{"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"}}}}