FKIE_CVE-2026-64547
Vulnerability from fkie_nvd - Published: 2026-07-27 21:17 - Updated: 2026-08-17 05:17
Severity
Summary
In the Linux kernel, the following vulnerability has been resolved:
net: usb: net1080: validate packet_len before pad-byte access in rx_fixup
For an even packet_len, net1080_rx_fixup() reads the pad byte at
skb->data[packet_len] before the skb->len != packet_len check further
down, and packet_len is only bounded against NC_MAX_PACKET. A malicious
NetChip 1080 device can send a short frame advertising a large even
packet_len (e.g. 0x4000), so the pad-byte read lands past the end of the
skb:
BUG: KASAN: slab-out-of-bounds in net1080_rx_fixup
Read of size 1 at addr ffff8880106c83c6 by task ksoftirqd/0/14
...
net1080_rx_fixup (drivers/net/usb/net1080.c:384)
usbnet_bh (drivers/net/usb/usbnet.c:1589)
process_one_work (kernel/workqueue.c:3322)
bh_worker (kernel/workqueue.c:3708)
tasklet_action (kernel/softirq.c:965)
handle_softirqs (kernel/softirq.c:622)
...
Reject the frame when packet_len >= skb->len before reading.
References
Impacted products
| Vendor | Product | Version |
|---|
{
"affected": [
{
"affectedData": [
{
"defaultStatus": "unaffected",
"product": "Linux",
"programFiles": [
"drivers/net/usb/net1080.c"
],
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"versions": [
{
"lessThan": "f42217fa7d535e9ec4151f7971f06f6ea65e850a",
"status": "affected",
"version": "904813cd8a0b334189da285bb05af0b18b062502",
"versionType": "git"
},
{
"lessThan": "c087749815379e9af2fdbeb08bfc33870b103958",
"status": "affected",
"version": "904813cd8a0b334189da285bb05af0b18b062502",
"versionType": "git"
},
{
"lessThan": "e4a87126c085b097d29e17e3b7647295bba8be7c",
"status": "affected",
"version": "904813cd8a0b334189da285bb05af0b18b062502",
"versionType": "git"
},
{
"lessThan": "685e92934f11d5e215dad58813e2f9955ac2f436",
"status": "affected",
"version": "904813cd8a0b334189da285bb05af0b18b062502",
"versionType": "git"
},
{
"lessThan": "4dc8484be3302d187274364820d3bef6c62bde32",
"status": "affected",
"version": "904813cd8a0b334189da285bb05af0b18b062502",
"versionType": "git"
},
{
"lessThan": "b153cfe84b1340c69a13d0957665a2bfcf21239c",
"status": "affected",
"version": "904813cd8a0b334189da285bb05af0b18b062502",
"versionType": "git"
},
{
"lessThan": "ea866cab12db1a2100b400a8b03569e5bc0ee29a",
"status": "affected",
"version": "904813cd8a0b334189da285bb05af0b18b062502",
"versionType": "git"
},
{
"lessThan": "03f384bc0cb8d4a1301d4f5b0baef2d980258383",
"status": "affected",
"version": "904813cd8a0b334189da285bb05af0b18b062502",
"versionType": "git"
}
]
},
{
"defaultStatus": "affected",
"product": "Linux",
"programFiles": [
"drivers/net/usb/net1080.c"
],
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"versions": [
{
"status": "affected",
"version": "2.6.14"
},
{
"lessThan": "2.6.14",
"status": "unaffected",
"version": "0",
"versionType": "semver"
},
{
"lessThanOrEqual": "5.10.*",
"status": "unaffected",
"version": "5.10.261",
"versionType": "semver"
},
{
"lessThanOrEqual": "5.15.*",
"status": "unaffected",
"version": "5.15.212",
"versionType": "semver"
},
{
"lessThanOrEqual": "6.1.*",
"status": "unaffected",
"version": "6.1.178",
"versionType": "semver"
},
{
"lessThanOrEqual": "6.6.*",
"status": "unaffected",
"version": "6.6.145",
"versionType": "semver"
},
{
"lessThanOrEqual": "6.12.*",
"status": "unaffected",
"version": "6.12.97",
"versionType": "semver"
},
{
"lessThanOrEqual": "6.18.*",
"status": "unaffected",
"version": "6.18.40",
"versionType": "semver"
},
{
"lessThanOrEqual": "7.1.*",
"status": "unaffected",
"version": "7.1.5",
"versionType": "semver"
},
{
"lessThanOrEqual": "*",
"status": "unaffected",
"version": "7.2",
"versionType": "original_commit_for_fix"
}
]
}
],
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
}
],
"cveTags": [],
"descriptions": [
{
"lang": "en",
"value": "In the Linux kernel, the following vulnerability has been resolved:\n\nnet: usb: net1080: validate packet_len before pad-byte access in rx_fixup\n\nFor an even packet_len, net1080_rx_fixup() reads the pad byte at\nskb-\u003edata[packet_len] before the skb-\u003elen != packet_len check further\ndown, and packet_len is only bounded against NC_MAX_PACKET. A malicious\nNetChip 1080 device can send a short frame advertising a large even\npacket_len (e.g. 0x4000), so the pad-byte read lands past the end of the\nskb:\n\n BUG: KASAN: slab-out-of-bounds in net1080_rx_fixup\n Read of size 1 at addr ffff8880106c83c6 by task ksoftirqd/0/14\n ...\n net1080_rx_fixup (drivers/net/usb/net1080.c:384)\n usbnet_bh (drivers/net/usb/usbnet.c:1589)\n process_one_work (kernel/workqueue.c:3322)\n bh_worker (kernel/workqueue.c:3708)\n tasklet_action (kernel/softirq.c:965)\n handle_softirqs (kernel/softirq.c:622)\n ...\n\nReject the frame when packet_len \u003e= skb-\u003elen before reading."
}
],
"id": "CVE-2026-64547",
"lastModified": "2026-08-17T05:17:59.960",
"metrics": {
"cvssMetricV31": [
{
"cvssData": {
"attackComplexity": "LOW",
"attackVector": "ADJACENT_NETWORK",
"availabilityImpact": "HIGH",
"baseScore": 8.1,
"baseSeverity": "HIGH",
"confidentialityImpact": "HIGH",
"integrityImpact": "NONE",
"privilegesRequired": "NONE",
"scope": "UNCHANGED",
"userInteraction": "NONE",
"vectorString": "CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H",
"version": "3.1"
},
"exploitabilityScore": 2.8,
"impactScore": 5.2,
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"type": "Secondary"
}
]
},
"published": "2026-07-27T21:17:07.427",
"references": [
{
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"url": "https://git.kernel.org/stable/c/03f384bc0cb8d4a1301d4f5b0baef2d980258383"
},
{
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"url": "https://git.kernel.org/stable/c/4dc8484be3302d187274364820d3bef6c62bde32"
},
{
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"url": "https://git.kernel.org/stable/c/685e92934f11d5e215dad58813e2f9955ac2f436"
},
{
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"url": "https://git.kernel.org/stable/c/b153cfe84b1340c69a13d0957665a2bfcf21239c"
},
{
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"url": "https://git.kernel.org/stable/c/c087749815379e9af2fdbeb08bfc33870b103958"
},
{
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"url": "https://git.kernel.org/stable/c/e4a87126c085b097d29e17e3b7647295bba8be7c"
},
{
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"url": "https://git.kernel.org/stable/c/ea866cab12db1a2100b400a8b03569e5bc0ee29a"
},
{
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"url": "https://git.kernel.org/stable/c/f42217fa7d535e9ec4151f7971f06f6ea65e850a"
}
],
"sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"vulnStatus": "Received"
}
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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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