md/raid1: create serial pool adding rdev to array with serialize_policy=1
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: 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] 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.
CVE-2026-90385
Primary source · Revision 1
Imported from structured advisory data. Source references identify upstream records or fields; verify affected versions and your deployed configuration.
Security context
Source reference: cve:CVE-2026-90385
Linux
Source reference: /containers/cna/affected/0/product
- Affected versions
- Not stated in this record
- Fixed versions
- Not stated in this record
- Prerequisites
- Not stated in this record
Linux
Source reference: /containers/cna/affected/1/product
- Affected versions
- Not stated in this record
- Fixed versions
- Not stated in this record
- Prerequisites
- Not stated in this record
Structured affected-version data
Original package identities and version rules from this source.
[
{
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"product": "Linux",
"versions": [
{
"status": "affected",
"version": "69b00b5bb23552d43e8bbed73ef6624604bb94a2",
"lessThan": "0b187e14dab458d54425fc400f1e1e8d481d9bcf",
"versionType": "git"
},
{
"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": "6.6.160",
"versionType": "semver",
"lessThanOrEqual": "6.6.*"
},
{
"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",
"versionType": "original_commit_for_fix",
"lessThanOrEqual": "*"
}
],
"programFiles": [
"drivers/md/md.c"
],
"defaultStatus": "affected"
}
]- Related CVEs
- CVE-2026-90385
Source reference:
/cveMetadata/cveId
Publisher severity
No explicit severity was provided.
- Event
- #48685 · Revision 1
- Added to Heist Feed
- Publisher date