{
    "dataType": "CVE_RECORD",
    "dataVersion": "5.2",
    "cveMetadata": {
        "cveId": "CVE-2026-31483",
        "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "state": "PUBLISHED",
        "assignerShortName": "Linux",
        "dateReserved": "2026-03-09T15:48:24.101Z",
        "datePublished": "2026-04-22T13:54:09.561Z",
        "dateUpdated": "2026-05-11T22:09:36.271Z"
    },
    "containers": {
        "cna": {
            "providerMetadata": {
                "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
                "shortName": "Linux",
                "dateUpdated": "2026-05-11T22:09:36.271Z"
            },
            "descriptions": [
                {
                    "lang": "en",
                    "value": "In the Linux kernel, the following vulnerability has been resolved:\n\ns390/syscalls: Add spectre boundary for syscall dispatch table\n\nThe s390 syscall number is directly controlled by userspace, but does\nnot have an array_index_nospec() boundary to prevent access past the\nsyscall function pointer tables."
                }
            ],
            "affected": [
                {
                    "product": "Linux",
                    "vendor": "Linux",
                    "defaultStatus": "unaffected",
                    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
                    "programFiles": [
                        "arch/s390/kernel/syscall.c"
                    ],
                    "versions": [
                        {
                            "version": "56e62a73702836017564eaacd5212e4d0fa1c01d",
                            "lessThan": "3c3b97064764899c39a0abbd35a6caa031e70333",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "56e62a73702836017564eaacd5212e4d0fa1c01d",
                            "lessThan": "1cb9c7bc9025c637564fabc7fcc3c9343949e310",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "56e62a73702836017564eaacd5212e4d0fa1c01d",
                            "lessThan": "7a5260fbc6e79a1595328ec5c6aa3f937504a1f0",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "56e62a73702836017564eaacd5212e4d0fa1c01d",
                            "lessThan": "f8c444b918d639e1f9a621ee20fe481c1d10dfc4",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "56e62a73702836017564eaacd5212e4d0fa1c01d",
                            "lessThan": "87776f02449e3bded95b2ccbd6b012e9ae64e6f3",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "56e62a73702836017564eaacd5212e4d0fa1c01d",
                            "lessThan": "4d05dd18d867d58c6952a3bc260d244899da7256",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "56e62a73702836017564eaacd5212e4d0fa1c01d",
                            "lessThan": "48b8814e25d073dd84daf990a879a820bad2bcbd",
                            "status": "affected",
                            "versionType": "git"
                        }
                    ]
                },
                {
                    "product": "Linux",
                    "vendor": "Linux",
                    "defaultStatus": "affected",
                    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
                    "programFiles": [
                        "arch/s390/kernel/syscall.c"
                    ],
                    "versions": [
                        {
                            "version": "5.12",
                            "status": "affected"
                        },
                        {
                            "version": "0",
                            "lessThan": "5.12",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "5.15.203",
                            "lessThanOrEqual": "5.15.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.1.168",
                            "lessThanOrEqual": "6.1.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.6.131",
                            "lessThanOrEqual": "6.6.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.12.80",
                            "lessThanOrEqual": "6.12.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.18.21",
                            "lessThanOrEqual": "6.18.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.19.11",
                            "lessThanOrEqual": "6.19.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "7.0",
                            "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": "5.12",
                                    "versionEndExcluding": "5.15.203"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "5.12",
                                    "versionEndExcluding": "6.1.168"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "5.12",
                                    "versionEndExcluding": "6.6.131"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "5.12",
                                    "versionEndExcluding": "6.12.80"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "5.12",
                                    "versionEndExcluding": "6.18.21"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "5.12",
                                    "versionEndExcluding": "6.19.11"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "5.12",
                                    "versionEndExcluding": "7.0"
                                }
                            ]
                        }
                    ]
                }
            ],
            "references": [
                {
                    "url": "https://git.kernel.org/stable/c/3c3b97064764899c39a0abbd35a6caa031e70333"
                },
                {
                    "url": "https://git.kernel.org/stable/c/1cb9c7bc9025c637564fabc7fcc3c9343949e310"
                },
                {
                    "url": "https://git.kernel.org/stable/c/7a5260fbc6e79a1595328ec5c6aa3f937504a1f0"
                },
                {
                    "url": "https://git.kernel.org/stable/c/f8c444b918d639e1f9a621ee20fe481c1d10dfc4"
                },
                {
                    "url": "https://git.kernel.org/stable/c/87776f02449e3bded95b2ccbd6b012e9ae64e6f3"
                },
                {
                    "url": "https://git.kernel.org/stable/c/4d05dd18d867d58c6952a3bc260d244899da7256"
                },
                {
                    "url": "https://git.kernel.org/stable/c/48b8814e25d073dd84daf990a879a820bad2bcbd"
                }
            ],
            "title": "s390/syscalls: Add spectre boundary for syscall dispatch table",
            "x_generator": {
                "engine": "bippy-1.2.0"
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    }
}