CVE-2025-38080

Kernel memory corruption via display sequence overflow

Published Jun 18, 2025 · Updated Aug 5, 2026

Out-of-bounds write in affected Linux kernels allows local users to read or write kernel memory and crash systems via AMD GPU atomic commits. hwss_build_fast_sequence appends more than 50 entries to the fixed block_sequence array without a bounds check, overwriting its counter and adjacent kernel data. Reachability requires local DRM primary-node access and a supported six-pipe AMD display configuration; no race or network path is involved.

CVSS severity7.8
High
EPSS probability0.16%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Out-of-bounds write in affected Linux kernels allows local users to read or write kernel memory and crash systems via AMD GPU atomic commits. hwss_build_fast_sequence appends more than 50 entries to the fixed block_sequence array without a bounds check, overwriting its counter and adjacent kernel data. Reachability requires local DRM primary-node access and a supported six-pipe AMD display configuration; no race or network path is involved.

The record

CVE
CVE-2025-38080
Published
Jun 18, 2025
Updated
Aug 5, 2026
Vendor
The Linux Kernel Organization
Product
Linux
Classifications
T1499
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. Jun 18, 2025CVE publishedPublication date reported by the CVE source.
  2. Aug 5, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

Compare your product and version with the public record. A matching version still requires validation against your environment.

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 <3a7810c212bcf2f722671dadf4b23ff70a7d23ee
  3. Affected versionversion=4562236b3bc0a28aeb6ee93b2d8a849a4c4e1c7c <bf1666072e7482317cf2302621766482a21a62c7
  4. Affected versionversion=4562236b3bc0a28aeb6ee93b2d8a849a4c4e1c7c <de67e80ab48f1f23663831007a2fa3c1471a7757
  5. Affected versionversion=4562236b3bc0a28aeb6ee93b2d8a849a4c4e1c7c <e55c5704b12eeea27e212bfab8f7e51ad3e8ac1f

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

The Linux Kernel Organization · Linuxversion=4.15; version=4562236b3bc0a28aeb6ee93b2d8a849a4c4e1c7c <3a7810c212bcf2f722671dadf4b23ff70a7d23ee; version=4562236b3bc0a28aeb6ee93b2d8a849a4c4e1c7c <bf1666072e7482317cf2302621766482a21a62c7; version=4562236b3bc0a28aeb6ee93b2d8a849a4c4e1c7c <de67e80ab48f1f23663831007a2fa3c1471a7757; version=4562236b3bc0a28aeb6ee93b2d8a849a4c4e1c7c <e55c5704b12eeea27e212bfab8f7e51ad3e8ac1f

Published CVSS scores

5.5NIST NVDCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
7.8Linux kernel CNACVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/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

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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