CVE-2026-97496

Kernel memory disclosure via unchecked MQD bounds

Published Sep 24, 2026 · Updated Sep 24, 2026

Out-of-bounds read in the Linux amdkfd driver allows local users to disclose adjacent kernel memory through the KFD process-restore path. The v9 get_wave_state() code trusts attacker-controlled MQD stack size and offset fields, then subtracts them and passes the unchecked length to copy_to_user(). Access to AMDKFD_IOC_RESTORE_PROCESS with H3 and compatible AMD GPU hardware is required; exposure includes other queues' MQDs, ring buffers, and KASLR pointers.

CVSS severityUnavailable
Unscored
EPSS probability0.13%
Next 30 days · Oct 19, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Out-of-bounds read in the Linux amdkfd driver allows local users to disclose adjacent kernel memory through the KFD process-restore path. The v9 get_wave_state() code trusts attacker-controlled MQD stack size and offset fields, then subtracts them and passes the unchecked length to copy_to_user(). Access to AMDKFD_IOC_RESTORE_PROCESS with H3 and compatible AMD GPU hardware is required; exposure includes other queues' MQDs, ring buffers, and KASLR pointers.

The record

CVE
CVE-2026-97496
Published
Sep 24, 2026
Updated
Sep 24, 2026
Vendor
The Linux Kernel Organization
Product
Linux
Classifications
Unavailable
Attack vector
local
Privileges
Unavailable

Timeline

How it unfolded

  1. Sep 24, 2026CVE publishedPublication date reported by the CVE source.
  2. Sep 24, 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=0 <6.12.111
  2. Affected versionversion=0 <6.18.53
  3. Affected versionversion=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <7ef144458f48d5589e36f1b3d83e83db2e5c5ba5
  4. Affected versionversion=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <d9183d974ddd5f09d029beaf359275ac20d4d5fe
  5. Affected versionversion=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <ec646686613d8ab05b282d1463a7baa49fd6b83b

What conditions does exploitation require?

Attack vectorlocal
Required privilegesUnavailable in this record.

What is affected?

The Linux Kernel Organization · Linuxversion=0 <6.12.111; version=0 <6.18.53; version=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <7ef144458f48d5589e36f1b3d83e83db2e5c5ba5; version=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <d9183d974ddd5f09d029beaf359275ac20d4d5fe; version=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <ec646686613d8ab05b282d1463a7baa49fd6b83b

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.

Activity data is delayed. The latest report is Sep 28, 2026.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 22, 2026Sep 28, 2026
Latest reporting daySep 28, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectorlocal
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.

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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