CVE-2024-40988

System crash via unchecked Radeon voltage index

Published Jul 12, 2024 · Updated May 11, 2026

Out-of-bounds write in affected Linux kernel Radeon releases allows local users to crash the system through an invalid voltage index. sumo_construct_vid_mapping_table() uses table[i].usVoltageIndex to index vid_mapping_table->entries without checking it against SUMO_MAX_NUMBER_VOLTAGES. Exploitation requires local low-privileged access and the affected Radeon power-table path; the reported consequence is service interruption.

CVSS severity5.5
Medium
EPSS probability0.28%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Out-of-bounds write in affected Linux kernel Radeon releases allows local users to crash the system through an invalid voltage index. sumo_construct_vid_mapping_table() uses table[i].usVoltageIndex to index vid_mapping_table->entries without checking it against SUMO_MAX_NUMBER_VOLTAGES. Exploitation requires local low-privileged access and the affected Radeon power-table path; the reported consequence is service interruption.

The record

CVE
CVE-2024-40988
Published
Jul 12, 2024
Updated
May 11, 2026
Vendor
The Linux Kernel Organization
Product
Linux
Classifications
CWE-119, T1499
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. Jul 12, 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=3.11
  2. Affected versionversion=80ea2c129c76a4159a93efeaef4385b6c964dfac <07e8f15fa16695cf4c90e89854e59af4a760055b
  3. Affected versionversion=80ea2c129c76a4159a93efeaef4385b6c964dfac <468a50fd46a09bba7ba18a11054ae64b6479ecdc
  4. Affected versionversion=80ea2c129c76a4159a93efeaef4385b6c964dfac <9e57611182a817824a17b1c3dd300ee74a174b42
  5. Affected versionversion=80ea2c129c76a4159a93efeaef4385b6c964dfac <a498df5421fd737d11bfd152428ba6b1c8538321
  6. Affected versionversion=80ea2c129c76a4159a93efeaef4385b6c964dfac <a8c6df9fe5bc390645d1e96eff14ffe414951aad
  7. Affected versionversion=80ea2c129c76a4159a93efeaef4385b6c964dfac <cf1cc8fcfe517e108794fb711f7faabfca0dc855
  8. Affected versionversion=80ea2c129c76a4159a93efeaef4385b6c964dfac <f803532bc3825384100dfc58873e035d77248447
  9. Affected versionversion=80ea2c129c76a4159a93efeaef4385b6c964dfac <febe794b83693257f21a23d2e03ea695a62449c8

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

The Linux Kernel Organization · Linuxversion=3.11; version=80ea2c129c76a4159a93efeaef4385b6c964dfac <07e8f15fa16695cf4c90e89854e59af4a760055b; version=80ea2c129c76a4159a93efeaef4385b6c964dfac <468a50fd46a09bba7ba18a11054ae64b6479ecdc; version=80ea2c129c76a4159a93efeaef4385b6c964dfac <9e57611182a817824a17b1c3dd300ee74a174b42; version=80ea2c129c76a4159a93efeaef4385b6c964dfac <a498df5421fd737d11bfd152428ba6b1c8538321; version=80ea2c129c76a4159a93efeaef4385b6c964dfac <a8c6df9fe5bc390645d1e96eff14ffe414951aad; version=80ea2c129c76a4159a93efeaef4385b6c964dfac <cf1cc8fcfe517e108794fb711f7faabfca0dc855; version=80ea2c129c76a4159a93efeaef4385b6c964dfac <f803532bc3825384100dfc58873e035d77248447; version=80ea2c129c76a4159a93efeaef4385b6c964dfac <febe794b83693257f21a23d2e03ea695a62449c8

Published CVSS scores

4.7Oracle LinuxCVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:U/C:N/I:L/A:H
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.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

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-119Improper Restriction of Operations within the Bounds of a Memory Buffer
T1499Endpoint Denial of Service

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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