CVE-2026-90385
In the Linux kernel, the following vulnerability has been resolved:
md/raid1: create serial pool adding rdev to array with serialize_policy=1
The following bug has been observed with kernel 7.1.3 after adding a new rdev to an existing RAID1 array with serialize_policy enabled:
The raid1.c code calls wait_for_serialization() if the MD_SERIALIZE_POLICY is set, and wait_for_serialization assumes that rdev->serial is initialized. Normally this will be the case for arrays that have the serialize_policy sysfs attribute set to 1.
But when a new rdev is added to an existing array in bind_rdev_to_array(), the condition at mddev_create_serial_pool() causes creation of rdev->serial to be skipped. Fix it.
Detalles técnicos trazas, registros y código del informe original
Oops: 0002 [#1] CPU: 0 UID: 0 PID: 19639 Comm: ext4lazyinit Not tainted 7.1.3-1-default RIP: _raw_spin_lock_irqsave+0x27/0x50 CR2: 0000000000004960 Call Trace: wait_for_serialization+0xb9/0x260 [raid1] raid1_make_request+0x762/0xaff [raid1] md_handle_request+0x1c9/0x2e0 [md_mod]
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: 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
JSON original (NVD)
Mostrar
{
"id": "CVE-2026-90385",
"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": "69b00b5bb23552d43e8bbed73ef6624604bb94a2",
"lessThan": "f9e4364449f7ca6917f3599eb32064dba5b7b147",
"versionType": "git"
},
{
"status": "affected",
"version": "69b00b5bb23552d43e8bbed73ef6624604bb94a2",
"lessThan": "37f11973c3eb72a5eb061082cad529bb6939c24f",
"versionType": "git"
},
{
"status": "affected",
"version": "69b00b5bb23552d43e8bbed73ef6624604bb94a2",
"lessThan": "c02d675e81468003e4f2253b616c53729070d712",
"versionType": "git"
},
{
"status": "affected",
"version": "69b00b5bb23552d43e8bbed73ef6624604bb94a2",
"lessThan": "140234b2380ffb8ffb0cfc46fee0e822f43adef7",
"versionType": "git"
}
],
"programFiles": [
"drivers/md/md.c"
],
"defaultStatus": "unaffected"
},
{
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"product": "Linux",
"versions": [
{
"status": "affected",
"version": "5.6"
},
{
"status": "unaffected",
"version": "0",
"lessThan": "5.6",
"versionType": "semver"
},
{
"status": "unaffected",
"version": "6.12.110",
"versionType": "semver",
"lessThanOrEqual": "6.12.*"
},
{
"status": "unaffected",
"version": "6.18.52",
"versionType": "semver",
"lessThanOrEqual": "6.18.*"
},
{
"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/md/md.c"
],
"defaultStatus": "affected"
}
]
}
],
"published": "2026-09-17T17:17:37.880",
"references": [
{
"url": "https://git.kernel.org/stable/c/140234b2380ffb8ffb0cfc46fee0e822f43adef7",
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
},
{
"url": "https://git.kernel.org/stable/c/37f11973c3eb72a5eb061082cad529bb6939c24f",
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
},
{
"url": "https://git.kernel.org/stable/c/c02d675e81468003e4f2253b616c53729070d712",
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
},
{
"url": "https://git.kernel.org/stable/c/f9e4364449f7ca6917f3599eb32064dba5b7b147",
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
}
],
"vulnStatus": "Received",
"descriptions": [
{
"lang": "en",
"value": "In the Linux kernel, the following vulnerability has been resolved:\n\nmd/raid1: create serial pool adding rdev to array with serialize_policy=1\n\nThe following bug has been observed with kernel 7.1.3 after adding a new\nrdev to an existing RAID1 array with serialize_policy enabled:\n\n Oops: 0002 [#1]\n CPU: 0 UID: 0 PID: 19639 Comm: ext4lazyinit Not tainted 7.1.3-1-default\n RIP: _raw_spin_lock_irqsave+0x27/0x50\n CR2: 0000000000004960\n Call Trace:\n wait_for_serialization+0xb9/0x260 [raid1]\n raid1_make_request+0x762/0xaff [raid1]\n md_handle_request+0x1c9/0x2e0 [md_mod]\n\nThe raid1.c code calls wait_for_serialization() if the MD_SERIALIZE_POLICY\nis set, and wait_for_serialization assumes that rdev->serial is\ninitialized. Normally this will be the case for arrays that have\nthe serialize_policy sysfs attribute set to 1.\n\nBut when a new rdev is added to an existing array in bind_rdev_to_array(),\nthe condition at mddev_create_serial_pool() causes creation of rdev->serial\nto be skipped. Fix it."
}
],
"lastModified": "2026-09-17T17:17:37.880",
"sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
}