FKIE_CVE-2022-48947

Vulnerability from fkie_nvd - Published: 2024-10-21 20:15 - Updated: 2024-10-25 20:11
Severity ?
5.5 (Medium) - CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
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 ........@...
References
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/19a78143961a197de8502f4f29c453b913dc3c29Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/49d5867819ab7c744852b45509e8469839c07e0ePatch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/5550bbf709c323194881737fd290c4bada9e6eadPatch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/95f1847a361c7b4bf7d74c06ecb6968455082c1aPatch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/9fdc79b571434af7bc742da40a3405f038b637a7Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/ad528fde0702903208d0a79d88d5a42ae3fc235bPatch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/bcd70260ef56e0aee8a4fc6cd214a419900b0765Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/f3fe6817156a2ad4b06f01afab04638a34d7c9a6Patch
Impacted products
Vendor Product Version
linux linux_kernel *
linux linux_kernel *
linux linux_kernel *
linux linux_kernel *
linux linux_kernel *
linux linux_kernel *
linux linux_kernel *
linux linux_kernel 6.1
linux linux_kernel 6.1
linux linux_kernel 6.1
linux linux_kernel 6.1
linux linux_kernel 6.1
linux linux_kernel 6.1
linux linux_kernel 6.1
linux linux_kernel 6.1
To clipboard 

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  "cveTags": [],
  "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              ........@..."
    },
    {
      "lang": "es",
      "value": "En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: Bluetooth: L2CAP: Corregir desbordamiento de u8 Al seguir enviando paquetes L2CAP_CONF_REQ, chan-\u0026gt;num_conf_rsp aumenta varias veces y eventualmente alcanzar\u00e1 el n\u00famero m\u00e1ximo (es decir, 255). Este parche evita esto a\u00f1adiendo una comprobaci\u00f3n de los l\u00edmites con L2CAP_MAX_CONF_RSP Btmon log: Bluetooth monitor ver 5.64 = Nota: Linux versi\u00f3n 6.1.0-rc2 (x86_64) 0.264594 = Nota: Subsistema Bluetooth versi\u00f3n 2.22 0.264636 @ MGMT Open: btmon (privilegiado) versi\u00f3n 1.22 {0x0001} 0.272191 = Nuevo \u00edndice: 00:00:00:00:00:00 (Principal,Virtual,hci0) [hci0] 13.877604 @ RAW Open: 9496 (privilegiado) versi\u00f3n 2.22 {0x0002} 13.890741 = Abierto \u00cdndice: 00:00:00:00:00:00 [hci0] 13.900426 (...) \u0026gt; ACL Data RX: Manejar 200 indicadores 0x00 dlen 1033 #32 [hci0] 14.273106 tama\u00f1o de paquete no v\u00e1lido (12 != 1033) 08 00 01 00 02 01 04 00 01 10 ff ff ............ \u0026gt; ACL Data RX: Manejar 200 indicadores 0x00 dlen 1547 #33 [hci0] 14.273561 tama\u00f1o de paquete no v\u00e1lido (14 != 1547) 0a 00 01 00 04 01 06 00 40 00 00 00 00 00 ........@..... \u0026gt; ACL Data RX: Manejar 200 indicadores 0x00 dlen 2061 #34 [hci0] 14.274390 tama\u00f1o de paquete no v\u00e1lido (16 != 2061) 0c 00 01 00 04 01 08 00 40 00 00 00 00 00 00 04 ........@....... \u0026gt; ACL Data RX: Manejar 200 indicadores 0x00 dlen 2061 #35 [hci0] 14.274932 tama\u00f1o de paquete no v\u00e1lido (16 != 2061) 0c 00 01 00 04 01 08 00 40 00 00 00 07 00 03 00 ........@....... = bluetoothd: Daemon Bluetooth 5.43 14.401828 \u0026gt; ACL Data RX: Manejar 200 indicadores 0x00 dlen 1033 #36 [hci0] 14.275753 tama\u00f1o de paquete no v\u00e1lido (12 != 1033) 08 00 01 00 04 01 04 00 40 00 00 00 ........@..."
    }
  ],
  "id": "CVE-2022-48947",
  "lastModified": "2024-10-25T20:11:45.473",
  "metrics": {
    "cvssMetricV31": [
      {
        "cvssData": {
          "attackComplexity": "LOW",
          "attackVector": "LOCAL",
          "availabilityImpact": "HIGH",
          "baseScore": 5.5,
          "baseSeverity": "MEDIUM",
          "confidentialityImpact": "NONE",
          "integrityImpact": "NONE",
          "privilegesRequired": "LOW",
          "scope": "UNCHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
          "version": "3.1"
        },
        "exploitabilityScore": 1.8,
        "impactScore": 3.6,
        "source": "nvd@nist.gov",
        "type": "Primary"
      }
    ]
  },
  "published": "2024-10-21T20:15:06.150",
  "references": [
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  "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
  "vulnStatus": "Analyzed",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-190"
        }
      ],
      "source": "nvd@nist.gov",
      "type": "Primary"
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}


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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.
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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.



Detection rules are retrieved from Rulezet.