{
    "dataType": "CVE_RECORD",
    "dataVersion": "5.1",
    "cveMetadata": {
        "cveId": "CVE-2021-47463",
        "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "state": "PUBLISHED",
        "assignerShortName": "Linux",
        "dateReserved": "2024-05-22T06:20:56.198Z",
        "datePublished": "2024-05-22T06:23:23.688Z",
        "dateUpdated": "2024-08-04T05:39:59.505Z"
    },
    "containers": {
        "cna": {
            "providerMetadata": {
                "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
                "shortName": "Linux",
                "dateUpdated": "2024-05-29T05:08:22.765Z"
            },
            "descriptions": [
                {
                    "lang": "en",
                    "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nmm/secretmem: fix NULL page->mapping dereference in page_is_secretmem()\n\nCheck for a NULL page->mapping before dereferencing the mapping in\npage_is_secretmem(), as the page's mapping can be nullified while gup()\nis running, e.g.  by reclaim or truncation.\n\n  BUG: kernel NULL pointer dereference, address: 0000000000000068\n  #PF: supervisor read access in kernel mode\n  #PF: error_code(0x0000) - not-present page\n  PGD 0 P4D 0\n  Oops: 0000 [#1] PREEMPT SMP NOPTI\n  CPU: 6 PID: 4173897 Comm: CPU 3/KVM Tainted: G        W\n  RIP: 0010:internal_get_user_pages_fast+0x621/0x9d0\n  Code: <48> 81 7a 68 80 08 04 bc 0f 85 21 ff ff 8 89 c7 be\n  RSP: 0018:ffffaa90087679b0 EFLAGS: 00010046\n  RAX: ffffe3f37905b900 RBX: 00007f2dd561e000 RCX: ffffe3f37905b934\n  RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffffe3f37905b900\n  ...\n  CR2: 0000000000000068 CR3: 00000004c5898003 CR4: 00000000001726e0\n  Call Trace:\n   get_user_pages_fast_only+0x13/0x20\n   hva_to_pfn+0xa9/0x3e0\n   try_async_pf+0xa1/0x270\n   direct_page_fault+0x113/0xad0\n   kvm_mmu_page_fault+0x69/0x680\n   vmx_handle_exit+0xe1/0x5d0\n   kvm_arch_vcpu_ioctl_run+0xd81/0x1c70\n   kvm_vcpu_ioctl+0x267/0x670\n   __x64_sys_ioctl+0x83/0xa0\n   do_syscall_64+0x56/0x80\n   entry_SYSCALL_64_after_hwframe+0x44/0xae"
                }
            ],
            "affected": [
                {
                    "product": "Linux",
                    "vendor": "Linux",
                    "defaultStatus": "unaffected",
                    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
                    "programFiles": [
                        "include/linux/secretmem.h"
                    ],
                    "versions": [
                        {
                            "version": "1507f51255c9",
                            "lessThan": "b77ba1e02345",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "1507f51255c9",
                            "lessThan": "79f9bc584314",
                            "status": "affected",
                            "versionType": "git"
                        }
                    ]
                },
                {
                    "product": "Linux",
                    "vendor": "Linux",
                    "defaultStatus": "affected",
                    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
                    "programFiles": [
                        "include/linux/secretmem.h"
                    ],
                    "versions": [
                        {
                            "version": "5.14",
                            "status": "affected"
                        },
                        {
                            "version": "0",
                            "lessThan": "5.14",
                            "status": "unaffected",
                            "versionType": "custom"
                        },
                        {
                            "version": "5.14.15",
                            "lessThanOrEqual": "5.14.*",
                            "status": "unaffected",
                            "versionType": "custom"
                        },
                        {
                            "version": "5.15",
                            "lessThanOrEqual": "*",
                            "status": "unaffected",
                            "versionType": "original_commit_for_fix"
                        }
                    ]
                }
            ],
            "references": [
                {
                    "url": "https://git.kernel.org/stable/c/b77ba1e02345bafd703f0d407bdbd88c3be1f767"
                },
                {
                    "url": "https://git.kernel.org/stable/c/79f9bc5843142b649575f887dccdf1c07ad75c20"
                }
            ],
            "title": "mm/secretmem: fix NULL page->mapping dereference in page_is_secretmem()",
            "x_generator": {
                "engine": "bippy-a5840b7849dd"
            }
        },
        "adp": [
            {
                "title": "CISA ADP Vulnrichment",
                "metrics": [
                    {
                        "other": {
                            "type": "ssvc",
                            "content": {
                                "id": "CVE-2021-47463",
                                "role": "CISA Coordinator",
                                "options": [
                                    {
                                        "Exploitation": "none"
                                    },
                                    {
                                        "Automatable": "no"
                                    },
                                    {
                                        "Technical Impact": "partial"
                                    }
                                ],
                                "version": "2.0.3",
                                "timestamp": "2024-05-22T17:54:35.234529Z"
                            }
                        }
                    }
                ],
                "providerMetadata": {
                    "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
                    "shortName": "CISA-ADP",
                    "dateUpdated": "2024-06-04T17:13:47.455Z"
                }
            },
            {
                "providerMetadata": {
                    "orgId": "af854a3a-2127-422b-91ae-364da2661108",
                    "shortName": "CVE",
                    "dateUpdated": "2024-08-04T05:39:59.505Z"
                },
                "title": "CVE Program Container",
                "references": [
                    {
                        "url": "https://git.kernel.org/stable/c/b77ba1e02345bafd703f0d407bdbd88c3be1f767",
                        "tags": [
                            "x_transferred"
                        ]
                    },
                    {
                        "url": "https://git.kernel.org/stable/c/79f9bc5843142b649575f887dccdf1c07ad75c20",
                        "tags": [
                            "x_transferred"
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                ]
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    }
}