Vulnerability-Lookup

CVE-2026-64547 (GCVE-0-2026-64547)

Vulnerability from cvelistv5 – Published: 2026-07-27 20:10 – Updated: 2026-07-27 20:10

Title

net: usb: net1080: validate packet_len before pad-byte access in rx_fixup

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.

Severity

No CVSS data available.

Assigner

Linux

References

8 references

URL	Tags
https://git.kernel.org/stable/c/f42217fa7d535e9ec…
https://git.kernel.org/stable/c/c087749815379e9af…
https://git.kernel.org/stable/c/e4a87126c085b097d…
https://git.kernel.org/stable/c/685e92934f11d5e21…
https://git.kernel.org/stable/c/4dc8484be3302d187…
https://git.kernel.org/stable/c/b153cfe84b1340c69…
https://git.kernel.org/stable/c/ea866cab12db1a210…
https://git.kernel.org/stable/c/03f384bc0cb8d4a13…

Impacted products

2 products

Vendor	Product	Version
Linux	Linux	Affected: 904813cd8a0b334189da285bb05af0b18b062502 , < f42217fa7d535e9ec4151f7971f06f6ea65e850a (git) Affected: 904813cd8a0b334189da285bb05af0b18b062502 , < c087749815379e9af2fdbeb08bfc33870b103958 (git) Affected: 904813cd8a0b334189da285bb05af0b18b062502 , < e4a87126c085b097d29e17e3b7647295bba8be7c (git) Affected: 904813cd8a0b334189da285bb05af0b18b062502 , < 685e92934f11d5e215dad58813e2f9955ac2f436 (git) Affected: 904813cd8a0b334189da285bb05af0b18b062502 , < 4dc8484be3302d187274364820d3bef6c62bde32 (git) Affected: 904813cd8a0b334189da285bb05af0b18b062502 , < b153cfe84b1340c69a13d0957665a2bfcf21239c (git) Affected: 904813cd8a0b334189da285bb05af0b18b062502 , < ea866cab12db1a2100b400a8b03569e5bc0ee29a (git) Affected: 904813cd8a0b334189da285bb05af0b18b062502 , < 03f384bc0cb8d4a1301d4f5b0baef2d980258383 (git)
Linux	Linux	Affected: 2.6.14 Unaffected: 0 , < 2.6.14 (semver) Unaffected: 5.10.261 , ≤ 5.10.* (semver) Unaffected: 5.15.212 , ≤ 5.15.* (semver) Unaffected: 6.1.178 , ≤ 6.1.* (semver) Unaffected: 6.6.145 , ≤ 6.6.* (semver) Unaffected: 6.12.97 , ≤ 6.12.* (semver) Unaffected: 6.18.40 , ≤ 6.18.* (semver) Unaffected: 7.1.5 , ≤ 7.1.* (semver) Unaffected: 7.2-rc3 , ≤ * (original_commit_for_fix)

Show details on NVD website

JSON

To clipboard

{
  "containers": {
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
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          "programFiles": [
            "drivers/net/usb/net1080.c"
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              "versionType": "semver"
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            {
              "lessThanOrEqual": "5.15.*",
              "status": "unaffected",
              "version": "5.15.212",
              "versionType": "semver"
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              "version": "6.1.178",
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              "version": "7.2-rc3",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "cpeApplicability": [
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          ]
        }
      ],
      "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."
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-07-27T20:10:37.786Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
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          "url": "https://git.kernel.org/stable/c/f42217fa7d535e9ec4151f7971f06f6ea65e850a"
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          "url": "https://git.kernel.org/stable/c/c087749815379e9af2fdbeb08bfc33870b103958"
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        },
        {
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        },
        {
          "url": "https://git.kernel.org/stable/c/03f384bc0cb8d4a1301d4f5b0baef2d980258383"
        }
      ],
      "title": "net: usb: net1080: validate packet_len before pad-byte access in rx_fixup",
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    "assignerShortName": "Linux",
    "cveId": "CVE-2026-64547",
    "datePublished": "2026-07-27T20:10:37.786Z",
    "dateReserved": "2026-07-19T15:36:31.795Z",
    "dateUpdated": "2026-07-27T20:10:37.786Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
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  "vulnerability-lookup:meta": {
    "nvd": "{\"cve\":{\"id\":\"CVE-2026-64547\",\"sourceIdentifier\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"published\":\"2026-07-27T21:17:07.427\",\"lastModified\":\"2026-07-27T21:17:07.427\",\"vulnStatus\":\"Received\",\"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.\"}],\"affected\":[{\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"affectedData\":[{\"vendor\":\"Linux\",\"product\":\"Linux\",\"defaultStatus\":\"unaffected\",\"programFiles\":[\"drivers/net/usb/net1080.c\"],\"repo\":\"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\",\"versions\":[{\"version\":\"904813cd8a0b334189da285bb05af0b18b062502\",\"lessThan\":\"f42217fa7d535e9ec4151f7971f06f6ea65e850a\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"904813cd8a0b334189da285bb05af0b18b062502\",\"lessThan\":\"c087749815379e9af2fdbeb08bfc33870b103958\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"904813cd8a0b334189da285bb05af0b18b062502\",\"lessThan\":\"e4a87126c085b097d29e17e3b7647295bba8be7c\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"904813cd8a0b334189da285bb05af0b18b062502\",\"lessThan\":\"685e92934f11d5e215dad58813e2f9955ac2f436\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"904813cd8a0b334189da285bb05af0b18b062502\",\"lessThan\":\"4dc8484be3302d187274364820d3bef6c62bde32\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"904813cd8a0b334189da285bb05af0b18b062502\",\"lessThan\":\"b153cfe84b1340c69a13d0957665a2bfcf21239c\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"904813cd8a0b334189da285bb05af0b18b062502\",\"lessThan\":\"ea866cab12db1a2100b400a8b03569e5bc0ee29a\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"904813cd8a0b334189da285bb05af0b18b062502\",\"lessThan\":\"03f384bc0cb8d4a1301d4f5b0baef2d980258383\",\"versionType\":\"git\",\"status\":\"affected\"}]},{\"vendor\":\"Linux\",\"product\":\"Linux\",\"defaultStatus\":\"affected\",\"programFiles\":[\"drivers/net/usb/net1080.c\"],\"repo\":\"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\",\"versions\":[{\"version\":\"2.6.14\",\"status\":\"affected\"},{\"version\":\"0\",\"lessThan\":\"2.6.14\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"5.10.261\",\"lessThanOrEqual\":\"5.10.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"5.15.212\",\"lessThanOrEqual\":\"5.15.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"6.1.178\",\"lessThanOrEqual\":\"6.1.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"6.6.145\",\"lessThanOrEqual\":\"6.6.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"6.12.97\",\"lessThanOrEqual\":\"6.12.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"6.18.40\",\"lessThanOrEqual\":\"6.18.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"7.1.5\",\"lessThanOrEqual\":\"7.1.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"7.2-rc3\",\"lessThanOrEqual\":\"*\",\"versionType\":\"original_commit_for_fix\",\"status\":\"unaffected\"}]}]}],\"metrics\":{},\"references\":[{\"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\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"}]}}"
  }
}

GHSA-WXQX-M575-FH25

Vulnerability from github – Published: 2026-07-27 21:31 – Updated: 2026-07-27 21:31

Details

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.

Show details on source website

JSON

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{
  "affected": [],
  "aliases": [
    "CVE-2026-64547"
  ],
  "database_specific": {
    "cwe_ids": [],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2026-07-27T21:17:07Z",
    "severity": null
  },
  "details": "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": "GHSA-wxqx-m575-fh25",
  "modified": "2026-07-27T21:31:26Z",
  "published": "2026-07-27T21:31:26Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-64547"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/03f384bc0cb8d4a1301d4f5b0baef2d980258383"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/4dc8484be3302d187274364820d3bef6c62bde32"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/685e92934f11d5e215dad58813e2f9955ac2f436"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/b153cfe84b1340c69a13d0957665a2bfcf21239c"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/c087749815379e9af2fdbeb08bfc33870b103958"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/e4a87126c085b097d29e17e3b7647295bba8be7c"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/ea866cab12db1a2100b400a8b03569e5bc0ee29a"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/f42217fa7d535e9ec4151f7971f06f6ea65e850a"
    }
  ],
  "schema_version": "1.4.0",
  "severity": []
}

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.

Detection rules are retrieved from Rulezet.

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.

Action not permitted

CVE-2026-64547 (GCVE-0-2026-64547)

GHSA-WXQX-M575-FH25

Tags

Sightings

Nomenclature