{
    "data_version": "4.0",
    "data_type": "CVE",
    "data_format": "MITRE",
    "CVE_data_meta": {
        "ID": "CVE-2022-48947",
        "ASSIGNER": "cve@kernel.org",
        "STATE": "PUBLIC"
    },
    "description": {
        "description_data": [
            {
                "lang": "eng",
                "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->num_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> 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> 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> 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> 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> 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              ........@..."
            }
        ]
    },
    "problemtype": {
        "problemtype_data": [
            {
                "description": [
                    {
                        "lang": "eng",
                        "value": "n/a"
                    }
                ]
            }
        ]
    },
    "affects": {
        "vendor": {
            "vendor_data": [
                {
                    "vendor_name": "Linux",
                    "product": {
                        "product_data": [
                            {
                                "product_name": "Linux",
                                "version": {
                                    "version_data": [
                                        {
                                            "version_affected": "<",
                                            "version_name": "1da177e4c3f4",
                                            "version_value": "49d5867819ab"
                                        },
                                        {
                                            "version_value": "not down converted",
                                            "x_cve_json_5_version_data": {
                                                "versions": [
                                                    {
                                                        "version": "4.9.337",
                                                        "lessThanOrEqual": "4.9.*",
                                                        "status": "unaffected",
                                                        "versionType": "semver"
                                                    },
                                                    {
                                                        "version": "4.14.303",
                                                        "lessThanOrEqual": "4.14.*",
                                                        "status": "unaffected",
                                                        "versionType": "semver"
                                                    },
                                                    {
                                                        "version": "4.19.270",
                                                        "lessThanOrEqual": "4.19.*",
                                                        "status": "unaffected",
                                                        "versionType": "semver"
                                                    },
                                                    {
                                                        "version": "5.4.229",
                                                        "lessThanOrEqual": "5.4.*",
                                                        "status": "unaffected",
                                                        "versionType": "semver"
                                                    },
                                                    {
                                                        "version": "5.10.161",
                                                        "lessThanOrEqual": "5.10.*",
                                                        "status": "unaffected",
                                                        "versionType": "semver"
                                                    },
                                                    {
                                                        "version": "5.15.85",
                                                        "lessThanOrEqual": "5.15.*",
                                                        "status": "unaffected",
                                                        "versionType": "semver"
                                                    },
                                                    {
                                                        "version": "6.0.15",
                                                        "lessThanOrEqual": "6.0.*",
                                                        "status": "unaffected",
                                                        "versionType": "semver"
                                                    },
                                                    {
                                                        "version": "6.1",
                                                        "lessThanOrEqual": "*",
                                                        "status": "unaffected",
                                                        "versionType": "original_commit_for_fix"
                                                    }
                                                ],
                                                "defaultStatus": "affected"
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    "references": {
        "reference_data": [
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                "url": "https://git.kernel.org/stable/c/49d5867819ab7c744852b45509e8469839c07e0e",
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                "name": "https://git.kernel.org/stable/c/49d5867819ab7c744852b45509e8469839c07e0e"
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                "name": "https://git.kernel.org/stable/c/95f1847a361c7b4bf7d74c06ecb6968455082c1a"
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                "name": "https://git.kernel.org/stable/c/ad528fde0702903208d0a79d88d5a42ae3fc235b"
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                "name": "https://git.kernel.org/stable/c/9fdc79b571434af7bc742da40a3405f038b637a7"
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                "name": "https://git.kernel.org/stable/c/f3fe6817156a2ad4b06f01afab04638a34d7c9a6"
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                "name": "https://git.kernel.org/stable/c/19a78143961a197de8502f4f29c453b913dc3c29"
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                "name": "https://git.kernel.org/stable/c/5550bbf709c323194881737fd290c4bada9e6ead"
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                "refsource": "MISC",
                "name": "https://git.kernel.org/stable/c/bcd70260ef56e0aee8a4fc6cd214a419900b0765"
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