CVE-2026-98201
Estado: RecibidaSin puntuar—
In the Linux kernel, the following vulnerability has been resolved:
Input: zero ff_effect before compat copy in input_ff_effect_from_user
In the compat path input_ff_effect_from_user() aliases the caller's native struct ff_effect with the smaller struct ff_effect_compat and copies only the compat sized prefix:
The tail of the native structure is never written. Callers pass an uninitialized on-stack object, for example evdev_do_ioctl() for EVIOCSFF, so those bytes keep their previous stack contents. input_ff_upload() then stores the full native structure in ff->effects[id], from where a uinput based force feedback daemon can read it back via UI_BEGIN_FF_UPLOAD, disclosing kernel stack memory to userspace.
Leer descripción completaMostrar menos
Zero the effect before the compat copy.
Detalles técnicos trazas, registros y código del informe original
compat_effect = (struct ff_effect_compat *)effect; if (copy_from_user(compat_effect, buffer, sizeof(struct ff_effect_compat)))
CVSS
NVD no ha asignado puntuación CVSS a esta CVE (habitual desde el cambio de política de abril de 2026).
Probabilidad de explotación (EPSS)
- Probabilidad de explotación en los próximos 30 días: 0.18%
- Percentil entre todas las CVEs puntuadas: 7
- Fecha de la puntuación: 6/10/2026
EPSS (Exploit Prediction Scoring System, de FIRST) estima la probabilidad de que una vulnerabilidad sea explotada en 30 días. Complementa a CVSS (impacto) y a CISA KEV (explotación confirmada).
Tecnologías afectadas (1)
⚠ Inferidas por IA a partir de la descripción — NVD aún no ha analizado esta CVE; no son CPE verificados.
Referencias
- https://git.kernel.org/stable/c/0d05b43b55d4784a42ce8fb318175f8ad7d9af5a
- https://git.kernel.org/stable/c/6c26681c5668c973bd0e951407d670ac60d9cd66
- https://git.kernel.org/stable/c/b878720e8bcaa4cf7163a5081f904dd6baf11b2c
- https://git.kernel.org/stable/c/c5e573bb095d502be7cbbaa99c26a20984111c6d
- https://git.kernel.org/stable/c/ec174c2ab1abb76b20fa167c6db848c3d97aa838
- https://git.kernel.org/stable/c/ed0406e490f48ed180df140fe2a81be26bccb1a9
- https://git.kernel.org/stable/c/ed0905fda39682d3da7937184397d3276abbffa8
- https://git.kernel.org/stable/c/f84819ef8d66931ee3998fee3c4f03230f4cb6cc
JSON original (NVD)
Mostrar
{
"id": "CVE-2026-98201",
"cveTags": [],
"metrics": {},
"affected": [
{
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"affectedData": [
{
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"product": "Linux",
"versions": [
{
"status": "affected",
"version": "2d56f3a32c0e62f99c043d2579840f9731fe5855",
"lessThan": "ed0905fda39682d3da7937184397d3276abbffa8",
"versionType": "git"
},
{
"status": "affected",
"version": "2d56f3a32c0e62f99c043d2579840f9731fe5855",
"lessThan": "ec174c2ab1abb76b20fa167c6db848c3d97aa838",
"versionType": "git"
},
{
"status": "affected",
"version": "2d56f3a32c0e62f99c043d2579840f9731fe5855",
"lessThan": "6c26681c5668c973bd0e951407d670ac60d9cd66",
"versionType": "git"
},
{
"status": "affected",
"version": "2d56f3a32c0e62f99c043d2579840f9731fe5855",
"lessThan": "c5e573bb095d502be7cbbaa99c26a20984111c6d",
"versionType": "git"
},
{
"status": "affected",
"version": "2d56f3a32c0e62f99c043d2579840f9731fe5855",
"lessThan": "b878720e8bcaa4cf7163a5081f904dd6baf11b2c",
"versionType": "git"
},
{
"status": "affected",
"version": "2d56f3a32c0e62f99c043d2579840f9731fe5855",
"lessThan": "0d05b43b55d4784a42ce8fb318175f8ad7d9af5a",
"versionType": "git"
},
{
"status": "affected",
"version": "2d56f3a32c0e62f99c043d2579840f9731fe5855",
"lessThan": "ed0406e490f48ed180df140fe2a81be26bccb1a9",
"versionType": "git"
},
{
"status": "affected",
"version": "2d56f3a32c0e62f99c043d2579840f9731fe5855",
"lessThan": "f84819ef8d66931ee3998fee3c4f03230f4cb6cc",
"versionType": "git"
}
],
"programFiles": [
"drivers/input/input-compat.c"
],
"defaultStatus": "unaffected"
},
{
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"product": "Linux",
"versions": [
{
"status": "affected",
"version": "2.6.29"
},
{
"status": "unaffected",
"version": "0",
"lessThan": "2.6.29",
"versionType": "semver"
},
{
"status": "unaffected",
"version": "5.10.271",
"versionType": "semver",
"lessThanOrEqual": "5.10.*"
},
{
"status": "unaffected",
"version": "5.15.222",
"versionType": "semver",
"lessThanOrEqual": "5.15.*"
},
{
"status": "unaffected",
"version": "6.1.189",
"versionType": "semver",
"lessThanOrEqual": "6.1.*"
},
{
"status": "unaffected",
"version": "6.6.158",
"versionType": "semver",
"lessThanOrEqual": "6.6.*"
},
{
"status": "unaffected",
"version": "6.12.112",
"versionType": "semver",
"lessThanOrEqual": "6.12.*"
},
{
"status": "unaffected",
"version": "6.18.54",
"versionType": "semver",
"lessThanOrEqual": "6.18.*"
},
{
"status": "unaffected",
"version": "7.2.8",
"versionType": "semver",
"lessThanOrEqual": "7.2.*"
},
{
"status": "unaffected",
"version": "7.3-rc4",
"versionType": "original_commit_for_fix",
"lessThanOrEqual": "*"
}
],
"programFiles": [
"drivers/input/input-compat.c"
],
"defaultStatus": "affected"
}
]
}
],
"published": "2026-10-06T09:18:05.900",
"references": [
{
"url": "https://git.kernel.org/stable/c/0d05b43b55d4784a42ce8fb318175f8ad7d9af5a",
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
},
{
"url": "https://git.kernel.org/stable/c/6c26681c5668c973bd0e951407d670ac60d9cd66",
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
},
{
"url": "https://git.kernel.org/stable/c/b878720e8bcaa4cf7163a5081f904dd6baf11b2c",
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
},
{
"url": "https://git.kernel.org/stable/c/c5e573bb095d502be7cbbaa99c26a20984111c6d",
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
},
{
"url": "https://git.kernel.org/stable/c/ec174c2ab1abb76b20fa167c6db848c3d97aa838",
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
},
{
"url": "https://git.kernel.org/stable/c/ed0406e490f48ed180df140fe2a81be26bccb1a9",
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
},
{
"url": "https://git.kernel.org/stable/c/ed0905fda39682d3da7937184397d3276abbffa8",
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
},
{
"url": "https://git.kernel.org/stable/c/f84819ef8d66931ee3998fee3c4f03230f4cb6cc",
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
}
],
"vulnStatus": "Received",
"descriptions": [
{
"lang": "en",
"value": "In the Linux kernel, the following vulnerability has been resolved:\n\nInput: zero ff_effect before compat copy in input_ff_effect_from_user\n\nIn the compat path input_ff_effect_from_user() aliases the caller's\nnative struct ff_effect with the smaller struct ff_effect_compat and\ncopies only the compat sized prefix:\n\n\tcompat_effect = (struct ff_effect_compat *)effect;\n\n\tif (copy_from_user(compat_effect, buffer,\n\t\t\t sizeof(struct ff_effect_compat)))\n\nThe tail of the native structure is never written. Callers pass an\nuninitialized on-stack object, for example evdev_do_ioctl() for\nEVIOCSFF, so those bytes keep their previous stack contents.\ninput_ff_upload() then stores the full native structure in\nff->effects[id], from where a uinput based force feedback daemon can\nread it back via UI_BEGIN_FF_UPLOAD, disclosing kernel stack memory to\nuserspace.\n\nZero the effect before the compat copy."
}
],
"lastModified": "2026-10-06T09:18:05.900",
"sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
}