{
    "data_version": "4.0",
    "data_type": "CVE",
    "data_format": "MITRE",
    "CVE_data_meta": {
        "ID": "CVE-2022-48645",
        "ASSIGNER": "cve@kernel.org",
        "STATE": "PUBLIC"
    },
    "description": {
        "description_data": [
            {
                "lang": "eng",
                "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nnet: enetc: deny offload of tc-based TSN features on VF interfaces\n\nTSN features on the ENETC (taprio, cbs, gate, police) are configured\nthrough a mix of command BD ring messages and port registers:\nenetc_port_rd(), enetc_port_wr().\n\nPort registers are a region of the ENETC memory map which are only\naccessible from the PCIe Physical Function. They are not accessible from\nthe Virtual Functions.\n\nMoreover, attempting to access these registers crashes the kernel:\n\n$ echo 1 > /sys/bus/pci/devices/0000\\:00\\:00.0/sriov_numvfs\npci 0000:00:01.0: [1957:ef00] type 00 class 0x020001\nfsl_enetc_vf 0000:00:01.0: Adding to iommu group 15\nfsl_enetc_vf 0000:00:01.0: enabling device (0000 -> 0002)\nfsl_enetc_vf 0000:00:01.0 eno0vf0: renamed from eth0\n$ tc qdisc replace dev eno0vf0 root taprio num_tc 8 map 0 1 2 3 4 5 6 7 \\\n\tqueues 1@0 1@1 1@2 1@3 1@4 1@5 1@6 1@7 base-time 0 \\\n\tsched-entry S 0x7f 900000 sched-entry S 0x80 100000 flags 0x2\nUnable to handle kernel paging request at virtual address ffff800009551a08\nInternal error: Oops: 96000007 [#1] PREEMPT SMP\npc : enetc_setup_tc_taprio+0x170/0x47c\nlr : enetc_setup_tc_taprio+0x16c/0x47c\nCall trace:\n enetc_setup_tc_taprio+0x170/0x47c\n enetc_setup_tc+0x38/0x2dc\n taprio_change+0x43c/0x970\n taprio_init+0x188/0x1e0\n qdisc_create+0x114/0x470\n tc_modify_qdisc+0x1fc/0x6c0\n rtnetlink_rcv_msg+0x12c/0x390\n\nSplit enetc_setup_tc() into separate functions for the PF and for the\nVF drivers. Also remove enetc_qos.o from being included into\nenetc-vf.ko, since it serves absolutely no purpose there."
            }
        ]
    },
    "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": "34c6adf1977b",
                                            "version_value": "510e703e4ed0"
                                        },
                                        {
                                            "version_value": "not down converted",
                                            "x_cve_json_5_version_data": {
                                                "versions": [
                                                    {
                                                        "version": "5.5",
                                                        "status": "affected"
                                                    },
                                                    {
                                                        "version": "0",
                                                        "lessThan": "5.5",
                                                        "status": "unaffected",
                                                        "versionType": "custom"
                                                    },
                                                    {
                                                        "version": "5.15.71",
                                                        "lessThanOrEqual": "5.15.*",
                                                        "status": "unaffected",
                                                        "versionType": "custom"
                                                    },
                                                    {
                                                        "version": "5.19.12",
                                                        "lessThanOrEqual": "5.19.*",
                                                        "status": "unaffected",
                                                        "versionType": "custom"
                                                    },
                                                    {
                                                        "version": "6.0",
                                                        "lessThanOrEqual": "*",
                                                        "status": "unaffected",
                                                        "versionType": "original_commit_for_fix"
                                                    }
                                                ],
                                                "defaultStatus": "affected"
                                            }
                                        }
                                    ]
                                }
                            }
                        ]
                    }
                }
            ]
        }
    },
    "references": {
        "reference_data": [
            {
                "url": "https://git.kernel.org/stable/c/510e703e4ed0e011db860bc21228aff48fc9eea7",
                "refsource": "MISC",
                "name": "https://git.kernel.org/stable/c/510e703e4ed0e011db860bc21228aff48fc9eea7"
            },
            {
                "url": "https://git.kernel.org/stable/c/23022b74b1a23bed044f6bc96cf92f6ca5f3e75f",
                "refsource": "MISC",
                "name": "https://git.kernel.org/stable/c/23022b74b1a23bed044f6bc96cf92f6ca5f3e75f"
            },
            {
                "url": "https://git.kernel.org/stable/c/5641c751fe2f92d3d9e8a8e03c1263ac8caa0b42",
                "refsource": "MISC",
                "name": "https://git.kernel.org/stable/c/5641c751fe2f92d3d9e8a8e03c1263ac8caa0b42"
            }
        ]
    },
    "generator": {
        "engine": "bippy-a5840b7849dd"
    }
}