CVE-2026-90047

Display-service interruption via misallocated CCS storage

Published Sep 16, 2026 · Updated Sep 16, 2026

Memory corruption in Linux 6.13 causes a persistent black screen during cold boot on affected Intel Battlemage G21 systems. get_flat_ccs_offset() rounds the hardware-reported flat CCS base upward and gives the intervening compression-owned bytes to the VRAM allocator. The condition requires a nonaligned flat CCS base; compression metadata can then overwrite an allocated page-table tail and repeatedly restart the display manager.

CVSS severityUnavailable
Unscored
EPSS probabilityUnavailable
No score available in this record
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Memory corruption in Linux 6.13 causes a persistent black screen during cold boot on affected Intel Battlemage G21 systems. get_flat_ccs_offset() rounds the hardware-reported flat CCS base upward and gives the intervening compression-owned bytes to the VRAM allocator. The condition requires a nonaligned flat CCS base; compression metadata can then overwrite an allocated page-table tail and repeatedly restart the display manager.

The record

CVE
CVE-2026-90047
Published
Sep 16, 2026
Updated
Sep 16, 2026
Vendor
The Linux Kernel Organization
Product
Linux
Classifications
Unavailable
Attack vector
Unavailable
Privileges
Unavailable

Timeline

How it unfolded

  1. Sep 16, 2026CVE publishedPublication date reported by the CVE source.
  2. Sep 16, 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=37173392741c425191b959acb3adf70c9a4610c0 <348c3db4f1520d36764ac8cae2492f50599714f6
  2. Affected versionversion=37173392741c425191b959acb3adf70c9a4610c0 <818bebeb63dd6bf5f4e07e145f6cdbace520a34c
  3. Affected versionversion=37173392741c425191b959acb3adf70c9a4610c0 <c96477e0cabf55bfbdf078078e9de1c8024f8060
  4. Affected versionversion=6.13

What conditions does exploitation require?

Attack vectorUnavailable in this record.
Required privilegesUnavailable in this record.

What is affected?

The Linux Kernel Organization · Linuxversion=37173392741c425191b959acb3adf70c9a4610c0 <348c3db4f1520d36764ac8cae2492f50599714f6; version=37173392741c425191b959acb3adf70c9a4610c0 <818bebeb63dd6bf5f4e07e145f6cdbace520a34c; version=37173392741c425191b959acb3adf70c9a4610c0 <c96477e0cabf55bfbdf078078e9de1c8024f8060; version=6.13

Published CVSS scores

No CVSS assessment is available in this record.

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)
VectorUnavailable
PrivilegesUnavailable
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

No sourced classifications are available.

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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