GHSA-4H9C-XJ6X-WV3F
Vulnerability from github – Published: 2026-09-04 18:31 – Updated: 2026-09-04 18:31
VLAI
Details
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.
{
"affected": [],
"aliases": [
"CVE-2026-80797"
],
"database_specific": {
"cwe_ids": [],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2026-09-04T16:18:06Z",
"severity": null
},
"details": "In the Linux kernel, the following vulnerability has been resolved:\n\nnfc: pn533: purge fragmented skbs during cleanup\n\npn53x_common_clean() purges resp_q before freeing the common PN533 state,\nbut it leaves fragment_skb untouched. The fragmentation helpers queue\ntransmit fragments there while sending large initiator or target-mode\nframes, and those skbs remain owned by the driver until they are sent or\ndiscarded.\n\nIf the device is removed while fragments are still queued, the common\ncleanup path frees the PN533 state without releasing the queued fragment\nskbs, leaking them.\n\nPurge fragment_skb during cleanup alongside resp_q.",
"id": "GHSA-4h9c-xj6x-wv3f",
"modified": "2026-09-04T18:31:26Z",
"published": "2026-09-04T18:31:26Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2026-80797"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/130b5ad4492f8e53d0398ee3af2b0e2388504d11"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/2f5d093194ec24d7c29b91bf7df014924e0f4ea1"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/4a52ec2457ff8c26206fcc20fa1972cc35a678c4"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/5718fc62198c38c2de5316020a90506f9e75e0bb"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/9319c3c4962efc8697246b563ea31c6d47f085aa"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/d63e85c5d5555fe6aa65155d3a09452597e163c3"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/e169277281373818ae1cedf976aa1e99118fb77d"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/e7ed2ea5590fbe2d3be39ee4fb0c758a12e31d0c"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/e95beff58b38c871c557bf84e528408283c2c0ad"
}
],
"schema_version": "1.4.0",
"severity": []
}
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Experimental. This forecast is provided for visualization only and may change without notice. Do not use it for operational decisions.
Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.
Sightings
| Author | Source | Type | Date | Other |
|---|
Nomenclature
- Seen: The vulnerability was mentioned, discussed, or observed by the user.
- Confirmed: The vulnerability has been validated from an analyst's perspective.
- Published Proof of Concept: A public proof of concept is available for this vulnerability.
- Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
- Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
- Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
- Not confirmed: The user expressed doubt about the validity of the vulnerability.
- Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.
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The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the
vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base
model, served locally by ML-Gateway.
They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.
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Related by attack behaviour
Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.
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