{"api_version":"1","generated_at":"2026-04-25T12:26:24+00:00","cve":"CVE-2026-31483","urls":{"html":"https://cve.report/CVE-2026-31483","api":"https://cve.report/api/cve/CVE-2026-31483.json","docs":"https://cve.report/api","cve_org":"https://www.cve.org/CVERecord?id=CVE-2026-31483","nvd":"https://nvd.nist.gov/vuln/detail/CVE-2026-31483"},"summary":{"title":"s390/syscalls: Add spectre boundary for syscall dispatch table","description":"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.","state":"PUBLISHED","assigner":"Linux","published_at":"2026-04-22 14:16:45","updated_at":"2026-04-23 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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."}],"providerMetadata":{"dateUpdated":"2026-04-22T13:54:09.561Z","orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","shortName":"Linux"},"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"}}},"cveMetadata":{"assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","assignerShortName":"Linux","cveId":"CVE-2026-31483","datePublished":"2026-04-22T13:54:09.561Z","dateReserved":"2026-03-09T15:48:24.101Z","dateUpdated":"2026-04-22T13:54:09.561Z","state":"PUBLISHED"},"dataType":"CVE_RECORD","dataVersion":"5.2"},"nvd":{"publishedDate":"2026-04-22 14:16:45","lastModifiedDate":"2026-04-23 16:17:41","problem_types":[],"metrics":[],"configurations":[]},"legacy_mitre":{"record":{"CveYear":"2026","CveId":"31483","Ordinal":"1","Title":"s390/syscalls: Add spectre boundary for syscall dispatch table","CVE":"CVE-2026-31483","Year":"2026"},"notes":[{"CveYear":"2026","CveId":"31483","Ordinal":"1","NoteData":"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.","Type":"Description","Title":"s390/syscalls: Add spectre boundary for syscall dispatch table"}]}}}