CVE-2026-80870
Estado: RecibidaSin puntuar—
In the Linux kernel, the following vulnerability has been resolved:
drm/amdkfd: Validate CRIU-restored IDs before idr_alloc
The KFD CRIU restore flow restores previously saved object IDs from userspace.
For event restore:
For BO restore:
In both cases, the restored ID comes from userspace-provided CRIU data.
idr_alloc() expects the ID range values to fit within signed int limits. If a restored ID is larger than INT_MAX, it can trigger a WARN in the IDR layer.
A kernel WARN is undesirable because it prints a warning trace and may cause a panic or reboot on systems with panic_on_warn enabled.
Smatch reported these paths as allowing unchecked userspace values to reach idr_alloc().
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Add INT_MAX validation before using restored IDs in:
- kfd_criu_restore_event() - criu_restore_memory_of_gpu()
If the restored ID is invalid, return -EINVAL.
This prevents invalid restore data from reaching the IDR layer and avoids WARN-triggering paths, while keeping valid restore behavior unchanged.
Detalles técnicos trazas, registros y código del informe original
kfd_criu_restore_event()
-> create_signal_event() / create_other_event()
-> allocate_event_notification_slot()
-> idr_alloc(..., *restore_id, *restore_id + 1, ...)
criu_restore_memory_of_gpu()
-> idr_alloc(..., bo_priv->idr_handle, ...)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: 11
- 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/085ea93bda71fee600cc12a17026598eb10dd1f9
- https://git.kernel.org/stable/c/543ed0f61d56501cc585162da600bbedd7c08c0f
- https://git.kernel.org/stable/c/85043dd49c2f51a37b22618168e3ae59ab92f0d6
- https://git.kernel.org/stable/c/89a75e3349c4fae28cbedc711bc924cbc6293da2
- https://git.kernel.org/stable/c/cb6311f25a096621ac7ffd91b50d1bb1cfb63a96
- https://git.kernel.org/stable/c/f8687018f24037056692c1e93c7d96cc72889d5b
JSON original (NVD)
Mostrar
{
"id": "CVE-2026-80870",
"cveTags": [],
"metrics": {},
"affected": [
{
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"affectedData": [
{
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"vendor": "Linux",
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"versions": [
{
"status": "affected",
"version": "40e8a766a761f7fdc8530347527b344fddf6f1a8",
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"versionType": "git"
},
{
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{
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{
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{
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"versionType": "git"
}
],
"programFiles": [
"drivers/gpu/drm/amd/amdkfd/kfd_chardev.c",
"drivers/gpu/drm/amd/amdkfd/kfd_events.c"
],
"defaultStatus": "unaffected"
},
{
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"product": "Linux",
"versions": [
{
"status": "affected",
"version": "5.18"
},
{
"status": "unaffected",
"version": "0",
"lessThan": "5.18",
"versionType": "semver"
},
{
"status": "unaffected",
"version": "6.1.178",
"versionType": "semver",
"lessThanOrEqual": "6.1.*"
},
{
"status": "unaffected",
"version": "6.6.145",
"versionType": "semver",
"lessThanOrEqual": "6.6.*"
},
{
"status": "unaffected",
"version": "6.12.97",
"versionType": "semver",
"lessThanOrEqual": "6.12.*"
},
{
"status": "unaffected",
"version": "6.18.40",
"versionType": "semver",
"lessThanOrEqual": "6.18.*"
},
{
"status": "unaffected",
"version": "7.1.5",
"versionType": "semver",
"lessThanOrEqual": "7.1.*"
},
{
"status": "unaffected",
"version": "7.2",
"versionType": "original_commit_for_fix",
"lessThanOrEqual": "*"
}
],
"programFiles": [
"drivers/gpu/drm/amd/amdkfd/kfd_chardev.c",
"drivers/gpu/drm/amd/amdkfd/kfd_events.c"
],
"defaultStatus": "affected"
}
]
}
],
"published": "2026-09-04T17:16:58.860",
"references": [
{
"url": "https://git.kernel.org/stable/c/085ea93bda71fee600cc12a17026598eb10dd1f9",
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
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{
"url": "https://git.kernel.org/stable/c/543ed0f61d56501cc585162da600bbedd7c08c0f",
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
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{
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"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
},
{
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"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
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{
"url": "https://git.kernel.org/stable/c/cb6311f25a096621ac7ffd91b50d1bb1cfb63a96",
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
},
{
"url": "https://git.kernel.org/stable/c/f8687018f24037056692c1e93c7d96cc72889d5b",
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
}
],
"vulnStatus": "Received",
"descriptions": [
{
"lang": "en",
"value": "In the Linux kernel, the following vulnerability has been resolved:\n\ndrm/amdkfd: Validate CRIU-restored IDs before idr_alloc\n\nThe KFD CRIU restore flow restores previously saved object IDs from\nuserspace.\n\nFor event restore:\n\n kfd_criu_restore_event()\n -> create_signal_event() / create_other_event()\n -> allocate_event_notification_slot()\n -> idr_alloc(..., *restore_id, *restore_id + 1, ...)\n\nFor BO restore:\n\n criu_restore_memory_of_gpu()\n -> idr_alloc(..., bo_priv->idr_handle, ...)\n\nIn both cases, the restored ID comes from userspace-provided CRIU data.\n\nidr_alloc() expects the ID range values to fit within signed int\nlimits. If a restored ID is larger than INT_MAX, it can trigger a WARN\nin the IDR layer.\n\nA kernel WARN is undesirable because it prints a warning trace and may\ncause a panic or reboot on systems with panic_on_warn enabled.\n\nSmatch reported these paths as allowing unchecked userspace values to\nreach idr_alloc().\n\nAdd INT_MAX validation before using restored IDs in:\n\n- kfd_criu_restore_event()\n- criu_restore_memory_of_gpu()\n\nIf the restored ID is invalid, return -EINVAL.\n\nThis prevents invalid restore data from reaching the IDR layer and\navoids WARN-triggering paths, while keeping valid restore behavior\nunchanged."
}
],
"lastModified": "2026-09-04T17:16:58.860",
"sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
}