{
    "data_version": "4.0",
    "data_type": "CVE",
    "data_format": "MITRE",
    "CVE_data_meta": {
        "ID": "CVE-2024-36489",
        "ASSIGNER": "cve@kernel.org",
        "STATE": "PUBLIC"
    },
    "description": {
        "description_data": [
            {
                "lang": "eng",
                "value": "In the Linux kernel, the following vulnerability has been resolved:\n\ntls: fix missing memory barrier in tls_init\n\nIn tls_init(), a write memory barrier is missing, and store-store\nreordering may cause NULL dereference in tls_{setsockopt,getsockopt}.\n\nCPU0                               CPU1\n-----                              -----\n// In tls_init()\n// In tls_ctx_create()\nctx = kzalloc()\nctx->sk_proto = READ_ONCE(sk->sk_prot) -(1)\n\n// In update_sk_prot()\nWRITE_ONCE(sk->sk_prot, tls_prots)     -(2)\n\n                                   // In sock_common_setsockopt()\n                                   READ_ONCE(sk->sk_prot)->setsockopt()\n\n                                   // In tls_{setsockopt,getsockopt}()\n                                   ctx->sk_proto->setsockopt()    -(3)\n\nIn the above scenario, when (1) and (2) are reordered, (3) can observe\nthe NULL value of ctx->sk_proto, causing NULL dereference.\n\nTo fix it, we rely on rcu_assign_pointer() which implies the release\nbarrier semantic. By moving rcu_assign_pointer() after ctx->sk_proto is\ninitialized, we can ensure that ctx->sk_proto are visible when\nchanging sk->sk_prot."
            }
        ]
    },
    "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": "d5bee7374b68",
                                            "version_value": "d72e126e9a36"
                                        },
                                        {
                                            "version_value": "not down converted",
                                            "x_cve_json_5_version_data": {
                                                "versions": [
                                                    {
                                                        "version": "5.7",
                                                        "status": "affected"
                                                    },
                                                    {
                                                        "version": "0",
                                                        "lessThan": "5.7",
                                                        "status": "unaffected",
                                                        "versionType": "semver"
                                                    },
                                                    {
                                                        "version": "5.10.219",
                                                        "lessThanOrEqual": "5.10.*",
                                                        "status": "unaffected",
                                                        "versionType": "semver"
                                                    },
                                                    {
                                                        "version": "5.15.161",
                                                        "lessThanOrEqual": "5.15.*",
                                                        "status": "unaffected",
                                                        "versionType": "semver"
                                                    },
                                                    {
                                                        "version": "6.1.93",
                                                        "lessThanOrEqual": "6.1.*",
                                                        "status": "unaffected",
                                                        "versionType": "semver"
                                                    },
                                                    {
                                                        "version": "6.6.33",
                                                        "lessThanOrEqual": "6.6.*",
                                                        "status": "unaffected",
                                                        "versionType": "semver"
                                                    },
                                                    {
                                                        "version": "6.9.4",
                                                        "lessThanOrEqual": "6.9.*",
                                                        "status": "unaffected",
                                                        "versionType": "semver"
                                                    },
                                                    {
                                                        "version": "6.10",
                                                        "lessThanOrEqual": "*",
                                                        "status": "unaffected",
                                                        "versionType": "original_commit_for_fix"
                                                    }
                                                ],
                                                "defaultStatus": "affected"
                                            }
                                        }
                                    ]
                                }
                            }
                        ]
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                }
            ]
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    "references": {
        "reference_data": [
            {
                "url": "https://git.kernel.org/stable/c/d72e126e9a36d3d33889829df8fc90100bb0e071",
                "refsource": "MISC",
                "name": "https://git.kernel.org/stable/c/d72e126e9a36d3d33889829df8fc90100bb0e071"
            },
            {
                "url": "https://git.kernel.org/stable/c/2c260a24cf1c4d30ea3646124f766ee46169280b",
                "refsource": "MISC",
                "name": "https://git.kernel.org/stable/c/2c260a24cf1c4d30ea3646124f766ee46169280b"
            },
            {
                "url": "https://git.kernel.org/stable/c/335c8f1566d8e44c384d16b450a18554896d4e8b",
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                "name": "https://git.kernel.org/stable/c/335c8f1566d8e44c384d16b450a18554896d4e8b"
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            {
                "url": "https://git.kernel.org/stable/c/ab67c2fd3d070a21914d0c31319d3858ab4e199c",
                "refsource": "MISC",
                "name": "https://git.kernel.org/stable/c/ab67c2fd3d070a21914d0c31319d3858ab4e199c"
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            {
                "url": "https://git.kernel.org/stable/c/ef21007a7b581c7fe64d5a10c320880a033c837b",
                "refsource": "MISC",
                "name": "https://git.kernel.org/stable/c/ef21007a7b581c7fe64d5a10c320880a033c837b"
            },
            {
                "url": "https://git.kernel.org/stable/c/91e61dd7a0af660408e87372d8330ceb218be302",
                "refsource": "MISC",
                "name": "https://git.kernel.org/stable/c/91e61dd7a0af660408e87372d8330ceb218be302"
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