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NVD / CVE Program· CNA Linux

CVE-2026-80797: nfc: pn533: purge fragmented skbs during cleanup

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 130b5ad4492f8e53d0398ee3af2b0e2388504d11, 2f5d093194ec24d7c29b91bf7df014924e0f4ea1, 4a52ec2457ff8c26206fcc20fa1972cc35a678c4.

Low priority for now. Upgrade to Linux Linux 130b5ad4492f8e53d0398ee3af2b0e2388504d11, 2f5d093194ec24d7c29b91bf7df014924e0f4ea1, 4a52ec2457ff8c26206fcc20fa1972cc35a678c4 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: pn533: purge fragmented skbs during cleanup pn53x_common_clean() purges resp_q before freeing the common PN533 state, but it leaves fragment_skb untouched. The fragmentation helpers queue transmit fragments there while sending large initiator or target-mode frames, and those skbs remain owned by the driver until they are sent or discarded. If the device is removed while fragments are still queued, the common cleanup path frees the PN533 state without releasing the queued fragment skbs, leaking them. Purge fragment_skb during cleanup alongside resp_q.

—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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Noroxi analysis

What does it mean in your environment?

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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

    • 3.12affected
    • 963a82e07d4e1f95fc423d53912ac0a7fe643b1c and later · before 130b5ad4492f8e53d0398ee3af2b0e2388504d11affected · git
    • 963a82e07d4e1f95fc423d53912ac0a7fe643b1c and later · before 9319c3c4962efc8697246b563ea31c6d47f085aaaffected · git
    • 963a82e07d4e1f95fc423d53912ac0a7fe643b1c and later · before d63e85c5d5555fe6aa65155d3a09452597e163c3affected · git
    • 963a82e07d4e1f95fc423d53912ac0a7fe643b1c and later · before 4a52ec2457ff8c26206fcc20fa1972cc35a678c4affected · git
    • 963a82e07d4e1f95fc423d53912ac0a7fe643b1c and later · before e169277281373818ae1cedf976aa1e99118fb77daffected · git
    • 963a82e07d4e1f95fc423d53912ac0a7fe643b1c and later · before 2f5d093194ec24d7c29b91bf7df014924e0f4ea1affected · git
    • 963a82e07d4e1f95fc423d53912ac0a7fe643b1c and later · before e7ed2ea5590fbe2d3be39ee4fb0c758a12e31d0caffected · git
    • 963a82e07d4e1f95fc423d53912ac0a7fe643b1c and later · before e95beff58b38c871c557bf84e528408283c2c0adaffected · git
    • 963a82e07d4e1f95fc423d53912ac0a7fe643b1c and later · before 5718fc62198c38c2de5316020a90506f9e75e0bbaffected · 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-2026-80795Sep 4, 2026 · nfc: nci: fix out-of-bounds write in nci_target_auto_activated()
    0Monitor
  • ← EarlierCVE-2026-80796Sep 4, 2026 · nfc: nci: add data_len bound checks to activation parameter extractors
    0Monitor
  • Later →CVE-2026-80798Sep 4, 2026 · nfc: llcp: reject PDUs shorter than the LLCP header
    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 Linux130b5ad4492f8e53d0398ee3af2b0e2388504d11Vendor (CNA)
Linux Linux2f5d093194ec24d7c29b91bf7df014924e0f4ea1Vendor (CNA)
Linux Linux4a52ec2457ff8c26206fcc20fa1972cc35a678c4Vendor (CNA)
Linux Linux5718fc62198c38c2de5316020a90506f9e75e0bbVendor (CNA)
Linux Linux9319c3c4962efc8697246b563ea31c6d47f085aaVendor (CNA)
Linux Linuxd63e85c5d5555fe6aa65155d3a09452597e163c3Vendor (CNA)
Linux Linuxe169277281373818ae1cedf976aa1e99118fb77dVendor (CNA)
Linux Linuxe7ed2ea5590fbe2d3be39ee4fb0c758a12e31d0cVendor (CNA)
Linux Linuxe95beff58b38c871c557bf84e528408283c2c0adVendor (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