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VulnerabilityPublished Updated

CVE-2026-90385: Linux kernel · md/raid1: create serial pool adding rdev to array with serialize_policy=1

Source GCVE Database

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Authoritative record:CVE-2026-90385· Medium

Not known to be exploited · fixed in f9e4364449f7ca6917f3599eb32064dba5b7b147 : update Linux kernel when convenient.

Data as of 30 Oct 2026, 18:21 UTC

Severity
Medium

Rated Medium by Threat Radar's AI analysis · CVSS not yet scored by NVD

Thin evidence

One scorer or none
Patch
Available – fixed in f9e4364449f7ca6917f3599eb32064dba5b7b147, c02d675e81468003e4f2253b616c53729070d712, 140234b2380ffb8ffb0cfc46fee0e822f43adef7 +3

Exploitation evidence

  1. Disclosed: evidence found.

    CVE published 17 Sep 2026

  2. Detectable: no evidence on record.

    No public nuclei template indexed

  3. Weaponized: no evidence on record.

    No public exploit code indexed in Metasploit or Exploit-DB

  4. Exploited in the wild: no evidence on record.

    Not in CISA KEV and no source reports exploitation

  5. Observed by OffSeq Mirage: no evidence on record.

    No attack traffic recorded by OffSeq Mirage sensors

A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 30 Oct 2026.

What to do

Upgrade to a fixed release listed under Affected software.

Affected software

ProductAffectedFixed in
LinuxLinuxAffected
  • ≥ 69b00b5bb23552d43e8bbed73ef6624604bb94a2, < f9e4364449f7ca6917f3599eb32064dba5b7b147
Fixed in
  • f9e4364449f7ca6917f3599eb32064dba5b7b147
LinuxLinuxAffected
  • ≥ 69b00b5bb23552d43e8bbed73ef6624604bb94a2, < c02d675e81468003e4f2253b616c53729070d712
Fixed in
  • c02d675e81468003e4f2253b616c53729070d712
LinuxLinuxAffected
  • ≥ 69b00b5bb23552d43e8bbed73ef6624604bb94a2, < 140234b2380ffb8ffb0cfc46fee0e822f43adef7
Fixed in
  • 140234b2380ffb8ffb0cfc46fee0e822f43adef7
LinuxLinuxAffected
  • ≥ 69b00b5bb23552d43e8bbed73ef6624604bb94a2, < 37f11973c3eb72a5eb061082cad529bb6939c24f
Fixed in
  • 37f11973c3eb72a5eb061082cad529bb6939c24f
LinuxLinuxAffected
  • ≥ 69b00b5bb23552d43e8bbed73ef6624604bb94a2, < 6ea458171bed2b706dc7bcd80b15356c0e9ed718
Fixed in
  • 6ea458171bed2b706dc7bcd80b15356c0e9ed718
LinuxLinuxAffected
  • ≥ 69b00b5bb23552d43e8bbed73ef6624604bb94a2, < 0b187e14dab458d54425fc400f1e1e8d481d9bcf
Fixed in
  • 0b187e14dab458d54425fc400f1e1e8d481d9bcf

AI-suggested

A fix has been implemented to ensure proper initialization of rdev->serial when adding new devices to RAID1 arrays with serialize_policy=1. Users should update to a kernel version that includes this fix.

Description

A vulnerability in the Linux kernel's md/raid1 subsystem was fixed involving the creation of a serial pool when adding a new rdev (raid device) to an existing RAID1 array with serialize_policy enabled. The issue caused a kernel oops due to an uninitialized rdev->serial pointer, leading to a crash when serialization was expected. This was observed in kernel version 7.1.3. The flaw was due to a skipped initialization in mddev_create_serial_pool() when adding a new device, which was corrected.

References

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