CVE-2024-26847

Local system crash via RTAS name mismatch

Published Apr 17, 2024 · Updated May 11, 2026

A NULL pointer dereference in affected Linux kernel releases allows local users to crash PowerPC systems during RTAS calls. The PowerPC RTAS table records the plural ibm,reset-pe-dma-windows name while firmware exposes the singular name, causing reverse lookup to return NULL for the service token. Reachability requires affected PAPR firmware plus active RTAS tracepoints or lockdep; dereferencing the failed lookup causes a kernel oops and service interruption.

CVSS severity5.1
Medium
EPSS probability0.24%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

A NULL pointer dereference in affected Linux kernel releases allows local users to crash PowerPC systems during RTAS calls. The PowerPC RTAS table records the plural ibm,reset-pe-dma-windows name while firmware exposes the singular name, causing reverse lookup to return NULL for the service token. Reachability requires affected PAPR firmware plus active RTAS tracepoints or lockdep; dereferencing the failed lookup causes a kernel oops and service interruption.

The record

CVE
CVE-2024-26847
Published
Apr 17, 2024
Updated
May 11, 2026
Vendor
The Linux Kernel Organization
Product
Linux
Classifications
T1499.004
Attack vector
local
Privileges
unauthenticated

Timeline

How it unfolded

  1. Apr 17, 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=6.3
  2. Affected versionversion=8252b88294d2a744df6e3c6d85909ade403a5f2c <6b6282d56b14879124416a23837af9bd52ae2dfb
  3. Affected versionversion=8252b88294d2a744df6e3c6d85909ade403a5f2c <dd63817baf334888289877ab1db1d866af2a6479
  4. Affected versionversion=8252b88294d2a744df6e3c6d85909ade403a5f2c <fad87dbd48156ab940538f052f1820f4b6ed2819

What conditions does exploitation require?

Attack vectorlocal
Required privilegesunauthenticated

What is affected?

The Linux Kernel Organization · Linuxversion=6.3; version=8252b88294d2a744df6e3c6d85909ade403a5f2c <6b6282d56b14879124416a23837af9bd52ae2dfb; version=8252b88294d2a744df6e3c6d85909ade403a5f2c <dd63817baf334888289877ab1db1d866af2a6479; version=8252b88294d2a744df6e3c6d85909ade403a5f2c <fad87dbd48156ab940538f052f1820f4b6ed2819

Published CVSS scores

5.1CISA-ADPCVSS:3.1/AV:L/AC:H/PR:N/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
Privilegesunauthenticated
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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