CVE-2026-80795Hinoki check available

Kernel memory corruption via unchecked NFC target append

Published Sep 4, 2026 · Updated Sep 4, 2026

Out-of-bounds write in the Linux kernel NCI NFC subsystem allows attackers controlling an NFCC to corrupt kernel slab memory. nci_target_auto_activated() appends to the fixed-size ndev->targets array and increments n_targets without checking NCI_MAX_DISCOVERED_TARGETS. Repeated discovery responses followed by auto-activation notifications must retain and inflate the target count; the published result is an out-of-bounds write and subsequent array walk, with no further impact documented.

CVSS severityUnavailable
Unscored
EPSS probability0.19%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkAvailable
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Summary

What happened

Out-of-bounds write in the Linux kernel NCI NFC subsystem allows attackers controlling an NFCC to corrupt kernel slab memory. nci_target_auto_activated() appends to the fixed-size ndev->targets array and increments n_targets without checking NCI_MAX_DISCOVERED_TARGETS. Repeated discovery responses followed by auto-activation notifications must retain and inflate the target count; the published result is an out-of-bounds write and subsequent array walk, with no further impact documented.

The record

CVE
CVE-2026-80795
Published
Sep 4, 2026
Updated
Sep 4, 2026
Vendor
The Linux Kernel Organization
Product
Linux
Classifications
Unavailable
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?

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  1. Affected versionversion=019c4fbaa790e2b3f11dab0c8b7d9896d77db3e5 <0dc59de0075f88404a0f4a2b5233104ef459fbb2
  2. Affected versionversion=019c4fbaa790e2b3f11dab0c8b7d9896d77db3e5 <129032c0616d83a5e3e304f6ebf88f14ba01e5f7
  3. Affected versionversion=019c4fbaa790e2b3f11dab0c8b7d9896d77db3e5 <24761d3a5f692df5f7d848caeabcb2afd10917aa
  4. Affected versionversion=019c4fbaa790e2b3f11dab0c8b7d9896d77db3e5 <2f08dbce3b37624ec6b424d759336a99586170ec
  5. Affected versionversion=019c4fbaa790e2b3f11dab0c8b7d9896d77db3e5 <50e87e1c0e18d791dcd7dccf30f9a2f3e2cf3951
  6. Affected versionversion=019c4fbaa790e2b3f11dab0c8b7d9896d77db3e5 <94530ffabfca57e9bff1d207106010014cc84032
  7. Affected versionversion=019c4fbaa790e2b3f11dab0c8b7d9896d77db3e5 <ac200079db50af81e6b04d058b33ec92901d8edd
  8. Affected versionversion=019c4fbaa790e2b3f11dab0c8b7d9896d77db3e5 <afd8605fb43becb892311102844955c3b127fc7e
  9. Affected versionversion=019c4fbaa790e2b3f11dab0c8b7d9896d77db3e5 <d7083f41c21b30582e91b2e6de4d54dce74f6f9c
  10. Affected versionversion=3.4

What conditions does exploitation require?

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

What is affected?

The Linux Kernel Organization · Linuxversion=019c4fbaa790e2b3f11dab0c8b7d9896d77db3e5 <0dc59de0075f88404a0f4a2b5233104ef459fbb2; version=019c4fbaa790e2b3f11dab0c8b7d9896d77db3e5 <129032c0616d83a5e3e304f6ebf88f14ba01e5f7; version=019c4fbaa790e2b3f11dab0c8b7d9896d77db3e5 <24761d3a5f692df5f7d848caeabcb2afd10917aa; version=019c4fbaa790e2b3f11dab0c8b7d9896d77db3e5 <2f08dbce3b37624ec6b424d759336a99586170ec; version=019c4fbaa790e2b3f11dab0c8b7d9896d77db3e5 <50e87e1c0e18d791dcd7dccf30f9a2f3e2cf3951; version=019c4fbaa790e2b3f11dab0c8b7d9896d77db3e5 <94530ffabfca57e9bff1d207106010014cc84032; version=019c4fbaa790e2b3f11dab0c8b7d9896d77db3e5 <ac200079db50af81e6b04d058b33ec92901d8edd; version=019c4fbaa790e2b3f11dab0c8b7d9896d77db3e5 <afd8605fb43becb892311102844955c3b127fc7e; version=019c4fbaa790e2b3f11dab0c8b7d9896d77db3e5 <d7083f41c21b30582e91b2e6de4d54dce74f6f9c; version=3.4

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

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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)
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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