cvelist/2021/47xxx/CVE-2021-47015.json

{
    "data_version": "4.0",
    "data_type": "CVE",
    "data_format": "MITRE",
    "CVE_data_meta": {
        "ID": "CVE-2021-47015",
        "ASSIGNER": "cve@kernel.org",
        "STATE": "PUBLIC"
    },
    "description": {
        "description_data": [
            {
                "lang": "eng",
                "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nbnxt_en: Fix RX consumer index logic in the error path.\n\nIn bnxt_rx_pkt(), the RX buffers are expected to complete in order.\nIf the RX consumer index indicates an out of order buffer completion,\nit means we are hitting a hardware bug and the driver will abort all\nremaining RX packets and reset the RX ring.  The RX consumer index\nthat we pass to bnxt_discard_rx() is not correct.  We should be\npassing the current index (tmp_raw_cons) instead of the old index\n(raw_cons).  This bug can cause us to be at the wrong index when\ntrying to abort the next RX packet.  It can crash like this:\n\n #0 [ffff9bbcdf5c39a8] machine_kexec at ffffffff9b05e007\n #1 [ffff9bbcdf5c3a00] __crash_kexec at ffffffff9b111232\n #2 [ffff9bbcdf5c3ad0] panic at ffffffff9b07d61e\n #3 [ffff9bbcdf5c3b50] oops_end at ffffffff9b030978\n #4 [ffff9bbcdf5c3b78] no_context at ffffffff9b06aaf0\n #5 [ffff9bbcdf5c3bd8] __bad_area_nosemaphore at ffffffff9b06ae2e\n #6 [ffff9bbcdf5c3c28] bad_area_nosemaphore at ffffffff9b06af24\n #7 [ffff9bbcdf5c3c38] __do_page_fault at ffffffff9b06b67e\n #8 [ffff9bbcdf5c3cb0] do_page_fault at ffffffff9b06bb12\n #9 [ffff9bbcdf5c3ce0] page_fault at ffffffff9bc015c5\n    [exception RIP: bnxt_rx_pkt+237]\n    RIP: ffffffffc0259cdd  RSP: ffff9bbcdf5c3d98  RFLAGS: 00010213\n    RAX: 000000005dd8097f  RBX: ffff9ba4cb11b7e0  RCX: ffffa923cf6e9000\n    RDX: 0000000000000fff  RSI: 0000000000000627  RDI: 0000000000001000\n    RBP: ffff9bbcdf5c3e60   R8: 0000000000420003   R9: 000000000000020d\n    R10: ffffa923cf6ec138  R11: ffff9bbcdf5c3e83  R12: ffff9ba4d6f928c0\n    R13: ffff9ba4cac28080  R14: ffff9ba4cb11b7f0  R15: ffff9ba4d5a30000\n    ORIG_RAX: ffffffffffffffff  CS: 0010  SS: 0018"
            }
        ]
    },
    "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": "a1b0e4e684e9",
                                            "version_value": "b1523e4ba293"
                                        },
                                        {
                                            "version_value": "not down converted",
                                            "x_cve_json_5_version_data": {
                                                "versions": [
                                                    {
                                                        "version": "5.1",
                                                        "status": "affected"
                                                    },
                                                    {
                                                        "version": "0",
                                                        "lessThan": "5.1",
                                                        "status": "unaffected",
                                                        "versionType": "semver"
                                                    },
                                                    {
                                                        "version": "5.4.119",
                                                        "lessThanOrEqual": "5.4.*",
                                                        "status": "unaffected",
                                                        "versionType": "semver"
                                                    },
                                                    {
                                                        "version": "5.10.37",
                                                        "lessThanOrEqual": "5.10.*",
                                                        "status": "unaffected",
                                                        "versionType": "semver"
                                                    },
                                                    {
                                                        "version": "5.11.21",
                                                        "lessThanOrEqual": "5.11.*",
                                                        "status": "unaffected",
                                                        "versionType": "semver"
                                                    },
                                                    {
                                                        "version": "5.12.4",
                                                        "lessThanOrEqual": "5.12.*",
                                                        "status": "unaffected",
                                                        "versionType": "semver"
                                                    },
                                                    {
                                                        "version": "5.13",
                                                        "lessThanOrEqual": "*",
                                                        "status": "unaffected",
                                                        "versionType": "original_commit_for_fix"
                                                    }
                                                ],
                                                "defaultStatus": "affected"
                                            }
                                        }
                                    ]
                                }
                            }
                        ]
                    }
                }
            ]
        }
    },
    "references": {
        "reference_data": [
            {
                "url": "https://git.kernel.org/stable/c/b1523e4ba293b2a32d9fabaf70c1dcaa6e3e2847",
                "refsource": "MISC",
                "name": "https://git.kernel.org/stable/c/b1523e4ba293b2a32d9fabaf70c1dcaa6e3e2847"
            },
            {
                "url": "https://git.kernel.org/stable/c/4fcaad2b7dac3f16704f8118c7e481024ddbd3ed",
                "refsource": "MISC",
                "name": "https://git.kernel.org/stable/c/4fcaad2b7dac3f16704f8118c7e481024ddbd3ed"
            },
            {
                "url": "https://git.kernel.org/stable/c/e187ef83c04a5d23e68d39cfdff1a1931e29890c",
                "refsource": "MISC",
                "name": "https://git.kernel.org/stable/c/e187ef83c04a5d23e68d39cfdff1a1931e29890c"
            },
            {
                "url": "https://git.kernel.org/stable/c/3fbc5bc651d688fbea2a59cdc91520a2f5334d0a",
                "refsource": "MISC",
                "name": "https://git.kernel.org/stable/c/3fbc5bc651d688fbea2a59cdc91520a2f5334d0a"
            },
            {
                "url": "https://git.kernel.org/stable/c/bbd6f0a948139970f4a615dff189d9a503681a39",
                "refsource": "MISC",
                "name": "https://git.kernel.org/stable/c/bbd6f0a948139970f4a615dff189d9a503681a39"
            }
        ]
    },
    "generator": {
        "engine": "bippy-9e1c9544281a"
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}