CVE-2026-74419

Local memory corruption via oversized ioctl copies

Published Aug 15, 2026 · Updated Aug 15, 2026

Out-of-bounds writes in the AMD XDNA driver in Linux 6.14 through 7.1.4 allow local users to corrupt process memory via query ioctls. Affected handlers pass full structure or response lengths to copy_to_user() without limiting each copy to the caller-provided buffer_size. Access to the AMD NPU acceleration device is required; crafted short buffers overwrite adjacent mappings, enabling a crash or code execution in the calling process.

CVSS severity7.3
High
EPSS probability0.11%
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 writes in the AMD XDNA driver in Linux 6.14 through 7.1.4 allow local users to corrupt process memory via query ioctls. Affected handlers pass full structure or response lengths to copy_to_user() without limiting each copy to the caller-provided buffer_size. Access to the AMD NPU acceleration device is required; crafted short buffers overwrite adjacent mappings, enabling a crash or code execution in the calling process.

The record

CVE
CVE-2026-74419
Published
Aug 15, 2026
Updated
Aug 15, 2026
Vendor
The Linux Kernel Organization
Product
Linux
Classifications
Unavailable
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. Aug 15, 2026CVE publishedPublication date reported by the CVE source.
  2. Aug 15, 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=6.14
  2. Affected versionversion=850d71f6bf4c2010efae845f9ff841cce902f22c <097e57195ef813735c8b714d6503bf3ad0742515
  3. Affected versionversion=850d71f6bf4c2010efae845f9ff841cce902f22c <6e87001fe19f251e2ae14373bc76554358a13df2

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

The Linux Kernel Organization · Linuxversion=6.14; version=850d71f6bf4c2010efae845f9ff841cce902f22c <097e57195ef813735c8b714d6503bf3ad0742515; version=850d71f6bf4c2010efae845f9ff841cce902f22c <6e87001fe19f251e2ae14373bc76554358a13df2

Published CVSS scores

3.3Amazon LinuxCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N
3.3SUSECVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N
4.8SUSECVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N
7.3Linux Kernel CNACVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:L

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

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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