CVE-2024-43899

System hang via unchecked compression callback

Published Aug 26, 2024 · Updated May 11, 2026

NULL pointer dereference in the Linux kernel amdgpu display driver allows local users to hang systems through fullscreen GPU playback. The dcn20_get_dcc_compression_cap function unconditionally calls the hubbub get_dcc_compression_cap callback even when DCN401 leaves it unset. Triggering the fault requires local graphical access, a DCN401 discrete GPU, and VA-API hardware-decoded video transitioning to fullscreen; the result is a kernel fault and system hang.

CVSS severity5.5
Medium
EPSS probability0.21%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

NULL pointer dereference in the Linux kernel amdgpu display driver allows local users to hang systems through fullscreen GPU playback. The dcn20_get_dcc_compression_cap function unconditionally calls the hubbub get_dcc_compression_cap callback even when DCN401 leaves it unset. Triggering the fault requires local graphical access, a DCN401 discrete GPU, and VA-API hardware-decoded video transitioning to fullscreen; the result is a kernel fault and system hang.

The record

CVE
CVE-2024-43899
Published
Aug 26, 2024
Updated
May 11, 2026
Vendor
The Linux Kernel Organization
Product
Linux
Classifications
CWE-476, 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=4.15
  2. Affected versionversion=4562236b3bc0a28aeb6ee93b2d8a849a4c4e1c7c <6940c1d0c84a34d5a2038714c218238101a1db5b
  3. Affected versionversion=4562236b3bc0a28aeb6ee93b2d8a849a4c4e1c7c <974fccd61758599a9716c4b909d9226749efe37e
  4. Affected versionversion=4562236b3bc0a28aeb6ee93b2d8a849a4c4e1c7c <ecbf60782662f0a388493685b85a645a0ba1613c

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

The Linux Kernel Organization · Linuxversion=4.15; version=4562236b3bc0a28aeb6ee93b2d8a849a4c4e1c7c <6940c1d0c84a34d5a2038714c218238101a1db5b; version=4562236b3bc0a28aeb6ee93b2d8a849a4c4e1c7c <974fccd61758599a9716c4b909d9226749efe37e; version=4562236b3bc0a28aeb6ee93b2d8a849a4c4e1c7c <ecbf60782662f0a388493685b85a645a0ba1613c

Published CVSS scores

5.5NISTCVSS: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-476NULL Pointer Dereference
T1499.004Application 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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