CVE-2024-49970

Local DoS via unchecked stream encoder index

Published Oct 21, 2024 · Updated May 11, 2026

Improper array indexing in Linux 4.15 through 6.11.2 allows local users to make systems unavailable through the AMD DCN401 display driver. dcn401_stream_encoder_create uses eng_id to index the four-entry stream_enc_regs array without rejecting values above 3, causing an out-of-bounds access when the index is 5. Low-privileged local access and an AMD DCN401 display path are required; no data disclosure or modification impact is published.

CVSS severity5.5
Medium
EPSS probability0.22%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Improper array indexing in Linux 4.15 through 6.11.2 allows local users to make systems unavailable through the AMD DCN401 display driver. dcn401_stream_encoder_create uses eng_id to index the four-entry stream_enc_regs array without rejecting values above 3, causing an out-of-bounds access when the index is 5. Low-privileged local access and an AMD DCN401 display path are required; no data disclosure or modification impact is published.

The record

CVE
CVE-2024-49970
Published
Oct 21, 2024
Updated
May 11, 2026
Vendor
The Linux Kernel Organization
Product
Linux
Classifications
CWE-129, T1499
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. Oct 21, 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 <b219b46ad42df1dea9258788bcfea37181f3ccb2
  3. Affected versionversion=4562236b3bc0a28aeb6ee93b2d8a849a4c4e1c7c <bdf606810210e8e07a0cdf1af3c467291363b295

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

The Linux Kernel Organization · Linuxversion=4.15; version=4562236b3bc0a28aeb6ee93b2d8a849a4c4e1c7c <b219b46ad42df1dea9258788bcfea37181f3ccb2; version=4562236b3bc0a28aeb6ee93b2d8a849a4c4e1c7c <bdf606810210e8e07a0cdf1af3c467291363b295

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.

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-129Improper Validation of Array Index
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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