CVE-2026-80813

Kernel crash via malformed namespace-list identification

Published Sep 4, 2026 · Updated Sep 4, 2026

NULL pointer dereference in the Linux kernel NVMe target allows attackers to crash the kernel via a crafted Identify CNS 07h command. With command-set filtering enabled, nvmet_execute_identify_nslist() reads req->ns->csi even though this handler never initializes req->ns, which remains NULL. An enabled namespace with an NSID above the requested value is required; reaching the faulty branch triggers a kernel oops and interrupts the target service.

CVSS severityUnavailable
Unscored
EPSS probability0.17%
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 kernel NVMe target allows attackers to crash the kernel via a crafted Identify CNS 07h command. With command-set filtering enabled, nvmet_execute_identify_nslist() reads req->ns->csi even though this handler never initializes req->ns, which remains NULL. An enabled namespace with an NSID above the requested value is required; reaching the faulty branch triggers a kernel oops and interrupts the target service.

The record

CVE
CVE-2026-80813
Published
Sep 4, 2026
Updated
Sep 4, 2026
Vendor
The Linux Kernel Organization
Product
Linux
Classifications
T1499.004
Attack vector
Unavailable
Privileges
Unavailable

Timeline

How it unfolded

  1. Sep 4, 2026CVE publishedPublication date reported by the CVE source.
  2. Sep 4, 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=6.13
  2. Affected versionversion=61c9967cd63448292a64f9ee9aeb6e2053e3a624 <123d664ac98d6f3464462ad4a530474b91ba9890
  3. Affected versionversion=61c9967cd63448292a64f9ee9aeb6e2053e3a624 <2bc1e33ff6a558c8ceef7c0077f3ef70a15fcba2
  4. Affected versionversion=61c9967cd63448292a64f9ee9aeb6e2053e3a624 <61dc1a37e04d4003a19095f54883358330034a39
  5. Affected versionversion=61c9967cd63448292a64f9ee9aeb6e2053e3a624 <79aba4c9403419d822972d2851f2a96a2c0531cf

What conditions does exploitation require?

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

What is affected?

The Linux Kernel Organization · Linuxversion=6.13; version=61c9967cd63448292a64f9ee9aeb6e2053e3a624 <123d664ac98d6f3464462ad4a530474b91ba9890; version=61c9967cd63448292a64f9ee9aeb6e2053e3a624 <2bc1e33ff6a558c8ceef7c0077f3ef70a15fcba2; version=61c9967cd63448292a64f9ee9aeb6e2053e3a624 <61dc1a37e04d4003a19095f54883358330034a39; version=61c9967cd63448292a64f9ee9aeb6e2053e3a624 <79aba4c9403419d822972d2851f2a96a2c0531cf

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

T1499.004Application 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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