CVE-2026-98609
En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad:
drm/virtio: corrige la fuga de objetos cuando drm_gem_handle_create() falla
virtio_gpu_gem_create() es propietaria de la referencia obtenida por virtio_gpu_object_create(). En la ruta de error de drm_gem_handle_create() llama a drm_gem_object_release() en lugar de liberar esa referencia.
drm_gem_object_release() es la operación inversa de drm_gem_object_init() y no modifica el contador de referencias ni llama a obj->funcs->free(), por lo que solo es correcta como último paso de un destructor, como en virtio_gpu_cleanup_object().
Leer descripción completaMostrar menos
Usarla aquí deja el bo con un refcount de 1 y sin ninguna referencia restante, por lo que virtio_gpu_free_object() nunca se ejecuta y las páginas shmem, la tabla sg y virtio_gpu_object quedan filtradas. Como virtio_gpu_object_create() ya ha establecido bo->created, tampoco se encola VIRTIO_GPU_CMD_RESOURCE_UNREF, por lo que el recurso del lado del host y el identificador de recurso también quedan filtrados.
drm_gem_handle_create_tail() libera la referencia del handle en todas sus rutas de error internas, por lo que el llamador solo tiene que liberar la suya. Usa drm_gem_object_put(), igual que en la ruta de éxito de más abajo.
Traducción automática del texto original de NVD (en inglés).
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
- 20/10/2026
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
Mostrar las 8 referencias
- https://git.kernel.org/stable/c/13423a058187c2039aa8cb235c916be4477221b7
- https://git.kernel.org/stable/c/264ae8ac8fd625b6c118baf16c111adeee2ec632
- https://git.kernel.org/stable/c/36570ef2244cc4d7563b1f0157bc0f032498638c
- https://git.kernel.org/stable/c/372e9c3d45f664a2c000427ccbf6cdc2f99b3170
- https://git.kernel.org/stable/c/687be2f8b5e0e0ca9a7028f8f6413d0ed3fbb9dc
- https://git.kernel.org/stable/c/a93dce15dfef200c346b050a2acbed516cc62706
- https://git.kernel.org/stable/c/e2edd2d78d2cf8446de017adec9598feefed3297
- https://git.kernel.org/stable/c/f75066c79d1eec453c0d386ef8636873d1e11f2c
JSON original (NVD)
Mostrar
{
"id": "CVE-2026-98609",
"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": "dc5698e80cf724770283e10414054662bdf6ccfa",
"lessThan": "13423a058187c2039aa8cb235c916be4477221b7",
"versionType": "git"
},
{
"status": "affected",
"version": "dc5698e80cf724770283e10414054662bdf6ccfa",
"lessThan": "687be2f8b5e0e0ca9a7028f8f6413d0ed3fbb9dc",
"versionType": "git"
},
{
"status": "affected",
"version": "dc5698e80cf724770283e10414054662bdf6ccfa",
"lessThan": "264ae8ac8fd625b6c118baf16c111adeee2ec632",
"versionType": "git"
},
{
"status": "affected",
"version": "dc5698e80cf724770283e10414054662bdf6ccfa",
"lessThan": "e2edd2d78d2cf8446de017adec9598feefed3297",
"versionType": "git"
},
{
"status": "affected",
"version": "dc5698e80cf724770283e10414054662bdf6ccfa",
"lessThan": "372e9c3d45f664a2c000427ccbf6cdc2f99b3170",
"versionType": "git"
},
{
"status": "affected",
"version": "dc5698e80cf724770283e10414054662bdf6ccfa",
"lessThan": "a93dce15dfef200c346b050a2acbed516cc62706",
"versionType": "git"
},
{
"status": "affected",
"version": "dc5698e80cf724770283e10414054662bdf6ccfa",
"lessThan": "f75066c79d1eec453c0d386ef8636873d1e11f2c",
"versionType": "git"
},
{
"status": "affected",
"version": "dc5698e80cf724770283e10414054662bdf6ccfa",
"lessThan": "36570ef2244cc4d7563b1f0157bc0f032498638c",
"versionType": "git"
}
],
"programFiles": [
"drivers/gpu/drm/virtio/virtgpu_gem.c"
],
"defaultStatus": "unaffected"
},
{
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"product": "Linux",
"versions": [
{
"status": "affected",
"version": "4.2"
},
{
"status": "unaffected",
"version": "0",
"lessThan": "4.2",
"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": "6.18.55",
"versionType": "semver",
"lessThanOrEqual": "6.18.*"
},
{
"status": "unaffected",
"version": "7.2.9",
"versionType": "semver",
"lessThanOrEqual": "7.2.*"
},
{
"status": "unaffected",
"version": "7.3",
"versionType": "original_commit_for_fix",
"lessThanOrEqual": "*"
}
],
"programFiles": [
"drivers/gpu/drm/virtio/virtgpu_gem.c"
],
"defaultStatus": "affected"
}
]
}
],
"published": "2026-10-18T16:17:13.677",
"references": [
{
"url": "https://git.kernel.org/stable/c/13423a058187c2039aa8cb235c916be4477221b7",
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
},
{
"url": "https://git.kernel.org/stable/c/264ae8ac8fd625b6c118baf16c111adeee2ec632",
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
},
{
"url": "https://git.kernel.org/stable/c/36570ef2244cc4d7563b1f0157bc0f032498638c",
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
},
{
"url": "https://git.kernel.org/stable/c/372e9c3d45f664a2c000427ccbf6cdc2f99b3170",
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
},
{
"url": "https://git.kernel.org/stable/c/687be2f8b5e0e0ca9a7028f8f6413d0ed3fbb9dc",
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
},
{
"url": "https://git.kernel.org/stable/c/a93dce15dfef200c346b050a2acbed516cc62706",
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
},
{
"url": "https://git.kernel.org/stable/c/e2edd2d78d2cf8446de017adec9598feefed3297",
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
},
{
"url": "https://git.kernel.org/stable/c/f75066c79d1eec453c0d386ef8636873d1e11f2c",
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
}
],
"vulnStatus": "Received",
"descriptions": [
{
"lang": "en",
"value": "In the Linux kernel, the following vulnerability has been resolved:\n\ndrm/virtio: fix object leak when drm_gem_handle_create() fails\n\nvirtio_gpu_gem_create() owns the reference taken by\nvirtio_gpu_object_create(). On the drm_gem_handle_create() error path it\ncalls drm_gem_object_release() instead of dropping that reference.\n\ndrm_gem_object_release() is the inverse of drm_gem_object_init() and does\nnot touch the reference count or call obj->funcs->free(), so it is only\ncorrect as the last step of a destructor, as in\nvirtio_gpu_cleanup_object(). Using it here leaves the bo at refcount 1\nwith no remaining reference, so virtio_gpu_free_object() never runs and\nthe shmem pages, sg table and virtio_gpu_object are leaked. Since\nvirtio_gpu_object_create() has already set bo->created,\nVIRTIO_GPU_CMD_RESOURCE_UNREF is not queued either, leaking the host-side\nresource and the resource id.\n\ndrm_gem_handle_create_tail() drops the handle reference on all of its\ninternal error paths, so the caller only has to drop its own. Use\ndrm_gem_object_put(), matching the success path below."
}
],
"lastModified": "2026-10-19T10:19:22.927",
"sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
}