CVE-2024-43914

Kernel panic via stale RAID reshape position

Published Aug 26, 2024 · Updated May 11, 2026

Reachable assertion in the Linux kernel from 2.6.30 before branch-specific fixes allows local users to trigger a panic during RAID5 reshape. The reshape_request path calculates writepos from an old reshape position retained in the superblock after raid_disks is reduced and then reaches BUG_ON when validation fails. The condition requires a reassembled RAID5 array left with inconsistent metadata by mdadm --revert-reshape, and reaching it interrupts the host.

CVSS severity5.5
Medium
EPSS probability0.23%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Reachable assertion in the Linux kernel from 2.6.30 before branch-specific fixes allows local users to trigger a panic during RAID5 reshape. The reshape_request path calculates writepos from an old reshape position retained in the superblock after raid_disks is reduced and then reaches BUG_ON when validation fails. The condition requires a reassembled RAID5 array left with inconsistent metadata by mdadm --revert-reshape, and reaching it interrupts the host.

The record

CVE
CVE-2024-43914
Published
Aug 26, 2024
Updated
May 11, 2026
Vendor
The Linux Kernel Organization
Product
Linux
Classifications
CWE-617, T1499.004
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. Aug 26, 2024CVE 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=2.6.30
  2. Affected versionversion=ec32a2bd35bd6b933a5db6542c48210ce069a376 <2c92f8c1c456d556f15cbf51667b385026b2e6a0
  3. Affected versionversion=ec32a2bd35bd6b933a5db6542c48210ce069a376 <305a5170dc5cf3d395bb4c4e9239bca6d0b54b49
  4. Affected versionversion=ec32a2bd35bd6b933a5db6542c48210ce069a376 <3b33740c1750a39e046339ff9240e954f0156707
  5. Affected versionversion=ec32a2bd35bd6b933a5db6542c48210ce069a376 <4811d6e5d9f4090c3e0ff9890eb24077108046ab
  6. Affected versionversion=ec32a2bd35bd6b933a5db6542c48210ce069a376 <6b33c468d543f6a83de2d61f09fec74b27e19fd2
  7. Affected versionversion=ec32a2bd35bd6b933a5db6542c48210ce069a376 <775a9ba16c9ffe98fe54ebf14e55d5660f2bf600
  8. Affected versionversion=ec32a2bd35bd6b933a5db6542c48210ce069a376 <bf0ff69a42a3d2d46876d0514ecf13dffc516666
  9. Affected versionversion=ec32a2bd35bd6b933a5db6542c48210ce069a376 <c384dd4f1fb3b14a2fd199360701cc163ea88705

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

The Linux Kernel Organization · Linuxversion=2.6.30; version=ec32a2bd35bd6b933a5db6542c48210ce069a376 <2c92f8c1c456d556f15cbf51667b385026b2e6a0; version=ec32a2bd35bd6b933a5db6542c48210ce069a376 <305a5170dc5cf3d395bb4c4e9239bca6d0b54b49; version=ec32a2bd35bd6b933a5db6542c48210ce069a376 <3b33740c1750a39e046339ff9240e954f0156707; version=ec32a2bd35bd6b933a5db6542c48210ce069a376 <4811d6e5d9f4090c3e0ff9890eb24077108046ab; version=ec32a2bd35bd6b933a5db6542c48210ce069a376 <6b33c468d543f6a83de2d61f09fec74b27e19fd2; version=ec32a2bd35bd6b933a5db6542c48210ce069a376 <775a9ba16c9ffe98fe54ebf14e55d5660f2bf600; version=ec32a2bd35bd6b933a5db6542c48210ce069a376 <bf0ff69a42a3d2d46876d0514ecf13dffc516666; version=ec32a2bd35bd6b933a5db6542c48210ce069a376 <c384dd4f1fb3b14a2fd199360701cc163ea88705

Published CVSS scores

5.5Red HatCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
5.5NIST NVDCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
5.5UbuntuCVSS: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 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-617Reachable Assertion
T1499.004Application or System Exploitation DoS

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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