CVE-2026-31628 (GCVE-0-2026-31628)
Vulnerability from cvelistv5
Published
2026-04-24 14:42
Modified
2026-04-27 11:01
Severity ?
Summary
In the Linux kernel, the following vulnerability has been resolved: x86/CPU: Fix FPDSS on Zen1 Zen1's hardware divider can leave, under certain circumstances, partial results from previous operations. Those results can be leaked by another, attacker thread. Fix that with a chicken bit.
References
Impacted products
Vendor Product Version
Linux Linux Version: f7f3dc00f61261cdc9ccd8b886f21bc4dffd6fd9
Version: f7f3dc00f61261cdc9ccd8b886f21bc4dffd6fd9
Version: f7f3dc00f61261cdc9ccd8b886f21bc4dffd6fd9
Version: f7f3dc00f61261cdc9ccd8b886f21bc4dffd6fd9
Version: f7f3dc00f61261cdc9ccd8b886f21bc4dffd6fd9
Version: f7f3dc00f61261cdc9ccd8b886f21bc4dffd6fd9
Version: f7f3dc00f61261cdc9ccd8b886f21bc4dffd6fd9
Version: f7f3dc00f61261cdc9ccd8b886f21bc4dffd6fd9
Version: f7f3dc00f61261cdc9ccd8b886f21bc4dffd6fd9
Version: 5abd1583e06b3963e5c9d915760367de86808b78
Version: 4ba461d426490b6ed7e8298c4d3b7a13aa5d2686
Version: 5a63725cd18fcee2af6ec46ccb856b64ad3077b4
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{
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          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
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              "status": "affected",
              "version": "4.14"
            },
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              "version": "0",
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            },
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              "lessThanOrEqual": "6.1.*",
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      "cpeApplicability": [
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              "negate": false,
              "operator": "OR"
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      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nx86/CPU: Fix FPDSS on Zen1\n\nZen1\u0027s 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."
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-04-27T11:01:33.606Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
        {
          "url": "https://git.kernel.org/stable/c/ed7a3a246309ccc807238f1b4f159ee6d37ff9c4"
        },
        {
          "url": "https://git.kernel.org/stable/c/0548529af20e68c6552817834b766646dd3bd7a7"
        },
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          "url": "https://git.kernel.org/stable/c/b731aca06387b195058a9f6449a03b62efa1bd10"
        },
        {
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          "url": "https://git.kernel.org/stable/c/e6af5286efe5a56128b34032572c9ce9ebeccda3"
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        {
          "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"
      }
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  },
  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2026-31628",
    "datePublished": "2026-04-24T14:42:49.181Z",
    "dateReserved": "2026-03-09T15:48:24.124Z",
    "dateUpdated": "2026-04-27T11:01:33.606Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}


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