CVE-2026-93081
In the Linux kernel, the following vulnerability has been resolved:
firmware: arm_scmi: Fix SCMI device destroy lifetimes
scmi_child_dev_find() drops the reference returned by device_find_child() before returning the scmi_device pointer. A concurrent unregister can then release the device while the destroy path is still using the returned pointer.
Make the lookup helper return the device_find_child() reference and keep it until scmi_device_destroy() has finished unregistering the child.
Also split device_unregister() in __scmi_device_destroy() so the SCMI bus ID is not made reusable until after device_del() has removed the old scmi_dev.N name from sysfs. This avoids a new SCMI device reusing the same ID while the old device is still registered.
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The final device release callback is also a possible cleanup path when SCMI children are deleted by driver core recursion rather than __scmi_device_destroy(). Release the SCMI bus ID from a common helper used by destroy, register-failure and final-release paths, and clear scmi_dev->id after freeing it so the final release cannot free the same ID again.
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: 0.19%
- Percentil entre todas las CVEs puntuadas: 8
- 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)
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{
"id": "CVE-2026-93081",
"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": "9ca67840c0ddf3f39407339624cef824a4f27599",
"lessThan": "c59b3393df1348a12308aaabd5fbc58ed6b21cf5",
"versionType": "git"
},
{
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{
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{
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"version": "ff4273d47da81b95ed9396110bcbd1b7b7470fe8",
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{
"status": "affected",
"version": "2fbf6c9695ad9f05e7e5c166bf43fac7cb3276b3",
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{
"status": "affected",
"version": "969d8beaa2e374387bf9aa5602ef84fc50bb48d8",
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{
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"version": "8a8a3547d5c4960da053df49c75bf623827a25da",
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{
"status": "affected",
"version": "5.15.182",
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},
{
"status": "affected",
"version": "6.1.138",
"lessThan": "6.2",
"versionType": "semver"
},
{
"status": "affected",
"version": "6.6.90",
"lessThan": "6.7",
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},
{
"status": "affected",
"version": "6.12.28",
"lessThan": "6.13",
"versionType": "semver"
},
{
"status": "affected",
"version": "6.14.6",
"lessThan": "6.15",
"versionType": "semver"
}
],
"programFiles": [
"drivers/firmware/arm_scmi/bus.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": "7.2.6",
"versionType": "semver",
"lessThanOrEqual": "7.2.*"
},
{
"status": "unaffected",
"version": "7.3-rc1",
"versionType": "original_commit_for_fix",
"lessThanOrEqual": "*"
}
],
"programFiles": [
"drivers/firmware/arm_scmi/bus.c"
],
"defaultStatus": "affected"
}
]
}
],
"published": "2026-09-17T17:18:02.063",
"references": [
{
"url": "https://git.kernel.org/stable/c/6abe8fe36b29ff51d1a42c2f338972883f4751a5",
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
},
{
"url": "https://git.kernel.org/stable/c/c59b3393df1348a12308aaabd5fbc58ed6b21cf5",
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
}
],
"vulnStatus": "Received",
"descriptions": [
{
"lang": "en",
"value": "In the Linux kernel, the following vulnerability has been resolved:\n\nfirmware: arm_scmi: Fix SCMI device destroy lifetimes\n\nscmi_child_dev_find() drops the reference returned by\ndevice_find_child() before returning the scmi_device pointer. A\nconcurrent unregister can then release the device while the destroy path\nis still using the returned pointer.\n\nMake the lookup helper return the device_find_child() reference and keep\nit until scmi_device_destroy() has finished unregistering the child.\n\nAlso split device_unregister() in __scmi_device_destroy() so the SCMI bus\nID is not made reusable until after device_del() has removed the old\nscmi_dev.N name from sysfs. This avoids a new SCMI device reusing the\nsame ID while the old device is still registered.\n\nThe final device release callback is also a possible cleanup path when\nSCMI children are deleted by driver core recursion rather than\n__scmi_device_destroy(). Release the SCMI bus ID from a common helper\nused by destroy, register-failure and final-release paths, and clear\nscmi_dev->id after freeing it so the final release cannot free the same\nID again."
}
],
"lastModified": "2026-09-17T17:18:02.063",
"sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
}