CVE-2026-98296 (GCVE-0-2026-98296)

Vulnerability from cvelistv5 – Published: 2026-10-06 08:45 – Updated: 2026-10-06 08:45
VLAI
Title
Bluetooth: btintel_pcie: validate TX skb length in send_sync
Summary
In the Linux kernel, the following vulnerability has been resolved: Bluetooth: btintel_pcie: validate TX skb length in send_sync btintel_pcie_prepare_tx() copies skb->len bytes into a fixed BTINTEL_PCIE_BUFFER_SIZE (4096) DMA slot via an unchecked memcpy. Oversized packets are currently rejected only in btintel_pcie_send_frame(); any future caller of btintel_pcie_send_sync() would silently overflow the DMA buffer. Add the bounds check in btintel_pcie_send_sync() itself, right before skb_push() and the DMA copy.
Severity
No CVSS data available.
Assigner
References
Impacted products
Vendor Product Version
Linux Linux Affected: 6e65a09f927566f257322358d429b267548473eb , < 84f353256e170dc4865d45007d1bc446ed566da7 (git)
Affected: 6e65a09f927566f257322358d429b267548473eb , < c298a61e18029401486c40298a50fbeea7e7b663 (git)
Affected: 6e65a09f927566f257322358d429b267548473eb , < 4b837ebd0ea21ae5cc26f02dc042edc6fe7b46b9 (git)
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Linux Linux Affected: 6.10
Unaffected: 0 , < 6.10 (semver)
Unaffected: 6.18.54 , ≤ 6.18.* (semver)
Unaffected: 7.2.8 , ≤ 7.2.* (semver)
Unaffected: 7.3-rc4 , ≤ * (original_commit_for_fix)
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{
  "containers": {
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          "product": "Linux",
          "programFiles": [
            "drivers/bluetooth/btintel_pcie.c"
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                }
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              "negate": false,
              "operator": "OR"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nBluetooth: btintel_pcie: validate TX skb length in send_sync\n\nbtintel_pcie_prepare_tx() copies skb-\u003elen bytes into a fixed\nBTINTEL_PCIE_BUFFER_SIZE (4096) DMA slot via an unchecked memcpy.\nOversized packets are currently rejected only in\nbtintel_pcie_send_frame(); any future caller of\nbtintel_pcie_send_sync() would silently overflow the DMA buffer.\n\nAdd the bounds check in btintel_pcie_send_sync() itself, right\nbefore skb_push() and the DMA copy."
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-10-06T08:45:55.034Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
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      "title": "Bluetooth: btintel_pcie: validate TX skb length in send_sync",
      "x_generator": {
        "engine": "bippy-1.2.0"
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  "cveMetadata": {
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    "assignerShortName": "Linux",
    "cveId": "CVE-2026-98296",
    "datePublished": "2026-10-06T08:45:55.034Z",
    "dateReserved": "2026-09-25T10:25:14.337Z",
    "dateUpdated": "2026-10-06T08:45:55.034Z",
    "state": "PUBLISHED"
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      "id": "msrc_CVE-2026-98296",
      "initial_release_date": "2026-10-20T22:24:02.000Z",
      "product_status:under_investigation": "1",
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      "title": "Bluetooth: btintel_pcie: validate TX skb length in send_sync",
      "url": "https://msrc.microsoft.com/csaf/vex/2026/msrc_cve-2026-98296.json",
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    "nvd": {
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        "descriptions": [
          {
            "lang": "en",
            "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nBluetooth: btintel_pcie: validate TX skb length in send_sync\n\nbtintel_pcie_prepare_tx() copies skb-\u003elen bytes into a fixed\nBTINTEL_PCIE_BUFFER_SIZE (4096) DMA slot via an unchecked memcpy.\nOversized packets are currently rejected only in\nbtintel_pcie_send_frame(); any future caller of\nbtintel_pcie_send_sync() would silently overflow the DMA buffer.\n\nAdd the bounds check in btintel_pcie_send_sync() itself, right\nbefore skb_push() and the DMA copy."
          }
        ],
        "id": "CVE-2026-98296",
        "lastModified": "2026-10-19T10:18:31.397",
        "metrics": {},
        "published": "2026-10-06T09:18:20.280",
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        "vulnStatus": "Received"
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      "title": "kernel: Bluetooth: btintel_pcie: validate TX skb length in send_sync",
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      "url": "https://ftp.suse.com/pub/projects/security/csaf-vex/2026/cve-2026-98296.json",
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    }
  }
}



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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.

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  • 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.
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  • 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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