Vulnerability-Lookup

GHSA-GP53-Q766-MXQ2

Vulnerability from github – Published: 2024-10-21 21:30 – Updated: 2024-10-25 21:31

Details

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

Bluetooth: L2CAP: Fix u8 overflow

By keep sending L2CAP_CONF_REQ packets, chan->num_conf_rsp increases multiple times and eventually it will wrap around the maximum number (i.e., 255). This patch prevents this by adding a boundary check with L2CAP_MAX_CONF_RSP

Btmon log: Bluetooth monitor ver 5.64 = Note: Linux version 6.1.0-rc2 (x86_64) 0.264594 = Note: Bluetooth subsystem version 2.22 0.264636 @ MGMT Open: btmon (privileged) version 1.22 {0x0001} 0.272191 = New Index: 00:00:00:00:00:00 (Primary,Virtual,hci0) [hci0] 13.877604 @ RAW Open: 9496 (privileged) version 2.22 {0x0002} 13.890741 = Open Index: 00:00:00:00:00:00 [hci0] 13.900426 (...)

ACL Data RX: Handle 200 flags 0x00 dlen 1033 #32 [hci0] 14.273106 invalid packet size (12 != 1033) 08 00 01 00 02 01 04 00 01 10 ff ff ............ ACL Data RX: Handle 200 flags 0x00 dlen 1547 #33 [hci0] 14.273561 invalid packet size (14 != 1547) 0a 00 01 00 04 01 06 00 40 00 00 00 00 00 ........@..... ACL Data RX: Handle 200 flags 0x00 dlen 2061 #34 [hci0] 14.274390 invalid packet size (16 != 2061) 0c 00 01 00 04 01 08 00 40 00 00 00 00 00 00 04 ........@....... ACL Data RX: Handle 200 flags 0x00 dlen 2061 #35 [hci0] 14.274932 invalid packet size (16 != 2061) 0c 00 01 00 04 01 08 00 40 00 00 00 07 00 03 00 ........@....... = bluetoothd: Bluetooth daemon 5.43 14.401828 ACL Data RX: Handle 200 flags 0x00 dlen 1033 #36 [hci0] 14.275753 invalid packet size (12 != 1033) 08 00 01 00 04 01 04 00 40 00 00 00 ........@...

Severity ?

5.5 (Medium)


                  
                    CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Show details on source website

JSON

To clipboard

{
  "affected": [],
  "aliases": [
    "CVE-2022-48947"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-190"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2024-10-21T20:15:06Z",
    "severity": "MODERATE"
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nBluetooth: L2CAP: Fix u8 overflow\n\nBy keep sending L2CAP_CONF_REQ packets, chan-\u003enum_conf_rsp increases\nmultiple times and eventually it will wrap around the maximum number\n(i.e., 255).\nThis patch prevents this by adding a boundary check with\nL2CAP_MAX_CONF_RSP\n\nBtmon log:\nBluetooth monitor ver 5.64\n= Note: Linux version 6.1.0-rc2 (x86_64)                               0.264594\n= Note: Bluetooth subsystem version 2.22                               0.264636\n@ MGMT Open: btmon (privileged) version 1.22                  {0x0001} 0.272191\n= New Index: 00:00:00:00:00:00 (Primary,Virtual,hci0)          [hci0] 13.877604\n@ RAW Open: 9496 (privileged) version 2.22                   {0x0002} 13.890741\n= Open Index: 00:00:00:00:00:00                                [hci0] 13.900426\n(...)\n\u003e ACL Data RX: Handle 200 flags 0x00 dlen 1033             #32 [hci0] 14.273106\n        invalid packet size (12 != 1033)\n        08 00 01 00 02 01 04 00 01 10 ff ff              ............\n\u003e ACL Data RX: Handle 200 flags 0x00 dlen 1547             #33 [hci0] 14.273561\n        invalid packet size (14 != 1547)\n        0a 00 01 00 04 01 06 00 40 00 00 00 00 00        ........@.....\n\u003e ACL Data RX: Handle 200 flags 0x00 dlen 2061             #34 [hci0] 14.274390\n        invalid packet size (16 != 2061)\n        0c 00 01 00 04 01 08 00 40 00 00 00 00 00 00 04  ........@.......\n\u003e ACL Data RX: Handle 200 flags 0x00 dlen 2061             #35 [hci0] 14.274932\n        invalid packet size (16 != 2061)\n        0c 00 01 00 04 01 08 00 40 00 00 00 07 00 03 00  ........@.......\n= bluetoothd: Bluetooth daemon 5.43                                   14.401828\n\u003e ACL Data RX: Handle 200 flags 0x00 dlen 1033             #36 [hci0] 14.275753\n        invalid packet size (12 != 1033)\n        08 00 01 00 04 01 04 00 40 00 00 00              ........@...",
  "id": "GHSA-gp53-q766-mxq2",
  "modified": "2024-10-25T21:31:26Z",
  "published": "2024-10-21T21:30:50Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2022-48947"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/19a78143961a197de8502f4f29c453b913dc3c29"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/49d5867819ab7c744852b45509e8469839c07e0e"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/5550bbf709c323194881737fd290c4bada9e6ead"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/95f1847a361c7b4bf7d74c06ecb6968455082c1a"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/9fdc79b571434af7bc742da40a3405f038b637a7"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/ad528fde0702903208d0a79d88d5a42ae3fc235b"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/bcd70260ef56e0aee8a4fc6cd214a419900b0765"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/f3fe6817156a2ad4b06f01afab04638a34d7c9a6"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
      "type": "CVSS_V3"
    }
  ]
}

CVE-2022-48947 (GCVE-0-2022-48947)

Vulnerability from cvelistv5 – Published: 2024-10-21 20:05 – Updated: 2025-12-23 13:21

Title

Bluetooth: L2CAP: Fix u8 overflow

Summary

In the Linux kernel, the following vulnerability has been resolved: Bluetooth: L2CAP: Fix u8 overflow By keep sending L2CAP_CONF_REQ packets, chan->num_conf_rsp increases multiple times and eventually it will wrap around the maximum number (i.e., 255). This patch prevents this by adding a boundary check with L2CAP_MAX_CONF_RSP Btmon log: Bluetooth monitor ver 5.64 = Note: Linux version 6.1.0-rc2 (x86_64) 0.264594 = Note: Bluetooth subsystem version 2.22 0.264636 @ MGMT Open: btmon (privileged) version 1.22 {0x0001} 0.272191 = New Index: 00:00:00:00:00:00 (Primary,Virtual,hci0) [hci0] 13.877604 @ RAW Open: 9496 (privileged) version 2.22 {0x0002} 13.890741 = Open Index: 00:00:00:00:00:00 [hci0] 13.900426 (...) > ACL Data RX: Handle 200 flags 0x00 dlen 1033 #32 [hci0] 14.273106 invalid packet size (12 != 1033) 08 00 01 00 02 01 04 00 01 10 ff ff ............ > ACL Data RX: Handle 200 flags 0x00 dlen 1547 #33 [hci0] 14.273561 invalid packet size (14 != 1547) 0a 00 01 00 04 01 06 00 40 00 00 00 00 00 ........@..... > ACL Data RX: Handle 200 flags 0x00 dlen 2061 #34 [hci0] 14.274390 invalid packet size (16 != 2061) 0c 00 01 00 04 01 08 00 40 00 00 00 00 00 00 04 ........@....... > ACL Data RX: Handle 200 flags 0x00 dlen 2061 #35 [hci0] 14.274932 invalid packet size (16 != 2061) 0c 00 01 00 04 01 08 00 40 00 00 00 07 00 03 00 ........@....... = bluetoothd: Bluetooth daemon 5.43 14.401828 > ACL Data RX: Handle 200 flags 0x00 dlen 1033 #36 [hci0] 14.275753 invalid packet size (12 != 1033) 08 00 01 00 04 01 04 00 40 00 00 00 ........@...

Severity ?

No CVSS data available.

Assigner

Linux

References

URL

Tags

	https://git.kernel.org/stable/c/49d5867819ab7c744…
	https://git.kernel.org/stable/c/95f1847a361c7b4bf…
	https://git.kernel.org/stable/c/ad528fde070290320…
	https://git.kernel.org/stable/c/9fdc79b571434af7b…
	https://git.kernel.org/stable/c/f3fe6817156a2ad4b…
	https://git.kernel.org/stable/c/19a78143961a197de…
	https://git.kernel.org/stable/c/5550bbf709c323194…
	https://git.kernel.org/stable/c/bcd70260ef56e0aee…

Impacted products

Vendor

Product

Version

Linux

Affected: f2fcfcd670257236ebf2088bbdf26f6a8ef459fe , < 49d5867819ab7c744852b45509e8469839c07e0e (git)
Affected: f2fcfcd670257236ebf2088bbdf26f6a8ef459fe , < 95f1847a361c7b4bf7d74c06ecb6968455082c1a (git)
Affected: f2fcfcd670257236ebf2088bbdf26f6a8ef459fe , < ad528fde0702903208d0a79d88d5a42ae3fc235b (git)
Affected: f2fcfcd670257236ebf2088bbdf26f6a8ef459fe , < 9fdc79b571434af7bc742da40a3405f038b637a7 (git)
Affected: f2fcfcd670257236ebf2088bbdf26f6a8ef459fe , < f3fe6817156a2ad4b06f01afab04638a34d7c9a6 (git)
Affected: f2fcfcd670257236ebf2088bbdf26f6a8ef459fe , < 19a78143961a197de8502f4f29c453b913dc3c29 (git)
Affected: f2fcfcd670257236ebf2088bbdf26f6a8ef459fe , < 5550bbf709c323194881737fd290c4bada9e6ead (git)
Affected: f2fcfcd670257236ebf2088bbdf26f6a8ef459fe , < bcd70260ef56e0aee8a4fc6cd214a419900b0765 (git)

Linux

Affected: 2.6.32
Unaffected: 0 , < 2.6.32 (semver)
Unaffected: 4.9.337 , ≤ 4.9.* (semver)
Unaffected: 4.14.303 , ≤ 4.14.* (semver)
Unaffected: 4.19.270 , ≤ 4.19.* (semver)
Unaffected: 5.4.229 , ≤ 5.4.* (semver)
Unaffected: 5.10.161 , ≤ 5.10.* (semver)
Unaffected: 5.15.85 , ≤ 5.15.* (semver)
Unaffected: 6.0.15 , ≤ 6.0.* (semver)
Unaffected: 6.1 , ≤ * (original_commit_for_fix)

Show details on NVD website

JSON

To clipboard

{
  "containers": {
    "adp": [
      {
        "metrics": [
          {
            "other": {
              "content": {
                "id": "CVE-2022-48947",
                "options": [
                  {
                    "Exploitation": "none"
                  },
                  {
                    "Automatable": "no"
                  },
                  {
                    "Technical Impact": "partial"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2024-10-22T13:22:07.757358Z",
                "version": "2.0.3"
              },
              "type": "ssvc"
            }
          }
        ],
        "providerMetadata": {
          "dateUpdated": "2024-10-22T13:28:41.276Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "title": "CISA ADP Vulnrichment"
      }
    ],
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "net/bluetooth/l2cap_core.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThan": "49d5867819ab7c744852b45509e8469839c07e0e",
              "status": "affected",
              "version": "f2fcfcd670257236ebf2088bbdf26f6a8ef459fe",
              "versionType": "git"
            },
            {
              "lessThan": "95f1847a361c7b4bf7d74c06ecb6968455082c1a",
              "status": "affected",
              "version": "f2fcfcd670257236ebf2088bbdf26f6a8ef459fe",
              "versionType": "git"
            },
            {
              "lessThan": "ad528fde0702903208d0a79d88d5a42ae3fc235b",
              "status": "affected",
              "version": "f2fcfcd670257236ebf2088bbdf26f6a8ef459fe",
              "versionType": "git"
            },
            {
              "lessThan": "9fdc79b571434af7bc742da40a3405f038b637a7",
              "status": "affected",
              "version": "f2fcfcd670257236ebf2088bbdf26f6a8ef459fe",
              "versionType": "git"
            },
            {
              "lessThan": "f3fe6817156a2ad4b06f01afab04638a34d7c9a6",
              "status": "affected",
              "version": "f2fcfcd670257236ebf2088bbdf26f6a8ef459fe",
              "versionType": "git"
            },
            {
              "lessThan": "19a78143961a197de8502f4f29c453b913dc3c29",
              "status": "affected",
              "version": "f2fcfcd670257236ebf2088bbdf26f6a8ef459fe",
              "versionType": "git"
            },
            {
              "lessThan": "5550bbf709c323194881737fd290c4bada9e6ead",
              "status": "affected",
              "version": "f2fcfcd670257236ebf2088bbdf26f6a8ef459fe",
              "versionType": "git"
            },
            {
              "lessThan": "bcd70260ef56e0aee8a4fc6cd214a419900b0765",
              "status": "affected",
              "version": "f2fcfcd670257236ebf2088bbdf26f6a8ef459fe",
              "versionType": "git"
            }
          ]
        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "net/bluetooth/l2cap_core.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "2.6.32"
            },
            {
              "lessThan": "2.6.32",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "4.9.*",
              "status": "unaffected",
              "version": "4.9.337",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "4.14.*",
              "status": "unaffected",
              "version": "4.14.303",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "4.19.*",
              "status": "unaffected",
              "version": "4.19.270",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.4.*",
              "status": "unaffected",
              "version": "5.4.229",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.10.*",
              "status": "unaffected",
              "version": "5.10.161",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.15.*",
              "status": "unaffected",
              "version": "5.15.85",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.0.*",
              "status": "unaffected",
              "version": "6.0.15",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "6.1",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "cpeApplicability": [
        {
          "nodes": [
            {
              "cpeMatch": [
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "4.9.337",
                  "versionStartIncluding": "2.6.32",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "4.14.303",
                  "versionStartIncluding": "2.6.32",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "4.19.270",
                  "versionStartIncluding": "2.6.32",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "5.4.229",
                  "versionStartIncluding": "2.6.32",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "5.10.161",
                  "versionStartIncluding": "2.6.32",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "5.15.85",
                  "versionStartIncluding": "2.6.32",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.0.15",
                  "versionStartIncluding": "2.6.32",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.1",
                  "versionStartIncluding": "2.6.32",
                  "vulnerable": true
                }
              ],
              "negate": false,
              "operator": "OR"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nBluetooth: L2CAP: Fix u8 overflow\n\nBy keep sending L2CAP_CONF_REQ packets, chan-\u003enum_conf_rsp increases\nmultiple times and eventually it will wrap around the maximum number\n(i.e., 255).\nThis patch prevents this by adding a boundary check with\nL2CAP_MAX_CONF_RSP\n\nBtmon log:\nBluetooth monitor ver 5.64\n= Note: Linux version 6.1.0-rc2 (x86_64)                               0.264594\n= Note: Bluetooth subsystem version 2.22                               0.264636\n@ MGMT Open: btmon (privileged) version 1.22                  {0x0001} 0.272191\n= New Index: 00:00:00:00:00:00 (Primary,Virtual,hci0)          [hci0] 13.877604\n@ RAW Open: 9496 (privileged) version 2.22                   {0x0002} 13.890741\n= Open Index: 00:00:00:00:00:00                                [hci0] 13.900426\n(...)\n\u003e ACL Data RX: Handle 200 flags 0x00 dlen 1033             #32 [hci0] 14.273106\n        invalid packet size (12 != 1033)\n        08 00 01 00 02 01 04 00 01 10 ff ff              ............\n\u003e ACL Data RX: Handle 200 flags 0x00 dlen 1547             #33 [hci0] 14.273561\n        invalid packet size (14 != 1547)\n        0a 00 01 00 04 01 06 00 40 00 00 00 00 00        ........@.....\n\u003e ACL Data RX: Handle 200 flags 0x00 dlen 2061             #34 [hci0] 14.274390\n        invalid packet size (16 != 2061)\n        0c 00 01 00 04 01 08 00 40 00 00 00 00 00 00 04  ........@.......\n\u003e ACL Data RX: Handle 200 flags 0x00 dlen 2061             #35 [hci0] 14.274932\n        invalid packet size (16 != 2061)\n        0c 00 01 00 04 01 08 00 40 00 00 00 07 00 03 00  ........@.......\n= bluetoothd: Bluetooth daemon 5.43                                   14.401828\n\u003e ACL Data RX: Handle 200 flags 0x00 dlen 1033             #36 [hci0] 14.275753\n        invalid packet size (12 != 1033)\n        08 00 01 00 04 01 04 00 40 00 00 00              ........@..."
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2025-12-23T13:21:14.514Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
        {
          "url": "https://git.kernel.org/stable/c/49d5867819ab7c744852b45509e8469839c07e0e"
        },
        {
          "url": "https://git.kernel.org/stable/c/95f1847a361c7b4bf7d74c06ecb6968455082c1a"
        },
        {
          "url": "https://git.kernel.org/stable/c/ad528fde0702903208d0a79d88d5a42ae3fc235b"
        },
        {
          "url": "https://git.kernel.org/stable/c/9fdc79b571434af7bc742da40a3405f038b637a7"
        },
        {
          "url": "https://git.kernel.org/stable/c/f3fe6817156a2ad4b06f01afab04638a34d7c9a6"
        },
        {
          "url": "https://git.kernel.org/stable/c/19a78143961a197de8502f4f29c453b913dc3c29"
        },
        {
          "url": "https://git.kernel.org/stable/c/5550bbf709c323194881737fd290c4bada9e6ead"
        },
        {
          "url": "https://git.kernel.org/stable/c/bcd70260ef56e0aee8a4fc6cd214a419900b0765"
        }
      ],
      "title": "Bluetooth: L2CAP: Fix u8 overflow",
      "x_generator": {
        "engine": "bippy-1.2.0"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2022-48947",
    "datePublished": "2024-10-21T20:05:36.491Z",
    "dateReserved": "2024-08-22T01:27:53.624Z",
    "dateUpdated": "2025-12-23T13:21:14.514Z",
    "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-GP53-Q766-MXQ2

CVE-2022-48947 (GCVE-0-2022-48947)

Tags

Sightings

Nomenclature