CVE-2026-80894
Estado: RecibidaSin puntuar—
In the Linux kernel, the following vulnerability has been resolved:
iommufd: Fix wrong hwpt passed to iommufd_auto_response_faults on replace
iommufd_hwpt_replace_device() calls:
passing the *new* hwpt together with the handle of the device's *old* domain. This should be a parameter mismatch:
Fix this by passing "old" instead.
Detalles técnicos trazas, registros y código del informe original
iommufd_auto_response_faults(hwpt, old_handle);
1. Semantically, iommufd_auto_response_faults(x, handle) scans
x->fault's deliver list and response xarray for groups matching
"handle". A group is queued under the hwpt that was attached at
fault-delivery time. old_handle is fetched *before* the domain switch,
so its group lives on old->fault, not on the new hwpt->fault.
2. Historically, the first argument was "old". The routine was
introduced by commit b7d8833677ba ("iommufd: Fault-capable hwpt
attach/detach/replace") as __fault_domain_replace_dev() in
fault.c, correctly calling iommufd_auto_response_faults(old, curr).
Commit fb21b1568ada ("iommufd: Make attach_handle generic than
fault specific") moved this into iommufd_hwpt_replace_device() in
device.c and swapped it to "hwpt". This should be a refactor regression,
not an intentional change.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: 0.21%
- Percentil entre todas las CVEs puntuadas: 10
- Fecha de la puntuación: 5/10/2026
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
JSON original (NVD)
Mostrar
{
"id": "CVE-2026-80894",
"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": "6d11543bf37abdf60b8e6022a62fccfb82a5fe2e",
"lessThan": "adb87155b67f9759ff010c0a99559f5bffa45dcf",
"versionType": "git"
},
{
"status": "affected",
"version": "fb21b1568adaa76af7a8c853f37c60fba8b28661",
"lessThan": "564ac339c0f8bada4e77a57a92bab9d3df635e07",
"versionType": "git"
},
{
"status": "affected",
"version": "fb21b1568adaa76af7a8c853f37c60fba8b28661",
"lessThan": "8eb077025279304268bd58657f0af3d388822b21",
"versionType": "git"
},
{
"status": "affected",
"version": "fb21b1568adaa76af7a8c853f37c60fba8b28661",
"lessThan": "ba5c0f28a26e7d9be1e0997f8920dd638e2782fd",
"versionType": "git"
},
{
"status": "affected",
"version": "1e0216b6a58c79b5ee91c78706d5f560e4d1f56f",
"versionType": "git"
},
{
"status": "affected",
"version": "4b23c4b991eb90cc7bca42e9f81142feedd4bb56",
"versionType": "git"
},
{
"status": "affected",
"version": "6.12.24",
"lessThan": "6.12.105",
"versionType": "semver"
},
{
"status": "affected",
"version": "6.13.12",
"lessThan": "6.14",
"versionType": "semver"
},
{
"status": "affected",
"version": "6.14.3",
"lessThan": "6.15",
"versionType": "semver"
}
],
"programFiles": [
"drivers/iommu/iommufd/device.c"
],
"defaultStatus": "unaffected"
},
{
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"product": "Linux",
"versions": [
{
"status": "affected",
"version": "6.15"
},
{
"status": "unaffected",
"version": "0",
"lessThan": "6.15",
"versionType": "semver"
},
{
"status": "unaffected",
"version": "6.12.105",
"versionType": "semver",
"lessThanOrEqual": "6.12.*"
},
{
"status": "unaffected",
"version": "6.18.44",
"versionType": "semver",
"lessThanOrEqual": "6.18.*"
},
{
"status": "unaffected",
"version": "7.1.8",
"versionType": "semver",
"lessThanOrEqual": "7.1.*"
},
{
"status": "unaffected",
"version": "7.2",
"versionType": "original_commit_for_fix",
"lessThanOrEqual": "*"
}
],
"programFiles": [
"drivers/iommu/iommufd/device.c"
],
"defaultStatus": "affected"
}
]
}
],
"published": "2026-09-04T18:17:57.603",
"references": [
{
"url": "https://git.kernel.org/stable/c/564ac339c0f8bada4e77a57a92bab9d3df635e07",
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
},
{
"url": "https://git.kernel.org/stable/c/8eb077025279304268bd58657f0af3d388822b21",
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
},
{
"url": "https://git.kernel.org/stable/c/adb87155b67f9759ff010c0a99559f5bffa45dcf",
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
},
{
"url": "https://git.kernel.org/stable/c/ba5c0f28a26e7d9be1e0997f8920dd638e2782fd",
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
}
],
"vulnStatus": "Received",
"descriptions": [
{
"lang": "en",
"value": "In the Linux kernel, the following vulnerability has been resolved:\n\niommufd: Fix wrong hwpt passed to iommufd_auto_response_faults on replace\n\niommufd_hwpt_replace_device() calls:\n\n\tiommufd_auto_response_faults(hwpt, old_handle);\n\npassing the *new* hwpt together with the handle of\nthe device's *old* domain. This should be a parameter mismatch:\n\n1. Semantically, iommufd_auto_response_faults(x, handle) scans\n x->fault's deliver list and response xarray for groups matching\n \"handle\". A group is queued under the hwpt that was attached at\n fault-delivery time. old_handle is fetched *before* the domain switch,\n so its group lives on old->fault, not on the new hwpt->fault.\n\n2. Historically, the first argument was \"old\". The routine was\n introduced by commit b7d8833677ba (\"iommufd: Fault-capable hwpt\n attach/detach/replace\") as __fault_domain_replace_dev() in\n fault.c, correctly calling iommufd_auto_response_faults(old, curr).\n Commit fb21b1568ada (\"iommufd: Make attach_handle generic than\n fault specific\") moved this into iommufd_hwpt_replace_device() in\n device.c and swapped it to \"hwpt\". This should be a refactor regression,\n not an intentional change.\n\nFix this by passing \"old\" instead."
}
],
"lastModified": "2026-09-04T18:17:57.603",
"sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
}