CVE-2023-53151

CPU soft lockup via unbounded RAID10 writeback

Published Sep 15, 2025 · Updated Sep 15, 2025

Denial of service in the Linux kernel RAID10 path allows local users to soft-lock a CPU by generating heavy writeback. The raid10d flush path processes an unbounded queue of plugged bios without calling cond_resched(), preventing the worker from yielding the CPU. A local low-privileged user must generate enough writes against an active RAID10 array; the resulting soft lockup interrupts scheduling and delays I/O.

CVSS severity5.5
Medium
EPSS probability0.12%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Denial of service in the Linux kernel RAID10 path allows local users to soft-lock a CPU by generating heavy writeback. The raid10d flush path processes an unbounded queue of plugged bios without calling cond_resched(), preventing the worker from yielding the CPU. A local low-privileged user must generate enough writes against an active RAID10 array; the resulting soft lockup interrupts scheduling and delays I/O.

The record

CVE
CVE-2023-53151
Published
Sep 15, 2025
Updated
Sep 15, 2025
Vendor
The Linux Kernel Organization
Product
Linux
Classifications
CWE-667, T1499.004
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. Sep 15, 2025CVE publishedPublication date reported by the CVE source.
  2. Sep 15, 2025Record 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=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <00ecb6fa67c0f772290c5ea5ae8b46eefd503b83
  2. Affected versionversion=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <010444623e7f4da6b4a4dd603a7da7469981e293
  3. Affected versionversion=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <1d467e10507167eb6dc2c281a87675b731955d86
  4. Affected versionversion=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <634daf6b2c81015cc5e28bf694a6a94a50c641cd
  5. Affected versionversion=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <84a578961b2566e475bfa8740beaf0abcc781a6f
  6. Affected versionversion=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <d0345f7c7dbc5d42e4e6f1db99c1c1879d7b0eb5
  7. Affected versionversion=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <f45b2fa7678ab385299de345f7e85d05caea386b
  8. Affected versionversion=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <fbf50184190d55f8717bd29aa9530c399be96f30

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

The Linux Kernel Organization · Linuxversion=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <00ecb6fa67c0f772290c5ea5ae8b46eefd503b83; version=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <010444623e7f4da6b4a4dd603a7da7469981e293; version=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <1d467e10507167eb6dc2c281a87675b731955d86; version=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <634daf6b2c81015cc5e28bf694a6a94a50c641cd; version=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <84a578961b2566e475bfa8740beaf0abcc781a6f; version=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <d0345f7c7dbc5d42e4e6f1db99c1c1879d7b0eb5; version=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <f45b2fa7678ab385299de345f7e85d05caea386b; version=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <fbf50184190d55f8717bd29aa9530c399be96f30

Published CVSS scores

5.5NIST NVDCVSS:3.1/AV:L/AC:L/PR:L/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.

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No observations available

Sep 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectorlocal
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-667Improper Locking
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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