CVE-2026-97976 (GCVE-0-2026-97976)

Vulnerability from cvelistv5 – Published: 2026-09-25 10:23 – Updated: 2026-09-25 10:23
VLAI
Title
Bluetooth: btintel_pcie: validate packet_len before skb_put_data
Summary
In the Linux kernel, the following vulnerability has been resolved: Bluetooth: btintel_pcie: validate packet_len before skb_put_data btintel_pcie_submit_rx_work() reads packet_len from rfh_hdr without checking if it exceeds the RX buffer size. An oversized packet_len can lead to an out-of-bounds read in skb_put_data(). Validate packet_len to ensure it is non-zero and does not exceed BTINTEL_PCIE_BUFFER_SIZE - sizeof(*rfh_hdr), logging an error when invalid. This issue was reported by Claude Mythos. It can be simulated either by using customized firmware configured to return an invalid packet_len or by modifying rfh_hdr->packet_len in the driver before calling btintel_pcie_submit_rx_work().
Severity
No CVSS data available.
Assigner
References
Impacted products
Vendor Product Version CPE status
Linux Linux Affected: c2b636b3f788d10486a6691ad6dd3ec4c93bd78e , < ab0159b1f7214ce9bad9862751e4553e635a21b1 (git)
Affected: c2b636b3f788d10486a6691ad6dd3ec4c93bd78e , < 73a50c636425cb9f7ab647b5a97bd14dd5610076 (git)
Affected: c2b636b3f788d10486a6691ad6dd3ec4c93bd78e , < 46884c0f92708f1d218fc94d88800227a19b52f8 (git)
Affected: c2b636b3f788d10486a6691ad6dd3ec4c93bd78e , < 6436e1b5331b1aebf905c13e0880a37032719b75 (git)
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Linux Linux Affected: 6.10
Unaffected: 0 , < 6.10 (semver)
Unaffected: 6.12.111 , ≤ 6.12.* (semver)
Unaffected: 6.18.53 , ≤ 6.18.* (semver)
Unaffected: 7.2.7 , ≤ 7.2.* (semver)
Unaffected: 7.3-rc3 , ≤ * (original_commit_for_fix)
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{
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        {
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          "product": "Linux",
          "programFiles": [
            "drivers/bluetooth/btintel_pcie.c"
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          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nBluetooth: btintel_pcie: validate packet_len before skb_put_data\n\nbtintel_pcie_submit_rx_work() reads packet_len from rfh_hdr without\nchecking if it exceeds the RX buffer size. An oversized packet_len\ncan lead to an out-of-bounds read in skb_put_data().\n\nValidate packet_len to ensure it is non-zero and does not exceed\nBTINTEL_PCIE_BUFFER_SIZE - sizeof(*rfh_hdr), logging an error when\ninvalid.\n\nThis issue was reported by Claude Mythos. It can be simulated either by\nusing customized firmware configured to return an invalid packet_len or\nby modifying rfh_hdr-\u003epacket_len in the driver before calling\nbtintel_pcie_submit_rx_work()."
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-09-25T10:23:14.596Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
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    "dateReserved": "2026-09-25T10:18:58.207Z",
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    "state": "PUBLISHED"
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            "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nBluetooth: btintel_pcie: validate packet_len before skb_put_data\n\nbtintel_pcie_submit_rx_work() reads packet_len from rfh_hdr without\nchecking if it exceeds the RX buffer size. An oversized packet_len\ncan lead to an out-of-bounds read in skb_put_data().\n\nValidate packet_len to ensure it is non-zero and does not exceed\nBTINTEL_PCIE_BUFFER_SIZE - sizeof(*rfh_hdr), logging an error when\ninvalid.\n\nThis issue was reported by Claude Mythos. It can be simulated either by\nusing customized firmware configured to return an invalid packet_len or\nby modifying rfh_hdr-\u003epacket_len in the driver before calling\nbtintel_pcie_submit_rx_work()."
          }
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        "id": "CVE-2026-97976",
        "lastModified": "2026-09-25T11:17:25.570",
        "metrics": {},
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        "vulnStatus": "Received"
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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.

Sightings

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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.



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.