CVE-2022-50211

Out-of-bounds read via unchecked RAID disk index

Published Jun 18, 2025 · Updated May 11, 2026

An out-of-bounds read in the Linux kernel md RAID10 driver allows local users to access memory beyond a mirrors array during RAID reshaping. raid10_remove_disk uses rdev->raid_disk as an offset into conf->mirrors before checking that it is below mddev->raid_disks, reading past the allocated array. The path arises while an md RAID10 array removes and adds spare disks during LVM RAID reshape recovery; upstream states that userspace cannot trigger it at will.

CVSS severity7.1
High
EPSS probability0.22%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

An out-of-bounds read in the Linux kernel md RAID10 driver allows local users to access memory beyond a mirrors array during RAID reshaping. raid10_remove_disk uses rdev->raid_disk as an offset into conf->mirrors before checking that it is below mddev->raid_disks, reading past the allocated array. The path arises while an md RAID10 array removes and adds spare disks during LVM RAID reshape recovery; upstream states that userspace cannot trigger it at will.

The record

CVE
CVE-2022-50211
Published
Jun 18, 2025
Updated
May 11, 2026
Vendor
The Linux Kernel Organization
Product
Linux
Classifications
CWE-125
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. Jun 18, 2025CVE publishedPublication date reported by the CVE source.
  2. May 11, 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=3.3
  2. Affected versionversion=b8321b68d1445f308324517e45fb0a5c2b48e271 <0f4d18cbea4a6e37a05fd8ee2887439f85211110
  3. Affected versionversion=b8321b68d1445f308324517e45fb0a5c2b48e271 <5f57843565131bb782388f9d993f9ee8f453dee1
  4. Affected versionversion=b8321b68d1445f308324517e45fb0a5c2b48e271 <5fd4ffa2372a41361d2bdd27ea5730e4e673240c
  5. Affected versionversion=b8321b68d1445f308324517e45fb0a5c2b48e271 <75fbd370a2cec9e92f48285bd90735ed0c837f52
  6. Affected versionversion=b8321b68d1445f308324517e45fb0a5c2b48e271 <7a6ccc8fa192fd357c2d5d4c6ce67c834a179e23
  7. Affected versionversion=b8321b68d1445f308324517e45fb0a5c2b48e271 <bcbdc26a44aba488d2f7122f2d66801bccb74733
  8. Affected versionversion=b8321b68d1445f308324517e45fb0a5c2b48e271 <bf30b9ba09b0ac2a10f04dce2b0835ec4d178aa6
  9. Affected versionversion=b8321b68d1445f308324517e45fb0a5c2b48e271 <ce839b9331c11780470f3d727b6fe3c2794a4620
  10. Affected versionversion=b8321b68d1445f308324517e45fb0a5c2b48e271 <d17f744e883b2f8d13cca252d71cfe8ace346f7d

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

The Linux Kernel Organization · Linuxversion=3.3; version=b8321b68d1445f308324517e45fb0a5c2b48e271 <0f4d18cbea4a6e37a05fd8ee2887439f85211110; version=b8321b68d1445f308324517e45fb0a5c2b48e271 <5f57843565131bb782388f9d993f9ee8f453dee1; version=b8321b68d1445f308324517e45fb0a5c2b48e271 <5fd4ffa2372a41361d2bdd27ea5730e4e673240c; version=b8321b68d1445f308324517e45fb0a5c2b48e271 <75fbd370a2cec9e92f48285bd90735ed0c837f52; version=b8321b68d1445f308324517e45fb0a5c2b48e271 <7a6ccc8fa192fd357c2d5d4c6ce67c834a179e23; version=b8321b68d1445f308324517e45fb0a5c2b48e271 <bcbdc26a44aba488d2f7122f2d66801bccb74733; version=b8321b68d1445f308324517e45fb0a5c2b48e271 <bf30b9ba09b0ac2a10f04dce2b0835ec4d178aa6; version=b8321b68d1445f308324517e45fb0a5c2b48e271 <ce839b9331c11780470f3d727b6fe3c2794a4620; version=b8321b68d1445f308324517e45fb0a5c2b48e271 <d17f744e883b2f8d13cca252d71cfe8ace346f7d

Published CVSS scores

7.1NIST NVDCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/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.

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No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectorlocal
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-125Out-of-bounds Read

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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