{
  "affected": [
    {
      "ranges": [
        {
          "events": [
            {
              "introduced": "f7f3dc00f61261cdc9ccd8b886f21bc4dffd6fd9"
            },
            {
              "fixed": "ed7a3a246309ccc807238f1b4f159ee6d37ff9c4"
            },
            {
              "fixed": "0548529af20e68c6552817834b766646dd3bd7a7"
            },
            {
              "fixed": "1272cfedf4cd1019ddf583917a99b62f2d3645bb"
            },
            {
              "fixed": "91f02726b2203b71545713ecb7fb006e60a2d66f"
            },
            {
              "fixed": "b731aca06387b195058a9f6449a03b62efa1bd10"
            },
            {
              "fixed": "ad17f07e95e6e8505e2153e5b391f0d27eacce25"
            },
            {
              "fixed": "e6af5286efe5a56128b34032572c9ce9ebeccda3"
            },
            {
              "fixed": "546785c719418c6166834a47e372a88f5f7ae893"
            },
            {
              "fixed": "e55d98e7756135f32150b9b8f75d580d0d4b2dd3"
            }
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "type": "GIT"
        },
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "last_affected": "5abd1583e06b3963e5c9d915760367de86808b78"
            },
            {
              "last_affected": "4ba461d426490b6ed7e8298c4d3b7a13aa5d2686"
            },
            {
              "last_affected": "5a63725cd18fcee2af6ec46ccb856b64ad3077b4"
            }
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "type": "GIT"
        },
        {
          "events": [
            {
              "introduced": "3.16.58"
            },
            {
              "fixed": "3.17"
            }
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "type": "GIT"
        },
        {
          "events": [
            {
              "introduced": "4.4.144"
            },
            {
              "fixed": "4.5"
            }
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "type": "GIT"
        },
        {
          "events": [
            {
              "introduced": "4.9.102"
            },
            {
              "fixed": "4.10"
            }
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "type": "GIT"
        }
      ]
    },
    {
      "package": {
        "ecosystem": "Linux",
        "name": "Kernel"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "4.14.0"
            },
            {
              "fixed": "5.10.253"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "5.11.0"
            },
            {
              "fixed": "5.15.203"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "5.16.0"
            },
            {
              "fixed": "6.1.169"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.2.0"
            },
            {
              "fixed": "6.6.135"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.7.0"
            },
            {
              "fixed": "6.12.82"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.13.0"
            },
            {
              "fixed": "6.18.23"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.19.0"
            },
            {
              "fixed": "6.19.13"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.20.0"
            },
            {
              "fixed": "7.0.1"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "database_specific": {
    "cna_assigner": "Linux",
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/31xxx/CVE-2026-31628.json"
  },
  "details": "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.",
  "id": "CVE-2026-31628",
  "modified": "2026-07-08T05:39:01.951804977Z",
  "published": "2026-04-24T14:42:49.181Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/0548529af20e68c6552817834b766646dd3bd7a7"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/1272cfedf4cd1019ddf583917a99b62f2d3645bb"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/546785c719418c6166834a47e372a88f5f7ae893"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/91f02726b2203b71545713ecb7fb006e60a2d66f"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/ad17f07e95e6e8505e2153e5b391f0d27eacce25"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/b731aca06387b195058a9f6449a03b62efa1bd10"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/e55d98e7756135f32150b9b8f75d580d0d4b2dd3"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/e6af5286efe5a56128b34032572c9ce9ebeccda3"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/ed7a3a246309ccc807238f1b4f159ee6d37ff9c4"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/31xxx/CVE-2026-31628.json"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-31628"
    },
    {
      "type": "PACKAGE",
      "url": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git"
    }
  ],
  "schema_version": "1.7.5",
  "summary": "x86/CPU: Fix FPDSS on Zen1"
}