LOW",
"privilegesRequired": "LOW",
"userInteraction": "NONE",
"scope": "UNCHANGED",
"confidentialityImpact": "HIGH",
"integrityImpact": "HIGH",
"availabilityImpact": "HIGH"
},
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},
{
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"type": "Secondary",
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"confidentialityImpact": "HIGH",
"integrityImpact": "HIGH",
"availabilityImpact": "HIGH"
},
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}
],
"ssvcV203": [
{
"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
"ssvcData": {
"timestamp": "2026-01-14T18:16:14.710756Z",
"id": "CVE-2025-39818",
"options": [
{
"exploitation": "none"
},
{
"automatable": "no"
},
{
"technicalImpact": "total"
}
],
"role": "CISA Coordinator",
"version": "2.0.3"
}
}
]
},
"weaknesses": [
{
"source": "[email protected]",
"type": "Primary",
"description": [
{
"lang": "en",
"value": "CWE-787"
}
]
},
{
"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
"type": "Secondary",
"description": [
{
"lang": "en",
"value": "CWE-787"
}
]
}
],
"configurations": [
{
"nodes": [
{
"operator": "OR",
"negate": false,
"cpeMatch": [
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"vulnerable": true,
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionStartIncluding": "6.14",
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"matchCriteriaId": "7B71908C-DDA9-4EA9-9BC6-2C7DFA7822C8"
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"references": [
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