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NVD / CVE Program· CNA Linux

CVE-2026-80801: nfc: microread: validate target discovery payload lengths

Noroxi assessment

Priority: Monitor (action score 0/100)

  • The sources we track (CISA KEV, Exploit-DB, Metasploit, Nuclei, GitHub) show no public exploit code or exploitation in the wild.
  • Probability of exploitation in the next 30 days: 0.24% (FIRST EPSS).
  • Fixed version: Linux Linux 18f02354ed229b8e4561b580812d026e7eb29c85, 25519469972ef57c3edb1805dabd6c5612b90211, 92a6f0201bb68391b5eba1b3f330af007d7323b6.

Low priority for now. Upgrade to Linux Linux 18f02354ed229b8e4561b580812d026e7eb29c85, 25519469972ef57c3edb1805dabd6c5612b90211, 92a6f0201bb68391b5eba1b3f330af007d7323b6 or later.

Generated automatically from the record's data: CVSS (NVD and CNA), CISA KEV and SSVC, FIRST EPSS, exploit sources, fixed versions. How we calculate it

Primary sources: NVD · CVE.org · FIRST EPSS

In the Linux kernel, the following vulnerability has been resolved: nfc: microread: validate target discovery payload lengths microread_target_discovered() parses target discovery payloads from skb->data according to the HCI gate. The fixed field offsets and UID copies were checked only against the destination nfc_target buffers, not against the actual skb length. Validate that each gate-specific payload contains the fixed fields and UID bytes before reading or copying them.

—No exploit Fix available
Published
Sep 4, 2026
Updated
Oct 19, 2026
EPSS
0.2% · 15th percentile
CWE
—

Report tools

JSON

Action score

0

Monitor

Low priority for now.

CVSS
0 / 40 · —
CISA KEV
0 / 30 · Not listed
EPSS
0 / 30 · 0.2%

Get told when this record changes

  • Not in KEV: no record of exploitation in the wild
  • No public exploit code on record
  • A fix has been released

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When you'll hear from us

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  • when exploit code appears or is weaponized
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Noroxi analysis

What does it mean in your environment?

The assessment above is generated automatically from the record's data; it doesn't know your environment. Our team verifies on your systems whether this vulnerability is actually exploitable and which mitigation is enough.

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Affected systems

Is your version affected?

Pick the product and type the version you run. It's compared with this record's version ranges in your browser; the version isn't sent anywhere.

—

Versions reported by the vendor

Affected version ranges reported by the assigning authority (Linux). Independent of NVD's CPE analysis and usually ahead of it.

  • Linux Linux

    • 3.9affected
    • cfad1ba87150e198be9ea32367a24e500e59de2c and later · before c6de4241f2efbbab286efbb84a9c7190298b3052affected · git
    • cfad1ba87150e198be9ea32367a24e500e59de2c and later · before 92a6f0201bb68391b5eba1b3f330af007d7323b6affected · git
    • cfad1ba87150e198be9ea32367a24e500e59de2c and later · before cb298672282421159e53ab311fe49d204c8a52daaffected · git
    • cfad1ba87150e198be9ea32367a24e500e59de2c and later · before 18f02354ed229b8e4561b580812d026e7eb29c85affected · git
    • cfad1ba87150e198be9ea32367a24e500e59de2c and later · before e6397fe7b8b5ef18e051f49612d40ff476c5f7d9affected · git
    • cfad1ba87150e198be9ea32367a24e500e59de2c and later · before d0902a7c454326c6384c614226ab8987f3fd425daffected · git
    • cfad1ba87150e198be9ea32367a24e500e59de2c and later · before dabfa26a208e56f4d8dbf26fddc48f188bdb0649affected · git
    • cfad1ba87150e198be9ea32367a24e500e59de2c and later · before 953963b9ac5eecbb316617d337bfaa3d731e3c5eaffected · git
    • cfad1ba87150e198be9ea32367a24e500e59de2c and later · before 25519469972ef57c3edb1805dabd6c5612b90211affected · git

Package-level exposure

OSV and GitHub Advisory data: ecosystem, package and range. SBOM matching uses this table.

EcosystemPackageAffected rangeFix
Debian:12linuxbefore 6.1.187-16.1.187-1
Debian:12linux-6.12before 6.12.107-1~deb12u16.12.107-1~deb12u1
Debian:13linuxbefore 6.12.107-16.12.107-1
Debian:14linuxbefore 7.1.12-17.1.12-1

Same product

linux: all records

Other highest-scoring records for the same primary product.

  • CVE-2026-74705udp: fix potential use-after-free in tunnel segmentation
    40Plan
  • CVE-2026-74612veth: fix skb length accounting after XDP frag adjustment
    40Plan
  • CVE-2026-74475vxlan: use neigh_ha_snapshot() in route_shortcircuit()
    40Plan

Published before and after this one in the same product

  • ← EarlierCVE-2026-80799Sep 4, 2026 · nfc: llcp: fix OOB read and u8 offset wrap in TLV parsers
    0Monitor
  • ← EarlierCVE-2026-80800Sep 4, 2026 · nfc: llcp: bound the connect_sn TLV walk to the skb
    0Monitor
  • Later →CVE-2026-80802Sep 4, 2026 · nfc: fdp: bound the device-reported read length and fix an skb leak
    0Monitor

Remediation

Which version to upgrade to

Fix versions compiled from the vendor, package registries and Microsoft. Verify the vendor's note before upgrading.

Product / packageFixed versionSource
Linux Linux18f02354ed229b8e4561b580812d026e7eb29c85Vendor (CNA)
Linux Linux25519469972ef57c3edb1805dabd6c5612b90211Vendor (CNA)
Linux Linux92a6f0201bb68391b5eba1b3f330af007d7323b6Vendor (CNA)
Linux Linux953963b9ac5eecbb316617d337bfaa3d731e3c5eVendor (CNA)
Linux Linuxc6de4241f2efbbab286efbb84a9c7190298b3052Vendor (CNA)
Linux Linuxcb298672282421159e53ab311fe49d204c8a52daVendor (CNA)
Linux Linuxd0902a7c454326c6384c614226ab8987f3fd425dVendor (CNA)
Linux Linuxdabfa26a208e56f4d8dbf26fddc48f188bdb0649Vendor (CNA)
Linux Linuxe6397fe7b8b5ef18e051f49612d40ff476c5f7d9Vendor (CNA)
azl3 kernel 6.6.150.1-1 on Azure Linux 3.0—Microsoft (MSRC)
debian:linux6.1.187-1 · Debian:12Package registry (OSV)
debian:linux-6.126.12.107-1~deb12u1 · Debian:12Package registry (OSV)

Exploit status

No known public exploit

No public exploit has been observed yet. That doesn't mean you're safe, only that the bar is a little higher.

Research context

For pentesters and researchers: attack profile, score disagreement, timeline, patch commits, credits, variant and chain candidates, bug bounty scope. All derived from existing data; no exploit code.

Timeline

From publication to today: proof of concept, Metasploit module, CISA KEV and fix record. Dates are as reported by the sources.

No dated events beyond publication.

EPSS, last 120 days

FIRST EPSS daily score; only changes of 0.01 or more are recorded (step chart).

Patch and commit links

Commit, PR and diff links among the references. A starting point for patch-diffing and variant hunting; fixes, not exploits.

No commit or PR link among the references.

Credits

All researchers

Finders, reporters and analysts named in the CNA record. Click a name for that researcher’s other records.

No credits in the CNA record.

Variant candidates

Same product, same weakness class, within 18 months. If the patch missed the root cause, the sibling bug is here.

No nightly-computed relations.

Chain candidates

An authentication bypass and a privilege-requiring bug in the same product, published close together: combined they may become an unauthenticated path.

—

Bug bounty scope

No known public program.

Source: bounty-targets-data (public HackerOne, Bugcrowd, Intigriti, YesWeHack listings).

Technical details

No CVSS vector for this record, so attack conditions can't be derived.

Weakness class (CWE)

—

Attack context

MITRE CAPEC attack patterns and ATT&CK techniques for this weakness class (CWE). A starting point for detection rules and threat hunting.

MITRE has no CAPEC/ATT&CK mapping for this CWE.

Change log

  1. Fix✗ → ✓

For records you follow, these changes also arrive as notifications. →

References

Show all references (8 more)

Vendor advisories and official records. Exploit/PoC links are deliberately left out.

All records