CVE-2026-72130Network attack vector

Kernel memory corruption via short AUTH_RECEIVE buffer

Published Aug 15, 2026 · Updated Aug 15, 2026

Heap out-of-bounds write in Linux 6.0 and later allows remote attackers to corrupt kernel memory through a short AUTH_RECEIVE buffer. nvmet_execute_auth_receive() allocates the host-specified length, then nvmet_auth_success1() or nvmet_auth_failure1() formats a larger fixed response despite only warning about the mismatch. An NVMe-oF initiator can overwrite 16 heap bytes before authentication only when the target has in-band DH-HMAC-CHAP configured.

CVSS severity9.8
Critical
EPSS probability0.75%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Heap out-of-bounds write in Linux 6.0 and later allows remote attackers to corrupt kernel memory through a short AUTH_RECEIVE buffer. nvmet_execute_auth_receive() allocates the host-specified length, then nvmet_auth_success1() or nvmet_auth_failure1() formats a larger fixed response despite only warning about the mismatch. An NVMe-oF initiator can overwrite 16 heap bytes before authentication only when the target has in-band DH-HMAC-CHAP configured.

The record

CVE
CVE-2026-72130
Published
Aug 15, 2026
Updated
Aug 15, 2026
Vendor
The Linux Kernel Organization
Product
Linux
Classifications
CWE-787, T1190
Attack vector
network
Privileges
unauthenticated

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=6.0
  2. Affected versionversion=db1312dd95488b5e6ff362ff66fcf953a46b1821 <2eaa3ad450141cfcf187bb43cb8335eb336b5f87
  3. Affected versionversion=db1312dd95488b5e6ff362ff66fcf953a46b1821 <779575bc35c687697ba69e904f2cd22e60112534
  4. Affected versionversion=db1312dd95488b5e6ff362ff66fcf953a46b1821 <80bf7b7f676e3987bbe06af3c359bd56ac91a5a9
  5. Affected versionversion=db1312dd95488b5e6ff362ff66fcf953a46b1821 <bc111698b46e43eddd8664cceaa621cd559e99a0

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

The Linux Kernel Organization · Linuxversion=6.0; version=db1312dd95488b5e6ff362ff66fcf953a46b1821 <2eaa3ad450141cfcf187bb43cb8335eb336b5f87; version=db1312dd95488b5e6ff362ff66fcf953a46b1821 <779575bc35c687697ba69e904f2cd22e60112534; version=db1312dd95488b5e6ff362ff66fcf953a46b1821 <80bf7b7f676e3987bbe06af3c359bd56ac91a5a9; version=db1312dd95488b5e6ff362ff66fcf953a46b1821 <bc111698b46e43eddd8664cceaa621cd559e99a0

Published CVSS scores

8.8Red HatCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
9.8LinuxCVSS:3.1/AV:N/AC:L/PR:N/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.

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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)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-787Out-of-bounds Write
T1190Exploit Public-Facing Application

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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