CVE-2026-80797Hinoki check available

Memory leak via uncleared PN533 transmit fragments

Published Sep 4, 2026 · Updated Sep 4, 2026

Memory leak in the Linux kernel PN533 NFC driver from 3.12 allows physically proximate attackers to consume memory during device removal. The pn53x_common_clean() path purges resp_q but frees the common PN533 state without purging fragment_skb, leaving queued transmit skbs allocated. Reachability requires a PN533 device to be removed while fragments of a large initiator- or target-mode frame remain queued; the documented consequence is retained kernel memory.

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

Memory leak in the Linux kernel PN533 NFC driver from 3.12 allows physically proximate attackers to consume memory during device removal. The pn53x_common_clean() path purges resp_q but frees the common PN533 state without purging fragment_skb, leaving queued transmit skbs allocated. Reachability requires a PN533 device to be removed while fragments of a large initiator- or target-mode frame remain queued; the documented consequence is retained kernel memory.

The record

CVE
CVE-2026-80797
Published
Sep 4, 2026
Updated
Sep 4, 2026
Vendor
The Linux Kernel Organization
Product
Linux
Classifications
Unavailable
Attack vector
physical
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=3.12
  2. Affected versionversion=963a82e07d4e1f95fc423d53912ac0a7fe643b1c <130b5ad4492f8e53d0398ee3af2b0e2388504d11
  3. Affected versionversion=963a82e07d4e1f95fc423d53912ac0a7fe643b1c <2f5d093194ec24d7c29b91bf7df014924e0f4ea1
  4. Affected versionversion=963a82e07d4e1f95fc423d53912ac0a7fe643b1c <4a52ec2457ff8c26206fcc20fa1972cc35a678c4
  5. Affected versionversion=963a82e07d4e1f95fc423d53912ac0a7fe643b1c <5718fc62198c38c2de5316020a90506f9e75e0bb
  6. Affected versionversion=963a82e07d4e1f95fc423d53912ac0a7fe643b1c <9319c3c4962efc8697246b563ea31c6d47f085aa
  7. Affected versionversion=963a82e07d4e1f95fc423d53912ac0a7fe643b1c <d63e85c5d5555fe6aa65155d3a09452597e163c3
  8. Affected versionversion=963a82e07d4e1f95fc423d53912ac0a7fe643b1c <e169277281373818ae1cedf976aa1e99118fb77d
  9. Affected versionversion=963a82e07d4e1f95fc423d53912ac0a7fe643b1c <e7ed2ea5590fbe2d3be39ee4fb0c758a12e31d0c
  10. Affected versionversion=963a82e07d4e1f95fc423d53912ac0a7fe643b1c <e95beff58b38c871c557bf84e528408283c2c0ad

What conditions does exploitation require?

Attack vectorphysical
Required privilegesUnavailable in this record.

What is affected?

The Linux Kernel Organization · Linuxversion=3.12; version=963a82e07d4e1f95fc423d53912ac0a7fe643b1c <130b5ad4492f8e53d0398ee3af2b0e2388504d11; version=963a82e07d4e1f95fc423d53912ac0a7fe643b1c <2f5d093194ec24d7c29b91bf7df014924e0f4ea1; version=963a82e07d4e1f95fc423d53912ac0a7fe643b1c <4a52ec2457ff8c26206fcc20fa1972cc35a678c4; version=963a82e07d4e1f95fc423d53912ac0a7fe643b1c <5718fc62198c38c2de5316020a90506f9e75e0bb; version=963a82e07d4e1f95fc423d53912ac0a7fe643b1c <9319c3c4962efc8697246b563ea31c6d47f085aa; version=963a82e07d4e1f95fc423d53912ac0a7fe643b1c <d63e85c5d5555fe6aa65155d3a09452597e163c3; version=963a82e07d4e1f95fc423d53912ac0a7fe643b1c <e169277281373818ae1cedf976aa1e99118fb77d; version=963a82e07d4e1f95fc423d53912ac0a7fe643b1c <e7ed2ea5590fbe2d3be39ee4fb0c758a12e31d0c; version=963a82e07d4e1f95fc423d53912ac0a7fe643b1c <e95beff58b38c871c557bf84e528408283c2c0ad

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)
Vectorphysical
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.

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Technologies

Your stack

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Your stack

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