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NVD / CVE Program· CNA Linux

CVE-2026-80803: nfc: digital: clamp SENSF_RES length to the destination buffer

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 31aa28ed732f66ab83c40ef53d99791be69b85c4, 344a56d7c8e0f3cbaff0bcb1bcd95a1a1db24b16, 4e942da2869bcd646353eef706b7dd82efeb9db5.

Low priority for now. Upgrade to Linux Linux 31aa28ed732f66ab83c40ef53d99791be69b85c4, 344a56d7c8e0f3cbaff0bcb1bcd95a1a1db24b16, 4e942da2869bcd646353eef706b7dd82efeb9db5 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: digital: clamp SENSF_RES length to the destination buffer digital_in_recv_sensf_res() memcpy()s resp->len bytes from a remote NFC-F device response into the NFC_SENSF_RES_MAXSIZE-byte target.sensf_res field without an upper-bound check. A nearby malicious NFC-F device can send an oversized SENSF_RES response to overflow the stack-local struct nfc_target. Clamp resp->len to NFC_SENSF_RES_MAXSIZE before the copy. Found by 0sec automated security-research tooling (https://0sec.ai).

—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%

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  • No public exploit code on record
  • A fix has been released

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  • when EPSS rises 20 points in a week

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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

    • 3.13affected
    • 8c0695e4998dd268ff2a05951961247b7e015651 and later · before 6afb29751ee731e7f7a96feb8a15f91441e552baaffected · git
    • 8c0695e4998dd268ff2a05951961247b7e015651 and later · before e886c63d2ca7108826076989103a1ffa8a0bb8f4affected · git
    • 8c0695e4998dd268ff2a05951961247b7e015651 and later · before 4e942da2869bcd646353eef706b7dd82efeb9db5affected · git
    • 8c0695e4998dd268ff2a05951961247b7e015651 and later · before d0756a98277e383c26fead988a96c91f0781cd7faffected · git
    • 8c0695e4998dd268ff2a05951961247b7e015651 and later · before af4c0606f743e009254a8d252096855335ade85daffected · git
    • 8c0695e4998dd268ff2a05951961247b7e015651 and later · before a56773e649ea99b344d6bbaf90f34c8e3fadef5daffected · git
    • 8c0695e4998dd268ff2a05951961247b7e015651 and later · before a1ef9bddfbb3ae42b036c5aa16cf386d78db70b6affected · git
    • 8c0695e4998dd268ff2a05951961247b7e015651 and later · before 31aa28ed732f66ab83c40ef53d99791be69b85c4affected · git
    • 8c0695e4998dd268ff2a05951961247b7e015651 and later · before 344a56d7c8e0f3cbaff0bcb1bcd95a1a1db24b16affected · 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-2026-80801Sep 4, 2026 · nfc: microread: validate target discovery payload lengths
    0Monitor
  • ← EarlierCVE-2026-80802Sep 4, 2026 · nfc: fdp: bound the device-reported read length and fix an skb leak
    0Monitor
  • Later →CVE-2026-80804Sep 4, 2026 · xfs: restore nofs context unconditionally in xfs_trans_roll
    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 Linux31aa28ed732f66ab83c40ef53d99791be69b85c4Vendor (CNA)
Linux Linux344a56d7c8e0f3cbaff0bcb1bcd95a1a1db24b16Vendor (CNA)
Linux Linux4e942da2869bcd646353eef706b7dd82efeb9db5Vendor (CNA)
Linux Linux6afb29751ee731e7f7a96feb8a15f91441e552baVendor (CNA)
Linux Linuxa1ef9bddfbb3ae42b036c5aa16cf386d78db70b6Vendor (CNA)
Linux Linuxa56773e649ea99b344d6bbaf90f34c8e3fadef5dVendor (CNA)
Linux Linuxaf4c0606f743e009254a8d252096855335ade85dVendor (CNA)
Linux Linuxd0756a98277e383c26fead988a96c91f0781cd7fVendor (CNA)
Linux Linuxe886c63d2ca7108826076989103a1ffa8a0bb8f4Vendor (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✗ → ✓

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References

Show all references (8 more)

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

All records