CVE-2026-80796Hinoki check available

Kernel slab over-read via unchecked activation length

Published Sep 4, 2026 · Updated Sep 4, 2026

Out-of-bounds read in Linux kernel NFC NCI parsing allows attackers to trigger a slab over-read via a crafted NCI notification. The activation extractors trust an inner length byte and pass it to memcpy() without checking the caller-validated activation-parameter length. The attacker must be able to supply a crafted NCI RF_INTF_ACTIVATED_NTF payload; no write, code execution, or crash impact is reported.

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 read in Linux kernel NFC NCI parsing allows attackers to trigger a slab over-read via a crafted NCI notification. The activation extractors trust an inner length byte and pass it to memcpy() without checking the caller-validated activation-parameter length. The attacker must be able to supply a crafted NCI RF_INTF_ACTIVATED_NTF payload; no write, code execution, or crash impact is reported.

The record

CVE
CVE-2026-80796
Published
Sep 4, 2026
Updated
Sep 4, 2026
Vendor
The Linux Kernel Organization
Product
Linux
Classifications
CWE-125
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=3.3
  2. Affected versionversion=e8c0dacd9836dc2dcb28d236c9cc3cfaa9965a20 <0428fa2c22e2ba0cff766d3b80d461e149102045
  3. Affected versionversion=e8c0dacd9836dc2dcb28d236c9cc3cfaa9965a20 <04e51353cb9fa321caaeeed8331d4cd041fbaca7
  4. Affected versionversion=e8c0dacd9836dc2dcb28d236c9cc3cfaa9965a20 <1168484fe2b3828bf24a46f3c42a8719fade679b
  5. Affected versionversion=e8c0dacd9836dc2dcb28d236c9cc3cfaa9965a20 <9620a91f8d643b680f417a435db399a04d1e06d8
  6. Affected versionversion=e8c0dacd9836dc2dcb28d236c9cc3cfaa9965a20 <9b01f5af0dc59263b59391b148bc78d83c0354a9
  7. Affected versionversion=e8c0dacd9836dc2dcb28d236c9cc3cfaa9965a20 <be311c0cfeadfbe815ea22d2914a98d06e3fab0e
  8. Affected versionversion=e8c0dacd9836dc2dcb28d236c9cc3cfaa9965a20 <cf9d44be50b9074a5abdc301b4a3ba3e283591df
  9. Affected versionversion=e8c0dacd9836dc2dcb28d236c9cc3cfaa9965a20 <e25b44bd8b8cc666b49a3fe0ef547e64d5b1e300
  10. Affected versionversion=e8c0dacd9836dc2dcb28d236c9cc3cfaa9965a20 <f5c534b53f8c424a8e7633c9b585475c4bf4ee18

What conditions does exploitation require?

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

What is affected?

The Linux Kernel Organization · Linuxversion=3.3; version=e8c0dacd9836dc2dcb28d236c9cc3cfaa9965a20 <0428fa2c22e2ba0cff766d3b80d461e149102045; version=e8c0dacd9836dc2dcb28d236c9cc3cfaa9965a20 <04e51353cb9fa321caaeeed8331d4cd041fbaca7; version=e8c0dacd9836dc2dcb28d236c9cc3cfaa9965a20 <1168484fe2b3828bf24a46f3c42a8719fade679b; version=e8c0dacd9836dc2dcb28d236c9cc3cfaa9965a20 <9620a91f8d643b680f417a435db399a04d1e06d8; version=e8c0dacd9836dc2dcb28d236c9cc3cfaa9965a20 <9b01f5af0dc59263b59391b148bc78d83c0354a9; version=e8c0dacd9836dc2dcb28d236c9cc3cfaa9965a20 <be311c0cfeadfbe815ea22d2914a98d06e3fab0e; version=e8c0dacd9836dc2dcb28d236c9cc3cfaa9965a20 <cf9d44be50b9074a5abdc301b4a3ba3e283591df; version=e8c0dacd9836dc2dcb28d236c9cc3cfaa9965a20 <e25b44bd8b8cc666b49a3fe0ef547e64d5b1e300; version=e8c0dacd9836dc2dcb28d236c9cc3cfaa9965a20 <f5c534b53f8c424a8e7633c9b585475c4bf4ee18

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.

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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

CWE-125Out-of-bounds Read

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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