{
  "schema_version": "1.6.1",
  "id": "RPI-CVE-2026-31628",
  "modified": "2026-10-07T17:22:01Z",
  "upstream": [
    "CVE-2026-31628"
  ],
  "published": "2026-04-24T14:43:40Z",
  "summary": "x86/CPU: Fix FPDSS on Zen1",
  "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.",
  "affected": [
    {
      "package": {
        "ecosystem": "Raspberry Pi OS:12",
        "name": "linux"
      },
      "versions": [
        "1:6.1.47-1+rpt4"
      ],
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "linux-image-6.1.0-rpi3-rpi-2712",
            "binary_version": "1:6.1.47-1+rpt4"
          },
          {
            "binary_name": "linux-image-6.1.0-rpi3-rpi-v6",
            "binary_version": "1:6.1.47-1+rpt4"
          },
          {
            "binary_name": "linux-image-6.1.0-rpi3-rpi-v7",
            "binary_version": "1:6.1.47-1+rpt4"
          },
          {
            "binary_name": "linux-image-6.1.0-rpi3-rpi-v7l",
            "binary_version": "1:6.1.47-1+rpt4"
          },
          {
            "binary_name": "linux-image-6.1.0-rpi3-rpi-v8",
            "binary_version": "1:6.1.47-1+rpt4"
          }
        ]
      },
      "database_specific": {
        "per_version": {
          "1:6.1.47-1+rpt4": {
            "linux_commit": "655fc658a15ae7a6f37103754adb39ba52a9a14e",
            "upstream_version": "6.1.47",
            "assessment": "commit ancestry (strak rule)",
            "upstream_fixed": "6.1.169",
            "compiled_filter": false
          }
        }
      }
    }
  ],
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://www.cve.org/CVERecord?id=CVE-2026-31628"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/ed7a3a246309ccc807238f1b4f159ee6d37ff9c4"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/0548529af20e68c6552817834b766646dd3bd7a7"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/1272cfedf4cd1019ddf583917a99b62f2d3645bb"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/91f02726b2203b71545713ecb7fb006e60a2d66f"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/b731aca06387b195058a9f6449a03b62efa1bd10"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/ad17f07e95e6e8505e2153e5b391f0d27eacce25"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/e6af5286efe5a56128b34032572c9ce9ebeccda3"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/546785c719418c6166834a47e372a88f5f7ae893"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/e55d98e7756135f32150b9b8f75d580d0d4b2dd3"
    }
  ],
  "database_specific": {
    "source": "https://git.kernel.org/pub/scm/linux/security/vulns.git",
    "upstream_modified": "2026-06-15T02:03:26Z"
  }
}