CVE-2024-46870

System hang via DMCUB timeout race

Published Oct 9, 2024 · Updated May 11, 2026

Race condition in the AMD DCN35 display driver in Linux allows local users to cause a system hang through display activity. A delayed DMCUB command reaches the software timeout, after which the driver continues and accesses DCN state while IPS has made that state inaccessible. Affected systems require AMD DCN35 display hardware with IPS active; the race can hang the host or leave its display configuration undefined.

CVSS severity4.7
Medium
EPSS probability0.13%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Race condition in the AMD DCN35 display driver in Linux allows local users to cause a system hang through display activity. A delayed DMCUB command reaches the software timeout, after which the driver continues and accesses DCN state while IPS has made that state inaccessible. Affected systems require AMD DCN35 display hardware with IPS active; the race can hang the host or leave its display configuration undefined.

The record

CVE
CVE-2024-46870
Published
Oct 9, 2024
Updated
May 11, 2026
Vendor
The Linux Kernel Organization
Product
Linux
Classifications
CWE-362, CAPEC-26, T1499.004
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. Oct 9, 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=4.15
  2. Affected versionversion=4562236b3bc0a28aeb6ee93b2d8a849a4c4e1c7c <31c254c9cd4b122a10db297124f867107a696d83
  3. Affected versionversion=4562236b3bc0a28aeb6ee93b2d8a849a4c4e1c7c <7c70e60fbf4bff1123f0e8d5cb1ae71df6164d7f

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

The Linux Kernel Organization · Linuxversion=4.15; version=4562236b3bc0a28aeb6ee93b2d8a849a4c4e1c7c <31c254c9cd4b122a10db297124f867107a696d83; version=4562236b3bc0a28aeb6ee93b2d8a849a4c4e1c7c <7c70e60fbf4bff1123f0e8d5cb1ae71df6164d7f

Published CVSS scores

4.7NIST NVDCVSS:3.1/AV:L/AC:H/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-362Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition')
CAPEC-26Leveraging Race Conditions
T1499.004Endpoint Denial of Service: Application or System Exploitation

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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