{
    "dataType": "CVE_RECORD",
    "dataVersion": "5.2",
    "cveMetadata": {
        "cveId": "CVE-2024-46792",
        "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "state": "PUBLISHED",
        "assignerShortName": "Linux",
        "dateReserved": "2024-09-11T15:12:18.279Z",
        "datePublished": "2024-09-18T07:12:47.455Z",
        "dateUpdated": "2026-08-05T11:38:35.301Z"
    },
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                "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
                "shortName": "Linux",
                "dateUpdated": "2026-08-05T11:38:35.301Z"
            },
            "descriptions": [
                {
                    "lang": "en",
                    "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nriscv: misaligned: Restrict user access to kernel memory\n\nraw_copy_{to,from}_user() do not call access_ok(), so this code allowed\nuserspace to access any virtual memory address."
                }
            ],
            "metrics": [
                {
                    "cvssV3_1": {
                        "version": "3.1",
                        "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
                        "baseScore": 7.8,
                        "baseSeverity": "HIGH"
                    },
                    "scenarios": [
                        {
                            "lang": "en",
                            "value": "AV:L - Exploitation requires executing an instruction on the target machine, i.e. any local unprivileged process on a RISC-V system; there is no remote or adjacent-network reachability.\nAC:L - The attacker fully controls both the target address (regs->badaddr) and the stored data (rs2), the emulation path is enabled in the default RISC-V config, and faults are swallowed by the extable — so the read/write is deterministic and repeatable with no race or memory-layout dependency.\nPR:L - Any unprivileged local user can trigger it by executing a single misaligned load/store; no capabilities, namespaces, or syscalls are needed at all.\nUI:N - The attacking process triggers the trap entirely on its own; no victim action is involved.\nS:U - Impact is confined to the kernel's own security authority — this is standard local kernel compromise/privilege escalation, not a hypervisor or IOMMU boundary crossing.\nC:H - handle_misaligned_load() copies 8 bytes from any attacker-chosen kernel address straight into a user register, giving a repeatable arbitrary kernel-memory read over the entire address space including the direct map.\nI:H - handle_misaligned_store() writes 8 bytes of attacker-controlled data to any kernel address, an arbitrary kernel write primitive that yields credential overwrite and kernel code execution.\nA:H - The same arbitrary write lets an attacker corrupt critical kernel structures or text at will, causing immediate panic or permanent system compromise."
                        }
                    ]
                }
            ],
            "affected": [
                {
                    "product": "Linux",
                    "vendor": "Linux",
                    "defaultStatus": "unaffected",
                    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
                    "programFiles": [
                        "arch/riscv/kernel/traps_misaligned.c"
                    ],
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                            "version": "7c83232161f609bbc452a1255f823f41afc411dd",
                            "lessThan": "a3b6ff6c896aee5ef9b581e40d0045ff04fcbc8c",
                            "status": "affected",
                            "versionType": "git"
                        },
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                            "lessThan": "b686ecdeacf6658e1348c1a32a08e2e72f7c0f00",
                            "status": "affected",
                            "versionType": "git"
                        }
                    ]
                },
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                    "product": "Linux",
                    "vendor": "Linux",
                    "defaultStatus": "affected",
                    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
                    "programFiles": [
                        "arch/riscv/kernel/traps_misaligned.c"
                    ],
                    "versions": [
                        {
                            "version": "6.7",
                            "status": "affected"
                        },
                        {
                            "version": "0",
                            "lessThan": "6.7",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.10.10",
                            "lessThanOrEqual": "6.10.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.11",
                            "lessThanOrEqual": "*",
                            "status": "unaffected",
                            "versionType": "original_commit_for_fix"
                        }
                    ]
                }
            ],
            "cpeApplicability": [
                {
                    "nodes": [
                        {
                            "operator": "OR",
                            "negate": false,
                            "cpeMatch": [
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "6.7",
                                    "versionEndExcluding": "6.10.10"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "6.7",
                                    "versionEndExcluding": "6.11"
                                }
                            ]
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                }
            ],
            "references": [
                {
                    "url": "https://git.kernel.org/stable/c/a3b6ff6c896aee5ef9b581e40d0045ff04fcbc8c"
                },
                {
                    "url": "https://git.kernel.org/stable/c/b686ecdeacf6658e1348c1a32a08e2e72f7c0f00"
                }
            ],
            "title": "riscv: misaligned: Restrict user access to kernel memory",
            "x_generator": {
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        },
        "adp": [
            {
                "metrics": [
                    {
                        "other": {
                            "type": "ssvc",
                            "content": {
                                "timestamp": "2024-09-29T14:23:34.926999Z",
                                "id": "CVE-2024-46792",
                                "options": [
                                    {
                                        "Exploitation": "none"
                                    },
                                    {
                                        "Automatable": "no"
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                                    {
                                        "Technical Impact": "partial"
                                    }
                                ],
                                "role": "CISA Coordinator",
                                "version": "2.0.3"
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                ],
                "title": "CISA ADP Vulnrichment",
                "providerMetadata": {
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                    "dateUpdated": "2024-09-29T14:23:47.441Z"
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}