github - ghsa-mp66-rx49-f278

GHSA-MP66-RX49-F278

Vulnerability from github – Published: 2025-12-08 03:31 – Updated: 2025-12-08 03:31

Details

In the Linux kernel, the following vulnerability has been resolved:

Bluetooth: hci_event: validate skb length for unknown CC opcode

In hci_cmd_complete_evt(), if the command complete event has an unknown opcode, we assume the first byte of the remaining skb->data contains the return status. However, parameter data has previously been pulled in hci_event_func(), which may leave the skb empty. If so, using skb->data[0] for the return status uses un-init memory.

The fix is to check skb->len before using skb->data.

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{
  "affected": [],
  "aliases": [
    "CVE-2025-40301"
  ],
  "database_specific": {
    "cwe_ids": [],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2025-12-08T01:16:02Z",
    "severity": null
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nBluetooth: hci_event: validate skb length for unknown CC opcode\n\nIn hci_cmd_complete_evt(), if the command complete event has an unknown\nopcode, we assume the first byte of the remaining skb-\u003edata contains the\nreturn status. However, parameter data has previously been pulled in\nhci_event_func(), which may leave the skb empty. If so, using skb-\u003edata[0]\nfor the return status uses un-init memory.\n\nThe fix is to check skb-\u003elen before using skb-\u003edata.",
  "id": "GHSA-mp66-rx49-f278",
  "modified": "2025-12-08T03:31:01Z",
  "published": "2025-12-08T03:31:01Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2025-40301"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/1a0ddaaf97405dbd11d4cb5a961a3f82400e8a50"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/5c5f1f64681cc889d9b13e4a61285e9e029d6ab5"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/779f83a91d4f1bf5ddfeaf528420cbb6dbf03fa8"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/cf2c2acec1cf456c3d11c11a7589e886a0f963a9"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/fea895de78d3bb2f0c09db9f10b18f8121b15759"
    }
  ],
  "schema_version": "1.4.0",
  "severity": []
}

CVE-2025-40301 (GCVE-0-2025-40301)

Vulnerability from cvelistv5 – Published: 2025-12-08 00:46 – Updated: 2025-12-08 00:46

Summary

In the Linux kernel, the following vulnerability has been resolved: Bluetooth: hci_event: validate skb length for unknown CC opcode In hci_cmd_complete_evt(), if the command complete event has an unknown opcode, we assume the first byte of the remaining skb->data contains the return status. However, parameter data has previously been pulled in hci_event_func(), which may leave the skb empty. If so, using skb->data[0] for the return status uses un-init memory. The fix is to check skb->len before using skb->data.

Severity ?

No CVSS data available.

Assigner

Linux

References

URL

Tags

	https://git.kernel.org/stable/c/fea895de78d3bb2f0…
	https://git.kernel.org/stable/c/779f83a91d4f1bf5d…
	https://git.kernel.org/stable/c/cf2c2acec1cf456c3…
	https://git.kernel.org/stable/c/1a0ddaaf97405dbd1…
	https://git.kernel.org/stable/c/5c5f1f64681cc889d…

Impacted products

Vendor

Product

Version

Linux

Affected: afcb3369f46ed5dc883a7b92f2dd1e264d79d388 , < fea895de78d3bb2f0c09db9f10b18f8121b15759 (git)
Affected: afcb3369f46ed5dc883a7b92f2dd1e264d79d388 , < 779f83a91d4f1bf5ddfeaf528420cbb6dbf03fa8 (git)
Affected: afcb3369f46ed5dc883a7b92f2dd1e264d79d388 , < cf2c2acec1cf456c3d11c11a7589e886a0f963a9 (git)
Affected: afcb3369f46ed5dc883a7b92f2dd1e264d79d388 , < 1a0ddaaf97405dbd11d4cb5a961a3f82400e8a50 (git)
Affected: afcb3369f46ed5dc883a7b92f2dd1e264d79d388 , < 5c5f1f64681cc889d9b13e4a61285e9e029d6ab5 (git)

Linux

Affected: 6.1
Unaffected: 0 , < 6.1 (semver)
Unaffected: 6.1.159 , ≤ 6.1.* (semver)
Unaffected: 6.6.117 , ≤ 6.6.* (semver)
Unaffected: 6.12.58 , ≤ 6.12.* (semver)
Unaffected: 6.17.8 , ≤ 6.17.* (semver)
Unaffected: 6.18 , ≤ * (original_commit_for_fix)

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{
  "containers": {
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "net/bluetooth/hci_event.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThan": "fea895de78d3bb2f0c09db9f10b18f8121b15759",
              "status": "affected",
              "version": "afcb3369f46ed5dc883a7b92f2dd1e264d79d388",
              "versionType": "git"
            },
            {
              "lessThan": "779f83a91d4f1bf5ddfeaf528420cbb6dbf03fa8",
              "status": "affected",
              "version": "afcb3369f46ed5dc883a7b92f2dd1e264d79d388",
              "versionType": "git"
            },
            {
              "lessThan": "cf2c2acec1cf456c3d11c11a7589e886a0f963a9",
              "status": "affected",
              "version": "afcb3369f46ed5dc883a7b92f2dd1e264d79d388",
              "versionType": "git"
            },
            {
              "lessThan": "1a0ddaaf97405dbd11d4cb5a961a3f82400e8a50",
              "status": "affected",
              "version": "afcb3369f46ed5dc883a7b92f2dd1e264d79d388",
              "versionType": "git"
            },
            {
              "lessThan": "5c5f1f64681cc889d9b13e4a61285e9e029d6ab5",
              "status": "affected",
              "version": "afcb3369f46ed5dc883a7b92f2dd1e264d79d388",
              "versionType": "git"
            }
          ]
        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "net/bluetooth/hci_event.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "6.1"
            },
            {
              "lessThan": "6.1",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.1.*",
              "status": "unaffected",
              "version": "6.1.159",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.6.*",
              "status": "unaffected",
              "version": "6.6.117",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.12.*",
              "status": "unaffected",
              "version": "6.12.58",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.17.*",
              "status": "unaffected",
              "version": "6.17.8",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "6.18",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "cpeApplicability": [
        {
          "nodes": [
            {
              "cpeMatch": [
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.1.159",
                  "versionStartIncluding": "6.1",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.6.117",
                  "versionStartIncluding": "6.1",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.12.58",
                  "versionStartIncluding": "6.1",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
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                  "versionStartIncluding": "6.1",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.18",
                  "versionStartIncluding": "6.1",
                  "vulnerable": true
                }
              ],
              "negate": false,
              "operator": "OR"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nBluetooth: hci_event: validate skb length for unknown CC opcode\n\nIn hci_cmd_complete_evt(), if the command complete event has an unknown\nopcode, we assume the first byte of the remaining skb-\u003edata contains the\nreturn status. However, parameter data has previously been pulled in\nhci_event_func(), which may leave the skb empty. If so, using skb-\u003edata[0]\nfor the return status uses un-init memory.\n\nThe fix is to check skb-\u003elen before using skb-\u003edata."
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2025-12-08T00:46:24.863Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
        {
          "url": "https://git.kernel.org/stable/c/fea895de78d3bb2f0c09db9f10b18f8121b15759"
        },
        {
          "url": "https://git.kernel.org/stable/c/779f83a91d4f1bf5ddfeaf528420cbb6dbf03fa8"
        },
        {
          "url": "https://git.kernel.org/stable/c/cf2c2acec1cf456c3d11c11a7589e886a0f963a9"
        },
        {
          "url": "https://git.kernel.org/stable/c/1a0ddaaf97405dbd11d4cb5a961a3f82400e8a50"
        },
        {
          "url": "https://git.kernel.org/stable/c/5c5f1f64681cc889d9b13e4a61285e9e029d6ab5"
        }
      ],
      "title": "Bluetooth: hci_event: validate skb length for unknown CC opcode",
      "x_generator": {
        "engine": "bippy-1.2.0"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2025-40301",
    "datePublished": "2025-12-08T00:46:24.863Z",
    "dateReserved": "2025-04-16T07:20:57.185Z",
    "dateUpdated": "2025-12-08T00:46:24.863Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}

Sightings

Author	Source	Type	Date

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.

Action not permitted

GHSA-MP66-RX49-F278

CVE-2025-40301 (GCVE-0-2025-40301)

Tags

Sightings

Nomenclature