CVE-2026-90385

Kernel crash via uninitialized RAID1 serialization pool

Published Sep 17, 2026 · Updated Sep 17, 2026

Linux 7.1.3 md/raid1 initialization failure allows local users to crash the kernel via addition of a RAID1 member device. During bind_rdev_to_array(), mddev_create_serial_pool() skips initializing rdev->serial, which wait_for_serialization() subsequently assumes exists. Triggering requires privileged array modification with serialize_policy set to 1; the reported result is a kernel oops during RAID1 I/O.

CVSS severity6.7
Medium
EPSS probability0.20%
Next 30 days · Oct 18, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Linux 7.1.3 md/raid1 initialization failure allows local users to crash the kernel via addition of a RAID1 member device. During bind_rdev_to_array(), mddev_create_serial_pool() skips initializing rdev->serial, which wait_for_serialization() subsequently assumes exists. Triggering requires privileged array modification with serialize_policy set to 1; the reported result is a kernel oops during RAID1 I/O.

The record

CVE
CVE-2026-90385
Published
Sep 17, 2026
Updated
Sep 17, 2026
Vendor
The Linux Kernel Organization
Product
Linux
Classifications
T1499.004
Attack vector
local
Privileges
admin

Timeline

How it unfolded

  1. Sep 17, 2026CVE publishedPublication date reported by the CVE source.
  2. Sep 17, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=5.6
  2. Affected versionversion=69b00b5bb23552d43e8bbed73ef6624604bb94a2 <140234b2380ffb8ffb0cfc46fee0e822f43adef7
  3. Affected versionversion=69b00b5bb23552d43e8bbed73ef6624604bb94a2 <37f11973c3eb72a5eb061082cad529bb6939c24f
  4. Affected versionversion=69b00b5bb23552d43e8bbed73ef6624604bb94a2 <c02d675e81468003e4f2253b616c53729070d712
  5. Affected versionversion=69b00b5bb23552d43e8bbed73ef6624604bb94a2 <f9e4364449f7ca6917f3599eb32064dba5b7b147

What conditions does exploitation require?

Attack vectorlocal
Required privilegesadmin

What is affected?

The Linux Kernel Organization · Linuxversion=5.6; version=69b00b5bb23552d43e8bbed73ef6624604bb94a2 <140234b2380ffb8ffb0cfc46fee0e822f43adef7; version=69b00b5bb23552d43e8bbed73ef6624604bb94a2 <37f11973c3eb72a5eb061082cad529bb6939c24f; version=69b00b5bb23552d43e8bbed73ef6624604bb94a2 <c02d675e81468003e4f2253b616c53729070d712; version=69b00b5bb23552d43e8bbed73ef6624604bb94a2 <f9e4364449f7ca6917f3599eb32064dba5b7b147

Published CVSS scores

4.4Amazon LinuxCVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H
6.7SUSECVSS:4.0/AV:L/AC:L/AT:N/PR:H/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N
4.4SUSECVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Activity data is delayed. The latest report is Sep 28, 2026.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 22, 2026Sep 28, 2026
Latest reporting daySep 28, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectorlocal
Privilegesadmin
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

T1499.004Application or System Exploitation

Public exploit references

No public exploit references are available in this record.

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Technologies

Your stack

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Your stack

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