{
    "data_version": "4.0",
    "data_type": "CVE",
    "data_format": "MITRE",
    "CVE_data_meta": {
        "ID": "CVE-2024-46689",
        "ASSIGNER": "cve@kernel.org",
        "STATE": "PUBLIC"
    },
    "description": {
        "description_data": [
            {
                "lang": "eng",
                "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nsoc: qcom: cmd-db: Map shared memory as WC, not WB\n\nLinux does not write into cmd-db region. This region of memory is write\nprotected by XPU. XPU may sometime falsely detect clean cache eviction\nas \"write\" into the write protected region leading to secure interrupt\nwhich causes an endless loop somewhere in Trust Zone.\n\nThe only reason it is working right now is because Qualcomm Hypervisor\nmaps the same region as Non-Cacheable memory in Stage 2 translation\ntables. The issue manifests if we want to use another hypervisor (like\nXen or KVM), which does not know anything about those specific mappings.\n\nChanging the mapping of cmd-db memory from MEMREMAP_WB to MEMREMAP_WT/WC\nremoves dependency on correct mappings in Stage 2 tables. This patch\nfixes the issue by updating the mapping to MEMREMAP_WC.\n\nI tested this on SA8155P with Xen."
            }
        ]
    },
    "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": "312416d9171a",
                                            "version_value": "0ee9594c9743"
                                        },
                                        {
                                            "version_value": "not down converted",
                                            "x_cve_json_5_version_data": {
                                                "versions": [
                                                    {
                                                        "version": "4.18",
                                                        "status": "affected"
                                                    },
                                                    {
                                                        "version": "0",
                                                        "lessThan": "4.18",
                                                        "status": "unaffected",
                                                        "versionType": "custom"
                                                    },
                                                    {
                                                        "version": "5.4.283",
                                                        "lessThanOrEqual": "5.4.*",
                                                        "status": "unaffected",
                                                        "versionType": "custom"
                                                    },
                                                    {
                                                        "version": "5.10.225",
                                                        "lessThanOrEqual": "5.10.*",
                                                        "status": "unaffected",
                                                        "versionType": "custom"
                                                    },
                                                    {
                                                        "version": "5.15.166",
                                                        "lessThanOrEqual": "5.15.*",
                                                        "status": "unaffected",
                                                        "versionType": "custom"
                                                    },
                                                    {
                                                        "version": "6.1.108",
                                                        "lessThanOrEqual": "6.1.*",
                                                        "status": "unaffected",
                                                        "versionType": "custom"
                                                    },
                                                    {
                                                        "version": "6.6.49",
                                                        "lessThanOrEqual": "6.6.*",
                                                        "status": "unaffected",
                                                        "versionType": "custom"
                                                    },
                                                    {
                                                        "version": "6.10.8",
                                                        "lessThanOrEqual": "6.10.*",
                                                        "status": "unaffected",
                                                        "versionType": "custom"
                                                    },
                                                    {
                                                        "version": "6.11",
                                                        "lessThanOrEqual": "*",
                                                        "status": "unaffected",
                                                        "versionType": "original_commit_for_fix"
                                                    }
                                                ],
                                                "defaultStatus": "affected"
                                            }
                                        }
                                    ]
                                }
                            }
                        ]
                    }
                }
            ]
        }
    },
    "references": {
        "reference_data": [
            {
                "url": "https://git.kernel.org/stable/c/0ee9594c974368a17e85a431e9fe1c14fb65c278",
                "refsource": "MISC",
                "name": "https://git.kernel.org/stable/c/0ee9594c974368a17e85a431e9fe1c14fb65c278"
            },
            {
                "url": "https://git.kernel.org/stable/c/f5a5a5a0e95f36e2792d48e6e4b64e665eb01374",
                "refsource": "MISC",
                "name": "https://git.kernel.org/stable/c/f5a5a5a0e95f36e2792d48e6e4b64e665eb01374"
            },
            {
                "url": "https://git.kernel.org/stable/c/eaff392c1e34fb77cc61505a31b0191e5e46e271",
                "refsource": "MISC",
                "name": "https://git.kernel.org/stable/c/eaff392c1e34fb77cc61505a31b0191e5e46e271"
            },
            {
                "url": "https://git.kernel.org/stable/c/d9d48d70e922b272875cda60d2ada89291c840cf",
                "refsource": "MISC",
                "name": "https://git.kernel.org/stable/c/d9d48d70e922b272875cda60d2ada89291c840cf"
            },
            {
                "url": "https://git.kernel.org/stable/c/ef80520be0ff78ae5ed44cb6eee1525e65bebe70",
                "refsource": "MISC",
                "name": "https://git.kernel.org/stable/c/ef80520be0ff78ae5ed44cb6eee1525e65bebe70"
            },
            {
                "url": "https://git.kernel.org/stable/c/62c2d63605ca25b5db78a347ed303c0a0a77d5b4",
                "refsource": "MISC",
                "name": "https://git.kernel.org/stable/c/62c2d63605ca25b5db78a347ed303c0a0a77d5b4"
            },
            {
                "url": "https://git.kernel.org/stable/c/f9bb896eab221618927ae6a2f1d566567999839d",
                "refsource": "MISC",
                "name": "https://git.kernel.org/stable/c/f9bb896eab221618927ae6a2f1d566567999839d"
            }
        ]
    },
    "generator": {
        "engine": "bippy-c9c4e1df01b2"
    }
}