CVE-2026-43320

Kernel crash via unchecked DSC function hooks

Published May 8, 2026 · Updated May 8, 2026

A NULL pointer dereference in the Linux Kernel AMD display driver allows local users to crash systems during DSC setup for eDP panels. The clean_up_dsc_blocks function invokes set_dsc_config, dp_set_dsc_config, and dp_set_dsc_pps_info_packet without confirming that the hooks are initialized. The path requires AMD display hardware using DSC over an embedded DisplayPort panel; triggering it can panic or hang the kernel without exposing or modifying data.

CVSS severity5.5
Medium
EPSS probability0.12%
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 the Linux Kernel AMD display driver allows local users to crash systems during DSC setup for eDP panels. The clean_up_dsc_blocks function invokes set_dsc_config, dp_set_dsc_config, and dp_set_dsc_pps_info_packet without confirming that the hooks are initialized. The path requires AMD display hardware using DSC over an embedded DisplayPort panel; triggering it can panic or hang the kernel without exposing or modifying data.

The record

CVE
CVE-2026-43320
Published
May 8, 2026
Updated
May 8, 2026
Vendor
The Linux Kernel Organization
Product
Linux Kernel
Classifications
T1499
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. May 8, 2026CVE publishedPublication date reported by the CVE source.
  2. May 8, 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=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <0481be9f12d8324789ccebf1e5fd0704b6e3fc99
  2. Affected versionversion=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <11718976c53a258c4d107aa05d68773379d0006f
  3. Affected versionversion=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <878a4b73c11111ff5f820730f59a7f8c6fd59374
  4. Affected versionversion=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <c10fe9471f3aa352bb9d9329d0b25e28e0672243

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

The Linux Kernel Organization · Linux Kernelversion=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <0481be9f12d8324789ccebf1e5fd0704b6e3fc99; version=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <11718976c53a258c4d107aa05d68773379d0006f; version=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <878a4b73c11111ff5f820730f59a7f8c6fd59374; version=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <c10fe9471f3aa352bb9d9329d0b25e28e0672243

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.

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No observations available

Sep 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectorlocal
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

T1499Endpoint Denial of Service

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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