{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-31628","assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","state":"PUBLISHED","assignerShortName":"Linux","dateReserved":"2026-03-09T15:48:24.124Z","datePublished":"2026-04-24T14:42:49.181Z","dateUpdated":"2026-05-11T22:12:29.370Z"},"containers":{"cna":{"providerMetadata":{"orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","shortName":"Linux","dateUpdated":"2026-05-11T22:12:29.370Z"},"descriptions":[{"lang":"en","value":"In the Linux kernel, the following vulnerability has been resolved:\n\nx86/CPU: Fix FPDSS on Zen1\n\nZen1's hardware divider can leave, under certain circumstances, partial\nresults from previous operations.  Those results can be leaked by\nanother, attacker thread.\n\nFix that with a chicken bit."}],"affected":[{"product":"Linux","vendor":"Linux","defaultStatus":"unaffected","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["arch/x86/include/asm/msr-index.h","arch/x86/kernel/cpu/amd.c"],"versions":[{"version":"f7f3dc00f61261cdc9ccd8b886f21bc4dffd6fd9","lessThan":"ed7a3a246309ccc807238f1b4f159ee6d37ff9c4","status":"affected","versionType":"git"},{"version":"f7f3dc00f61261cdc9ccd8b886f21bc4dffd6fd9","lessThan":"0548529af20e68c6552817834b766646dd3bd7a7","status":"affected","versionType":"git"},{"version":"f7f3dc00f61261cdc9ccd8b886f21bc4dffd6fd9","lessThan":"1272cfedf4cd1019ddf583917a99b62f2d3645bb","status":"affected","versionType":"git"},{"version":"f7f3dc00f61261cdc9ccd8b886f21bc4dffd6fd9","lessThan":"91f02726b2203b71545713ecb7fb006e60a2d66f","status":"affected","versionType":"git"},{"version":"f7f3dc00f61261cdc9ccd8b886f21bc4dffd6fd9","lessThan":"b731aca06387b195058a9f6449a03b62efa1bd10","status":"affected","versionType":"git"},{"version":"f7f3dc00f61261cdc9ccd8b886f21bc4dffd6fd9","lessThan":"ad17f07e95e6e8505e2153e5b391f0d27eacce25","status":"affected","versionType":"git"},{"version":"f7f3dc00f61261cdc9ccd8b886f21bc4dffd6fd9","lessThan":"e6af5286efe5a56128b34032572c9ce9ebeccda3","status":"affected","versionType":"git"},{"version":"f7f3dc00f61261cdc9ccd8b886f21bc4dffd6fd9","lessThan":"546785c719418c6166834a47e372a88f5f7ae893","status":"affected","versionType":"git"},{"version":"f7f3dc00f61261cdc9ccd8b886f21bc4dffd6fd9","lessThan":"e55d98e7756135f32150b9b8f75d580d0d4b2dd3","status":"affected","versionType":"git"},{"version":"5abd1583e06b3963e5c9d915760367de86808b78","status":"affected","versionType":"git"},{"version":"4ba461d426490b6ed7e8298c4d3b7a13aa5d2686","status":"affected","versionType":"git"},{"version":"5a63725cd18fcee2af6ec46ccb856b64ad3077b4","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/x86/include/asm/msr-index.h","arch/x86/kernel/cpu/amd.c"],"versions":[{"version":"4.14","status":"affected"},{"version":"0","lessThan":"4.14","status":"unaffected","versionType":"semver"},{"version":"5.10.253","lessThanOrEqual":"5.10.*","status":"unaffected","versionType":"semver"},{"version":"5.15.203","lessThanOrEqual":"5.15.*","status":"unaffected","versionType":"semver"},{"version":"6.1.169","lessThanOrEqual":"6.1.*","status":"unaffected","versionType":"semver"},{"version":"6.6.135","lessThanOrEqual":"6.6.*","status":"unaffected","versionType":"semver"},{"version":"6.12.82","lessThanOrEqual":"6.12.*","status":"unaffected","versionType":"semver"},{"version":"6.18.23","lessThanOrEqual":"6.18.*","status":"unaffected","versionType":"semver"},{"version":"6.19.13","lessThanOrEqual":"6.19.*","status":"unaffected","versionType":"semver"},{"version":"7.0.1","lessThanOrEqual":"7.0.*","status":"unaffected","versionType":"semver"},{"version":"7.1-rc1","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":"4.14","versionEndExcluding":"5.10.253"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"4.14","versionEndExcluding":"5.15.203"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"4.14","versionEndExcluding":"6.1.169"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"4.14","versionEndExcluding":"6.6.135"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"4.14","versionEndExcluding":"6.12.82"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"4.14","versionEndExcluding":"6.18.23"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"4.14","versionEndExcluding":"6.19.13"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"4.14","versionEndExcluding":"7.0.1"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"4.14","versionEndExcluding":"7.1-rc1"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"3.16.58"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"4.4.144"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"4.9.102"}]}]}],"references":[{"url":"https://git.kernel.org/stable/c/ed7a3a246309ccc807238f1b4f159ee6d37ff9c4"},{"url":"https://git.kernel.org/stable/c/0548529af20e68c6552817834b766646dd3bd7a7"},{"url":"https://git.kernel.org/stable/c/1272cfedf4cd1019ddf583917a99b62f2d3645bb"},{"url":"https://git.kernel.org/stable/c/91f02726b2203b71545713ecb7fb006e60a2d66f"},{"url":"https://git.kernel.org/stable/c/b731aca06387b195058a9f6449a03b62efa1bd10"},{"url":"https://git.kernel.org/stable/c/ad17f07e95e6e8505e2153e5b391f0d27eacce25"},{"url":"https://git.kernel.org/stable/c/e6af5286efe5a56128b34032572c9ce9ebeccda3"},{"url":"https://git.kernel.org/stable/c/546785c719418c6166834a47e372a88f5f7ae893"},{"url":"https://git.kernel.org/stable/c/e55d98e7756135f32150b9b8f75d580d0d4b2dd3"}],"title":"x86/CPU: Fix FPDSS on Zen1","x_generator":{"engine":"bippy-1.2.0"}}}}