{"affected":[{"defaultStatus":"unaffected","product":"Linux","source":"CNA: Linux","vendor":"Linux","versions":[{"lessThan":"3c3b97064764899c39a0abbd35a6caa031e70333","status":"affected","version":"56e62a73702836017564eaacd5212e4d0fa1c01d","versionType":"git"},{"lessThan":"1cb9c7bc9025c637564fabc7fcc3c9343949e310","status":"affected","version":"56e62a73702836017564eaacd5212e4d0fa1c01d","versionType":"git"},{"lessThan":"7a5260fbc6e79a1595328ec5c6aa3f937504a1f0","status":"affected","version":"56e62a73702836017564eaacd5212e4d0fa1c01d","versionType":"git"},{"lessThan":"f8c444b918d639e1f9a621ee20fe481c1d10dfc4","status":"affected","version":"56e62a73702836017564eaacd5212e4d0fa1c01d","versionType":"git"},{"lessThan":"87776f02449e3bded95b2ccbd6b012e9ae64e6f3","status":"affected","version":"56e62a73702836017564eaacd5212e4d0fa1c01d","versionType":"git"},{"lessThan":"4d05dd18d867d58c6952a3bc260d244899da7256","status":"affected","version":"56e62a73702836017564eaacd5212e4d0fa1c01d","versionType":"git"},{"lessThan":"48b8814e25d073dd84daf990a879a820bad2bcbd","status":"affected","version":"56e62a73702836017564eaacd5212e4d0fa1c01d","versionType":"git"}]},{"defaultStatus":"affected","product":"Linux","source":"CNA: Linux","vendor":"Linux","versions":[{"status":"affected","version":"5.12"},{"lessThan":"5.12","status":"unaffected","version":"0","versionType":"semver"},{"lessThanOrEqual":"5.15.*","status":"unaffected","version":"5.15.203","versionType":"semver"},{"lessThanOrEqual":"6.1.*","status":"unaffected","version":"6.1.168","versionType":"semver"},{"lessThanOrEqual":"6.6.*","status":"unaffected","version":"6.6.131","versionType":"semver"},{"lessThanOrEqual":"6.12.*","status":"unaffected","version":"6.12.80","versionType":"semver"},{"lessThanOrEqual":"6.18.*","status":"unaffected","version":"6.18.21","versionType":"semver"},{"lessThanOrEqual":"6.19.*","status":"unaffected","version":"6.19.11","versionType":"semver"},{"lessThanOrEqual":"*","status":"unaffected","version":"7.0","versionType":"original_commit_for_fix"}]}],"cveId":"CVE-2026-31483","cwes":[],"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.","epss":{"date":"2026-11-05","percentile":0.02026,"score":0.00123},"exploits":[],"kev":null,"metrics":[],"modifiedAt":1793915101265,"publishedAt":1776866049561,"references":[{"source":"CNA: Linux","tags":[],"url":"https://git.kernel.org/stable/c/3c3b97064764899c39a0abbd35a6caa031e70333"},{"source":"CNA: Linux","tags":[],"url":"https://git.kernel.org/stable/c/1cb9c7bc9025c637564fabc7fcc3c9343949e310"},{"source":"CNA: Linux","tags":[],"url":"https://git.kernel.org/stable/c/7a5260fbc6e79a1595328ec5c6aa3f937504a1f0"},{"source":"CNA: Linux","tags":[],"url":"https://git.kernel.org/stable/c/f8c444b918d639e1f9a621ee20fe481c1d10dfc4"},{"source":"CNA: Linux","tags":[],"url":"https://git.kernel.org/stable/c/87776f02449e3bded95b2ccbd6b012e9ae64e6f3"},{"source":"CNA: Linux","tags":[],"url":"https://git.kernel.org/stable/c/4d05dd18d867d58c6952a3bc260d244899da7256"},{"source":"CNA: Linux","tags":[],"url":"https://git.kernel.org/stable/c/48b8814e25d073dd84daf990a879a820bad2bcbd"}],"remediation":[],"revision":"8ae3217cd86be78b68404d1289ecbcbdd237ea29732635451178bd5648345d99","sources":[{"modifiedAt":1793915101265,"name":"CNA: Linux","retrievedAt":1793917059172,"url":"https://www.cve.org/CVERecord?id=CVE-2026-31483"},{"modifiedAt":null,"name":"FIRST EPSS","retrievedAt":1793917074256,"url":"https://api.first.org/data/v1/epss?cve=CVE-2026-31483"}],"ssvc":{"assessedAt":1793914484578,"automatable":"no","exploitation":"none","source":"ADP: CISA-ADP","technicalImpact":"partial"},"status":"published","title":"s390/syscalls: Add spectre boundary for syscall dispatch table","updatedAt":1793917074256}