{
    "data_version": "4.0",
    "data_type": "CVE",
    "data_format": "MITRE",
    "CVE_data_meta": {
        "ID": "CVE-2021-46956",
        "ASSIGNER": "cve@kernel.org",
        "STATE": "PUBLIC"
    },
    "description": {
        "description_data": [
            {
                "lang": "eng",
                "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nvirtiofs: fix memory leak in virtio_fs_probe()\n\nWhen accidentally passing twice the same tag to qemu, kmemleak ended up\nreporting a memory leak in virtiofs.  Also, looking at the log I saw the\nfollowing error (that's when I realised the duplicated tag):\n\n  virtiofs: probe of virtio5 failed with error -17\n\nHere's the kmemleak log for reference:\n\nunreferenced object 0xffff888103d47800 (size 1024):\n  comm \"systemd-udevd\", pid 118, jiffies 4294893780 (age 18.340s)\n  hex dump (first 32 bytes):\n    00 00 00 00 ad 4e ad de ff ff ff ff 00 00 00 00  .....N..........\n    ff ff ff ff ff ff ff ff 80 90 02 a0 ff ff ff ff  ................\n  backtrace:\n    [<000000000ebb87c1>] virtio_fs_probe+0x171/0x7ae [virtiofs]\n    [<00000000f8aca419>] virtio_dev_probe+0x15f/0x210\n    [<000000004d6baf3c>] really_probe+0xea/0x430\n    [<00000000a6ceeac8>] device_driver_attach+0xa8/0xb0\n    [<00000000196f47a7>] __driver_attach+0x98/0x140\n    [<000000000b20601d>] bus_for_each_dev+0x7b/0xc0\n    [<00000000399c7b7f>] bus_add_driver+0x11b/0x1f0\n    [<0000000032b09ba7>] driver_register+0x8f/0xe0\n    [<00000000cdd55998>] 0xffffffffa002c013\n    [<000000000ea196a2>] do_one_initcall+0x64/0x2e0\n    [<0000000008f727ce>] do_init_module+0x5c/0x260\n    [<000000003cdedab6>] __do_sys_finit_module+0xb5/0x120\n    [<00000000ad2f48c6>] do_syscall_64+0x33/0x40\n    [<00000000809526b5>] entry_SYSCALL_64_after_hwframe+0x44/0xae"
            }
        ]
    },
    "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": "a62a8ef9d97d",
                                            "version_value": "310efc95c72c"
                                        },
                                        {
                                            "version_value": "not down converted",
                                            "x_cve_json_5_version_data": {
                                                "versions": [
                                                    {
                                                        "version": "5.4",
                                                        "status": "affected"
                                                    },
                                                    {
                                                        "version": "0",
                                                        "lessThan": "5.4",
                                                        "status": "unaffected",
                                                        "versionType": "custom"
                                                    },
                                                    {
                                                        "version": "5.4.118",
                                                        "lessThanOrEqual": "5.4.*",
                                                        "status": "unaffected",
                                                        "versionType": "custom"
                                                    },
                                                    {
                                                        "version": "5.10.36",
                                                        "lessThanOrEqual": "5.10.*",
                                                        "status": "unaffected",
                                                        "versionType": "custom"
                                                    },
                                                    {
                                                        "version": "5.11.20",
                                                        "lessThanOrEqual": "5.11.*",
                                                        "status": "unaffected",
                                                        "versionType": "custom"
                                                    },
                                                    {
                                                        "version": "5.12.3",
                                                        "lessThanOrEqual": "5.12.*",
                                                        "status": "unaffected",
                                                        "versionType": "custom"
                                                    },
                                                    {
                                                        "version": "5.13",
                                                        "lessThanOrEqual": "*",
                                                        "status": "unaffected",
                                                        "versionType": "original_commit_for_fix"
                                                    }
                                                ],
                                                "defaultStatus": "affected"
                                            }
                                        }
                                    ]
                                }
                            }
                        ]
                    }
                }
            ]
        }
    },
    "references": {
        "reference_data": [
            {
                "url": "https://git.kernel.org/stable/c/310efc95c72c13faf855c692d19cd4d054d827c8",
                "refsource": "MISC",
                "name": "https://git.kernel.org/stable/c/310efc95c72c13faf855c692d19cd4d054d827c8"
            },
            {
                "url": "https://git.kernel.org/stable/c/d19555ff225d0896a33246a49279e6d578095f15",
                "refsource": "MISC",
                "name": "https://git.kernel.org/stable/c/d19555ff225d0896a33246a49279e6d578095f15"
            },
            {
                "url": "https://git.kernel.org/stable/c/9b9d60c0eb8ada99cce2a9ab5c15dffc523b01ae",
                "refsource": "MISC",
                "name": "https://git.kernel.org/stable/c/9b9d60c0eb8ada99cce2a9ab5c15dffc523b01ae"
            },
            {
                "url": "https://git.kernel.org/stable/c/5116e79fc6e6725b8acdad8b7e928a83ab7b47e6",
                "refsource": "MISC",
                "name": "https://git.kernel.org/stable/c/5116e79fc6e6725b8acdad8b7e928a83ab7b47e6"
            },
            {
                "url": "https://git.kernel.org/stable/c/c79c5e0178922a9e092ec8fed026750f39dcaef4",
                "refsource": "MISC",
                "name": "https://git.kernel.org/stable/c/c79c5e0178922a9e092ec8fed026750f39dcaef4"
            }
        ]
    },
    "generator": {
        "engine": "bippy-a5840b7849dd"
    }
}