cve-2022-48947
Vulnerability from cvelistv5
Published
2024-10-21 20:05
Modified
2024-12-19 08:11
Severity ?
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
Show details on NVD website

To clipboard 

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                "id": "CVE-2022-48947",
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                    "Automatable": "no"
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                "timestamp": "2024-10-22T13:22:07.757358Z",
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          "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              ........@..."
        }
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        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
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          "url": "https://git.kernel.org/stable/c/95f1847a361c7b4bf7d74c06ecb6968455082c1a"
        },
        {
          "url": "https://git.kernel.org/stable/c/ad528fde0702903208d0a79d88d5a42ae3fc235b"
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        },
        {
          "url": "https://git.kernel.org/stable/c/bcd70260ef56e0aee8a4fc6cd214a419900b0765"
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      "title": "Bluetooth: L2CAP: Fix u8 overflow",
      "x_generator": {
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  "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": "2024-12-19T08:11:03.504Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.1",
  "vulnerability-lookup:meta": {
    "nvd": "{\"cve\":{\"id\":\"CVE-2022-48947\",\"sourceIdentifier\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"published\":\"2024-10-21T20:15:06.150\",\"lastModified\":\"2024-10-25T20:11:45.473\",\"vulnStatus\":\"Analyzed\",\"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 ........@...\"}],\"metrics\":{\"cvssMetricV31\":[{\"source\":\"nvd@nist.gov\",\"type\":\"Primary\",\"cvssData\":{\"version\":\"3.1\",\"vectorString\":\"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H\",\"baseScore\":5.5,\"baseSeverity\":\"MEDIUM\",\"attackVector\":\"LOCAL\",\"attackComplexity\":\"LOW\",\"privilegesRequired\":\"LOW\",\"userInteraction\":\"NONE\",\"scope\":\"UNCHANGED\",\"confidentialityImpact\":\"NONE\",\"integrityImpact\":\"NONE\",\"availabilityImpact\":\"HIGH\"},\"exploitabilityScore\":1.8,\"impactScore\":3.6}]},\"weaknesses\":[{\"source\":\"nvd@nist.gov\",\"type\":\"Primary\",\"description\":[{\"lang\":\"en\",\"value\":\"CWE-190\"}]}],\"configurations\":[{\"nodes\":[{\"operator\":\"OR\",\"negate\":false,\"cpeMatch\":[{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionEndExcluding\":\"4.9.337\",\"matchCriteriaId\":\"9FFBA9B5-26DC-4802-9A86-F7B886954E4A\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"4.10\",\"versionEndExcluding\":\"4.14.303\",\"matchCriteriaId\":\"1E7450AD-4739-46F0-B81B-C02E7B35A97B\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"4.15\",\"versionEndExcluding\":\"4.19.270\",\"matchCriteriaId\":\"AE8904A3-99BE-4E49-9682-1F90A6373F4F\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"4.20\",\"versionEndExcluding\":\"5.4.229\",\"matchCriteriaId\":\"A0C0D95E-414A-445E-941B-3EF6A4D3A093\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"5.5\",\"versionEndExcluding\":\"5.10.161\",\"matchCriteriaId\":\"6CD83369-DB79-46EF-B731-E327A63A4E1B\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"5.11\",\"versionEndExcluding\":\"5.15.85\",\"matchCriteriaId\":\"E0D49B1E-E996-4A13-9C5C-23C64BBD0E0F\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"5.16\",\"versionEndExcluding\":\"6.0.15\",\"matchCriteriaId\":\"3E66ABBB-C60E-481F-88C6-ED81661DFC31\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:6.1:rc1:*:*:*:*:*:*\",\"matchCriteriaId\":\"E7E331DA-1FB0-4DEC-91AC-7DA69D461C11\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:6.1:rc2:*:*:*:*:*:*\",\"matchCriteriaId\":\"17F0B248-42CF-4AE6-A469-BB1BAE7F4705\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:6.1:rc3:*:*:*:*:*:*\",\"matchCriteriaId\":\"E2422816-0C14-4B5E-A1E6-A9D776E5C49B\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:6.1:rc4:*:*:*:*:*:*\",\"matchCriteriaId\":\"1C6E00FE-5FB9-4D20-A1A1-5A32128F9B76\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:6.1:rc5:*:*:*:*:*:*\",\"matchCriteriaId\":\"35B26BE4-43A6-4A36-A7F6-5B3F572D9186\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:6.1:rc6:*:*:*:*:*:*\",\"matchCriteriaId\":\"3FFFB0B3-930D-408A-91E2-BAE0C2715D80\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:6.1:rc7:*:*:*:*:*:*\",\"matchCriteriaId\":\"8535320E-A0DB-4277-800E-D0CE5BBA59E8\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:6.1:rc8:*:*:*:*:*:*\",\"matchCriteriaId\":\"21718AA4-4056-40F2-968E-BDAA465A7872\"}]}]}],\"references\":[{\"url\":\"https://git.kernel.org/stable/c/19a78143961a197de8502f4f29c453b913dc3c29\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/49d5867819ab7c744852b45509e8469839c07e0e\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/5550bbf709c323194881737fd290c4bada9e6ead\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/95f1847a361c7b4bf7d74c06ecb6968455082c1a\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/9fdc79b571434af7bc742da40a3405f038b637a7\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/ad528fde0702903208d0a79d88d5a42ae3fc235b\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/bcd70260ef56e0aee8a4fc6cd214a419900b0765\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/f3fe6817156a2ad4b06f01afab04638a34d7c9a6\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]}]}}"
  }
}


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  • Patched: This vulnerability was successfully patched by the user reporting the sighting.
  • Not exploited: This vulnerability was not exploited or seen by the user reporting the sighting.
  • Not confirmed: The user expresses doubt about the veracity of the vulnerability.
  • Not patched: This vulnerability was not successfully patched by the user reporting the sighting.