CVE-2026-80597

Kernel crash via missing MTD parent linkage

Published Aug 28, 2026 · Updated Aug 28, 2026

NULL pointer dereference in the Linux vmu-flash MTD driver allows attackers to crash the kernel while a Dreamcast VMU is probed. vmu_queryblocks leaves the embedded mtd_info device without a parent before MTD registration dereferences that missing link. The path requires CONFIG_MTD_VMU and physical Dreamcast VMU probing, limiting the consequence to a kernel availability interruption.

CVSS severityUnavailable
Unscored
EPSS probability0.18%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

NULL pointer dereference in the Linux vmu-flash MTD driver allows attackers to crash the kernel while a Dreamcast VMU is probed. vmu_queryblocks leaves the embedded mtd_info device without a parent before MTD registration dereferences that missing link. The path requires CONFIG_MTD_VMU and physical Dreamcast VMU probing, limiting the consequence to a kernel availability interruption.

The record

CVE
CVE-2026-80597
Published
Aug 28, 2026
Updated
Aug 28, 2026
Vendor
The Linux Kernel Organization
Product
Linux
Classifications
Unavailable
Attack vector
Unavailable
Privileges
Unavailable

Timeline

How it unfolded

  1. Aug 28, 2026CVE publishedPublication date reported by the CVE source.
  2. Aug 28, 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=2.6.30
  2. Affected versionversion=47a72688fae7298e1ad5fdc9bff7e04b6a549620 <0db62da830ec57ad3efe24337763c8bf5442c6be
  3. Affected versionversion=47a72688fae7298e1ad5fdc9bff7e04b6a549620 <357e3b8e3a8769ba36eb8ec5e053e4825f1a9329
  4. Affected versionversion=47a72688fae7298e1ad5fdc9bff7e04b6a549620 <44c6abf5d823de796319d6e23c282ed5b68dc41b
  5. Affected versionversion=47a72688fae7298e1ad5fdc9bff7e04b6a549620 <9ac007affa77c3dc3def53760e3d69c350fc9967
  6. Affected versionversion=47a72688fae7298e1ad5fdc9bff7e04b6a549620 <b80a7b8f1a10e9270160b9d33f1253da2195c827
  7. Affected versionversion=47a72688fae7298e1ad5fdc9bff7e04b6a549620 <c60a627edbbd66bfbb0a0f564e64084c23c7ce98
  8. Affected versionversion=47a72688fae7298e1ad5fdc9bff7e04b6a549620 <f4599793240dd60a0a708ef1fe116223f47aa105
  9. Affected versionversion=47a72688fae7298e1ad5fdc9bff7e04b6a549620 <ff6453502c722437e37238900c9e45a1fec34455

What conditions does exploitation require?

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

What is affected?

The Linux Kernel Organization · Linuxversion=2.6.30; version=47a72688fae7298e1ad5fdc9bff7e04b6a549620 <0db62da830ec57ad3efe24337763c8bf5442c6be; version=47a72688fae7298e1ad5fdc9bff7e04b6a549620 <357e3b8e3a8769ba36eb8ec5e053e4825f1a9329; version=47a72688fae7298e1ad5fdc9bff7e04b6a549620 <44c6abf5d823de796319d6e23c282ed5b68dc41b; version=47a72688fae7298e1ad5fdc9bff7e04b6a549620 <9ac007affa77c3dc3def53760e3d69c350fc9967; version=47a72688fae7298e1ad5fdc9bff7e04b6a549620 <b80a7b8f1a10e9270160b9d33f1253da2195c827; version=47a72688fae7298e1ad5fdc9bff7e04b6a549620 <c60a627edbbd66bfbb0a0f564e64084c23c7ce98; version=47a72688fae7298e1ad5fdc9bff7e04b6a549620 <f4599793240dd60a0a708ef1fe116223f47aa105; version=47a72688fae7298e1ad5fdc9bff7e04b6a549620 <ff6453502c722437e37238900c9e45a1fec34455

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.

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)
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.

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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