{
    "data_version": "4.0",
    "data_type": "CVE",
    "data_format": "MITRE",
    "CVE_data_meta": {
        "ID": "CVE-2021-47619",
        "ASSIGNER": "cve@kernel.org",
        "STATE": "PUBLIC"
    },
    "description": {
        "description_data": [
            {
                "lang": "eng",
                "value": "In the Linux kernel, the following vulnerability has been resolved:\n\ni40e: Fix queues reservation for XDP\n\nWhen XDP was configured on a system with large number of CPUs\nand X722 NIC there was a call trace with NULL pointer dereference.\n\ni40e 0000:87:00.0: failed to get tracking for 256 queues for VSI 0 err -12\ni40e 0000:87:00.0: setup of MAIN VSI failed\n\nBUG: kernel NULL pointer dereference, address: 0000000000000000\nRIP: 0010:i40e_xdp+0xea/0x1b0 [i40e]\nCall Trace:\n? i40e_reconfig_rss_queues+0x130/0x130 [i40e]\ndev_xdp_install+0x61/0xe0\ndev_xdp_attach+0x18a/0x4c0\ndev_change_xdp_fd+0x1e6/0x220\ndo_setlink+0x616/0x1030\n? ahci_port_stop+0x80/0x80\n? ata_qc_issue+0x107/0x1e0\n? lock_timer_base+0x61/0x80\n? __mod_timer+0x202/0x380\nrtnl_setlink+0xe5/0x170\n? bpf_lsm_binder_transaction+0x10/0x10\n? security_capable+0x36/0x50\nrtnetlink_rcv_msg+0x121/0x350\n? rtnl_calcit.isra.0+0x100/0x100\nnetlink_rcv_skb+0x50/0xf0\nnetlink_unicast+0x1d3/0x2a0\nnetlink_sendmsg+0x22a/0x440\nsock_sendmsg+0x5e/0x60\n__sys_sendto+0xf0/0x160\n? __sys_getsockname+0x7e/0xc0\n? _copy_from_user+0x3c/0x80\n? __sys_setsockopt+0xc8/0x1a0\n__x64_sys_sendto+0x20/0x30\ndo_syscall_64+0x33/0x40\nentry_SYSCALL_64_after_hwframe+0x44/0xae\nRIP: 0033:0x7f83fa7a39e0\n\nThis was caused by PF queue pile fragmentation due to\nflow director VSI queue being placed right after main VSI.\nBecause of this main VSI was not able to resize its\nqueue allocation for XDP resulting in no queues allocated\nfor main VSI when XDP was turned on.\n\nFix this by always allocating last queue in PF queue pile\nfor a flow director VSI."
            }
        ]
    },
    "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": "41c445ff0f48",
                                            "version_value": "d46fa4ea9756"
                                        },
                                        {
                                            "version_value": "not down converted",
                                            "x_cve_json_5_version_data": {
                                                "versions": [
                                                    {
                                                        "version": "3.12",
                                                        "status": "affected"
                                                    },
                                                    {
                                                        "version": "0",
                                                        "lessThan": "3.12",
                                                        "status": "unaffected",
                                                        "versionType": "custom"
                                                    },
                                                    {
                                                        "version": "4.19.228",
                                                        "lessThanOrEqual": "4.19.*",
                                                        "status": "unaffected",
                                                        "versionType": "custom"
                                                    },
                                                    {
                                                        "version": "5.4.176",
                                                        "lessThanOrEqual": "5.4.*",
                                                        "status": "unaffected",
                                                        "versionType": "custom"
                                                    },
                                                    {
                                                        "version": "5.10.96",
                                                        "lessThanOrEqual": "5.10.*",
                                                        "status": "unaffected",
                                                        "versionType": "custom"
                                                    },
                                                    {
                                                        "version": "5.15.19",
                                                        "lessThanOrEqual": "5.15.*",
                                                        "status": "unaffected",
                                                        "versionType": "custom"
                                                    },
                                                    {
                                                        "version": "5.16.5",
                                                        "lessThanOrEqual": "5.16.*",
                                                        "status": "unaffected",
                                                        "versionType": "custom"
                                                    },
                                                    {
                                                        "version": "5.17",
                                                        "lessThanOrEqual": "*",
                                                        "status": "unaffected",
                                                        "versionType": "original_commit_for_fix"
                                                    }
                                                ],
                                                "defaultStatus": "affected"
                                            }
                                        }
                                    ]
                                }
                            }
                        ]
                    }
                }
            ]
        }
    },
    "references": {
        "reference_data": [
            {
                "url": "https://git.kernel.org/stable/c/d46fa4ea9756ef6cbcf9752d0832cc66e2d7121b",
                "refsource": "MISC",
                "name": "https://git.kernel.org/stable/c/d46fa4ea9756ef6cbcf9752d0832cc66e2d7121b"
            },
            {
                "url": "https://git.kernel.org/stable/c/be6998f232b8e4ca8225029e305b8329d89bfd59",
                "refsource": "MISC",
                "name": "https://git.kernel.org/stable/c/be6998f232b8e4ca8225029e305b8329d89bfd59"
            },
            {
                "url": "https://git.kernel.org/stable/c/768eb705e6381f0c70ca29d4e66f19790d5d19a1",
                "refsource": "MISC",
                "name": "https://git.kernel.org/stable/c/768eb705e6381f0c70ca29d4e66f19790d5d19a1"
            },
            {
                "url": "https://git.kernel.org/stable/c/00eddb0e4ea115154581d1049507a996acfc2d3e",
                "refsource": "MISC",
                "name": "https://git.kernel.org/stable/c/00eddb0e4ea115154581d1049507a996acfc2d3e"
            },
            {
                "url": "https://git.kernel.org/stable/c/4b3aa858268b7b9aeef02e5f9c4cd8f8fac101c8",
                "refsource": "MISC",
                "name": "https://git.kernel.org/stable/c/4b3aa858268b7b9aeef02e5f9c4cd8f8fac101c8"
            },
            {
                "url": "https://git.kernel.org/stable/c/92947844b8beee988c0ce17082b705c2f75f0742",
                "refsource": "MISC",
                "name": "https://git.kernel.org/stable/c/92947844b8beee988c0ce17082b705c2f75f0742"
            }
        ]
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    "generator": {
        "engine": "bippy-7d53e8ef8be4"
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}