{
  "affected": [
    {
      "database_specific": {
        "unresolved_ranges": [
          {
            "events": [
              {
                "introduced": "5.5"
              },
              {
                "fixed": "5.10.38"
              }
            ]
          },
          {
            "events": [
              {
                "introduced": "5.11"
              },
              {
                "fixed": "5.11.22"
              }
            ]
          },
          {
            "events": [
              {
                "introduced": "5.12"
              },
              {
                "fixed": "5.12.5"
              }
            ]
          },
          {
            "events": [
              {
                "introduced": "0"
              },
              {
                "last_affected": "5.13-rc1"
              }
            ]
          }
        ]
      }
    }
  ],
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nKVM: VMX: Disable preemption when probing user return MSRs\n\nDisable preemption when probing a user return MSR via RDSMR/WRMSR.  If\nthe MSR holds a different value per logical CPU, the WRMSR could corrupt\nthe host's value if KVM is preempted between the RDMSR and WRMSR, and\nthen rescheduled on a different CPU.\n\nOpportunistically land the helper in common x86, SVM will use the helper\nin a future commit.",
  "id": "CVE-2021-46977",
  "modified": "2026-03-15T13:48:09.991050385Z",
  "published": "2024-02-28T09:15:37.140Z",
  "references": [
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/31f29749ee970c251b3a7e5b914108425940d089"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/5104d7ffcf24749939bea7fdb5378d186473f890"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/5adcdeb57007ccf8ab7ac20bf787ffb6fafb1a94"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/e3ea1895df719c4ef87862501bb10d95f4177bed"
    }
  ],
  "severity": [
    {
      "score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
      "type": "CVSS_V3"
    }
  ]
}