CVE-2026-72156

Kernel crash via zero-size FPGA header

Published Aug 15, 2026 · Updated Aug 15, 2026

Out-of-bounds read in the Microchip SPI FPGA driver in Linux allows local users to crash the kernel via a crafted bitstream. mpf_ops_parse_header() subtracts one from the untrusted header_size before dereferencing the bitstream buffer, so zero reads one byte before the buffer. Reaching the parser requires local access to submit an FPGA image to the Microchip SPI FPGA manager, and the bounded reported consequence is a kernel crash.

CVSS severity5.5
Medium
EPSS probability0.21%
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 read in the Microchip SPI FPGA driver in Linux allows local users to crash the kernel via a crafted bitstream. mpf_ops_parse_header() subtracts one from the untrusted header_size before dereferencing the bitstream buffer, so zero reads one byte before the buffer. Reaching the parser requires local access to submit an FPGA image to the Microchip SPI FPGA manager, and the bounded reported consequence is a kernel crash.

The record

CVE
CVE-2026-72156
Published
Aug 15, 2026
Updated
Aug 15, 2026
Vendor
The Linux Kernel Organization
Product
Linux
Classifications
CWE-125, T1499.004
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=5f8d4a9008307e0bf210906948953386935d361c <0d3766fecd9b2db39a18b48021c15c522997ec25
  2. Affected versionversion=5f8d4a9008307e0bf210906948953386935d361c <3da8eaf5469eda2353b72038d644fabddb848ce1
  3. Affected versionversion=5f8d4a9008307e0bf210906948953386935d361c <43a1974da6bc7ce8f4d1dc1d03d56997428c29c3
  4. Affected versionversion=5f8d4a9008307e0bf210906948953386935d361c <a1baee24df72ec8fd1d6925c1d5162ffff4ee3bf
  5. Affected versionversion=5f8d4a9008307e0bf210906948953386935d361c <c9ef79e34bc1eac4fd59051e5c7b96a74e59d46f
  6. Affected versionversion=5f8d4a9008307e0bf210906948953386935d361c <e45ec24d8e986d79a8e07f49a816c414ad283622
  7. Affected versionversion=6.0

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

The Linux Kernel Organization · Linuxversion=5f8d4a9008307e0bf210906948953386935d361c <0d3766fecd9b2db39a18b48021c15c522997ec25; version=5f8d4a9008307e0bf210906948953386935d361c <3da8eaf5469eda2353b72038d644fabddb848ce1; version=5f8d4a9008307e0bf210906948953386935d361c <43a1974da6bc7ce8f4d1dc1d03d56997428c29c3; version=5f8d4a9008307e0bf210906948953386935d361c <a1baee24df72ec8fd1d6925c1d5162ffff4ee3bf; version=5f8d4a9008307e0bf210906948953386935d361c <c9ef79e34bc1eac4fd59051e5c7b96a74e59d46f; version=5f8d4a9008307e0bf210906948953386935d361c <e45ec24d8e986d79a8e07f49a816c414ad283622; version=6.0

Published CVSS scores

5.5Red HatCVSS: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

CWE-125Out-of-bounds Read
T1499.004Endpoint Denial of Service: Application or System Exploitation

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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