Vulnerability-Lookup

FKIE_CVE-2024-53135

Vulnerability from fkie_nvd - Published: 2024-12-04 15:15 - Updated: 2026-10-15 22:18

Severity

8.8 (High) - CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H
6.5 (Medium) - CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:N/I:N/A:H

Summary

In the Linux kernel, the following vulnerability has been resolved: KVM: VMX: Bury Intel PT virtualization (guest/host mode) behind CONFIG_BROKEN Hide KVM's pt_mode module param behind CONFIG_BROKEN, i.e. disable support for virtualizing Intel PT via guest/host mode unless BROKEN=y. There are myriad bugs in the implementation, some of which are fatal to the guest, and others which put the stability and health of the host at risk. For guest fatalities, the most glaring issue is that KVM fails to ensure tracing is disabled, and *stays* disabled prior to VM-Enter, which is necessary as hardware disallows loading (the guest's) RTIT_CTL if tracing is enabled (enforced via a VMX consistency check). Per the SDM: If the logical processor is operating with Intel PT enabled (if IA32_RTIT_CTL.TraceEn = 1) at the time of VM entry, the "load IA32_RTIT_CTL" VM-entry control must be 0. On the host side, KVM doesn't validate the guest CPUID configuration provided by userspace, and even worse, uses the guest configuration to decide what MSRs to save/load at VM-Enter and VM-Exit. E.g. configuring guest CPUID to enumerate more address ranges than are supported in hardware will result in KVM trying to passthrough, save, and load non-existent MSRs, which generates a variety of WARNs, ToPA ERRORs in the host, a potential deadlock, etc.

References

URL	Tags
416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/aa0d42cacf093a6fcca872edc954f6f812926a17	Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/b8a1d572478b6f239061ee9578b2451bf2f021c2
416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/b91bb0ce5cd7005b376eac690ec664c1b56372ec	Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/c3742319d021f5aa3a0a8c828485fee14753f6de
416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/d28b059ee4779b5102c5da6e929762520510e406	Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/d4b42f926adcce4e5ec193c714afd9d37bba8e5b
416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/e6716f4230a8784957273ddd27326264b27b9313	Patch
af854a3a-2127-422b-91ae-364da2661108	https://lists.debian.org/debian-lts-announce/2025/01/msg00001.html
af854a3a-2127-422b-91ae-364da2661108	https://lists.debian.org/debian-lts-announce/2025/03/msg00002.html

Impacted products

Vendor	Product	Version
linux	linux_kernel	*
linux	linux_kernel	*
linux	linux_kernel	*
linux	linux_kernel	6.12
linux	linux_kernel	6.12
linux	linux_kernel	6.12
linux	linux_kernel	6.12
linux	linux_kernel	6.12
linux	linux_kernel	6.12
linux	linux_kernel	6.12

JSON

To clipboard

{
  "affected": [
    {
      "affectedData": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "arch/x86/kvm/vmx/vmx.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThan": "c3742319d021f5aa3a0a8c828485fee14753f6de",
              "status": "affected",
              "version": "f99e3daf94ff35dd4a878d32ff66e1fd35223ad6",
              "versionType": "git"
            },
            {
              "lessThan": "d4b42f926adcce4e5ec193c714afd9d37bba8e5b",
              "status": "affected",
              "version": "f99e3daf94ff35dd4a878d32ff66e1fd35223ad6",
              "versionType": "git"
            },
            {
              "lessThan": "b8a1d572478b6f239061ee9578b2451bf2f021c2",
              "status": "affected",
              "version": "f99e3daf94ff35dd4a878d32ff66e1fd35223ad6",
              "versionType": "git"
            },
            {
              "lessThan": "e6716f4230a8784957273ddd27326264b27b9313",
              "status": "affected",
              "version": "f99e3daf94ff35dd4a878d32ff66e1fd35223ad6",
              "versionType": "git"
            },
            {
              "lessThan": "d28b059ee4779b5102c5da6e929762520510e406",
              "status": "affected",
              "version": "f99e3daf94ff35dd4a878d32ff66e1fd35223ad6",
              "versionType": "git"
            },
            {
              "lessThan": "b91bb0ce5cd7005b376eac690ec664c1b56372ec",
              "status": "affected",
              "version": "f99e3daf94ff35dd4a878d32ff66e1fd35223ad6",
              "versionType": "git"
            },
            {
              "lessThan": "aa0d42cacf093a6fcca872edc954f6f812926a17",
              "status": "affected",
              "version": "f99e3daf94ff35dd4a878d32ff66e1fd35223ad6",
              "versionType": "git"
            }
          ]
        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "arch/x86/kvm/vmx/vmx.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "5.0"
            },
            {
              "lessThan": "5.0",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.4.*",
              "status": "unaffected",
              "version": "5.4.287",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.10.*",
              "status": "unaffected",
              "version": "5.10.231",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.15.*",
              "status": "unaffected",
              "version": "5.15.174",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.1.*",
              "status": "unaffected",
              "version": "6.1.119",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.6.*",
              "status": "unaffected",
              "version": "6.6.63",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.11.*",
              "status": "unaffected",
              "version": "6.11.10",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "6.12",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    }
  ],
  "configurations": [
    {
      "nodes": [
        {
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
              "matchCriteriaId": "8D57FCD1-3F44-46BA-AC05-0FF305BED53B",
              "versionEndExcluding": "6.1.119",
              "versionStartIncluding": "5.0",
              "vulnerable": true
            },
            {
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              "matchCriteriaId": "8800BB45-48BC-4B52-BDA5-B1E4633F42E5",
              "versionEndExcluding": "6.6.63",
              "versionStartIncluding": "6.2",
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            },
            {
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              "versionEndExcluding": "6.11.10",
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              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:o:linux:linux_kernel:6.12:rc1:*:*:*:*:*:*",
              "matchCriteriaId": "7F361E1D-580F-4A2D-A509-7615F73167A1",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:o:linux:linux_kernel:6.12:rc2:*:*:*:*:*:*",
              "matchCriteriaId": "925478D0-3E3D-4E6F-ACD5-09F28D5DF82C",
              "vulnerable": true
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            {
              "criteria": "cpe:2.3:o:linux:linux_kernel:6.12:rc3:*:*:*:*:*:*",
              "matchCriteriaId": "3C95E234-D335-4B6C-96BF-E2CEBD8654ED",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:o:linux:linux_kernel:6.12:rc4:*:*:*:*:*:*",
              "matchCriteriaId": "E0F717D8-3014-4F84-8086-0124B2111379",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:o:linux:linux_kernel:6.12:rc5:*:*:*:*:*:*",
              "matchCriteriaId": "24DBE6C7-2AAE-4818-AED2-E131F153D2FA",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:o:linux:linux_kernel:6.12:rc6:*:*:*:*:*:*",
              "matchCriteriaId": "24B88717-53F5-42AA-9B72-14C707639E3F",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:o:linux:linux_kernel:6.12:rc7:*:*:*:*:*:*",
              "matchCriteriaId": "1EF8CD82-1EAE-4254-9545-F85AB94CF90F",
              "vulnerable": true
            }
          ],
          "negate": false,
          "operator": "OR"
        }
      ]
    }
  ],
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nKVM: VMX: Bury Intel PT virtualization (guest/host mode) behind CONFIG_BROKEN\n\nHide KVM\u0027s pt_mode module param behind CONFIG_BROKEN, i.e. disable support\nfor virtualizing Intel PT via guest/host mode unless BROKEN=y.  There are\nmyriad bugs in the implementation, some of which are fatal to the guest,\nand others which put the stability and health of the host at risk.\n\nFor guest fatalities, the most glaring issue is that KVM fails to ensure\ntracing is disabled, and *stays* disabled prior to VM-Enter, which is\nnecessary as hardware disallows loading (the guest\u0027s) RTIT_CTL if tracing\nis enabled (enforced via a VMX consistency check).  Per the SDM:\n\n  If the logical processor is operating with Intel PT enabled (if\n  IA32_RTIT_CTL.TraceEn = 1) at the time of VM entry, the \"load\n  IA32_RTIT_CTL\" VM-entry control must be 0.\n\nOn the host side, KVM doesn\u0027t validate the guest CPUID configuration\nprovided by userspace, and even worse, uses the guest configuration to\ndecide what MSRs to save/load at VM-Enter and VM-Exit.  E.g. configuring\nguest CPUID to enumerate more address ranges than are supported in hardware\nwill result in KVM trying to passthrough, save, and load non-existent MSRs,\nwhich generates a variety of WARNs, ToPA ERRORs in the host, a potential\ndeadlock, etc."
    },
    {
      "lang": "es",
      "value": "En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: KVM: VMX: oculta la virtualizaci\u00f3n de Intel PT (modo invitado/host) detr\u00e1s de CONFIG_BROKEN Oculta el par\u00e1metro del m\u00f3dulo pt_mode de KVM detr\u00e1s de CONFIG_BROKEN, es decir, deshabilita la compatibilidad con la virtualizaci\u00f3n de Intel PT a trav\u00e9s del modo invitado/host a menos que BROKEN=y. Hay una gran cantidad de errores en la implementaci\u00f3n, algunos de los cuales son fatales para el invitado y otros que ponen en riesgo la estabilidad y la salud del host. Para las fatalidades del invitado, el problema m\u00e1s evidente es que KVM no garantiza que el seguimiento est\u00e9 deshabilitado y *permanece* deshabilitado antes de VM-Enter, lo que es necesario ya que el hardware no permite cargar RTIT_CTL (del invitado) si el seguimiento est\u00e1 habilitado (lo que se aplica a trav\u00e9s de una verificaci\u00f3n de consistencia de VMX). Seg\u00fan el SDM: si el procesador l\u00f3gico est\u00e1 funcionando con Intel PT habilitado (si IA32_RTIT_CTL.TraceEn = 1) en el momento de la entrada de la VM, el control de entrada de la VM \"cargar IA32_RTIT_CTL\" debe ser 0. En el lado del host, KVM no valida la configuraci\u00f3n de CPUID del invitado proporcionada por el espacio de usuario y, lo que es peor, utiliza la configuraci\u00f3n del invitado para decidir qu\u00e9 MSR guardar/cargar en VM-Enter y VM-Exit. Por ejemplo, configurar la CPUID del invitado para enumerar m\u00e1s rangos de direcciones de los que admite el hardware har\u00e1 que KVM intente pasar, guardar y cargar MSR inexistentes, lo que genera una variedad de WARN, ERRORES ToPA en el host, un posible bloqueo, etc."
    }
  ],
  "id": "CVE-2024-53135",
  "lastModified": "2026-10-15T22:18:00.050",
  "metrics": {
    "cvssMetricV31": [
      {
        "cvssData": {
          "attackComplexity": "LOW",
          "attackVector": "LOCAL",
          "availabilityImpact": "HIGH",
          "baseScore": 8.8,
          "baseSeverity": "HIGH",
          "confidentialityImpact": "HIGH",
          "integrityImpact": "HIGH",
          "privilegesRequired": "LOW",
          "scope": "CHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H",
          "version": "3.1"
        },
        "exploitabilityScore": 2.0,
        "impactScore": 6.0,
        "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "type": "Secondary"
      },
      {
        "cvssData": {
          "attackComplexity": "LOW",
          "attackVector": "LOCAL",
          "availabilityImpact": "HIGH",
          "baseScore": 6.5,
          "baseSeverity": "MEDIUM",
          "confidentialityImpact": "NONE",
          "integrityImpact": "NONE",
          "privilegesRequired": "LOW",
          "scope": "CHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:N/I:N/A:H",
          "version": "3.1"
        },
        "exploitabilityScore": 2.0,
        "impactScore": 4.0,
        "source": "nvd@nist.gov",
        "type": "Primary"
      }
    ],
    "ssvcV203": [
      {
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "ssvcData": {
          "id": "CVE-2024-53135",
          "options": [
            {
              "exploitation": "none"
            },
            {
              "automatable": "no"
            },
            {
              "technicalImpact": "total"
            }
          ],
          "role": "CISA Coordinator",
          "timestamp": "2026-10-15T21:40:43.557018Z",
          "version": "2.0.3"
        }
      }
    ]
  },
  "published": "2024-12-04T15:15:13.630",
  "references": [
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "tags": [
        "Patch"
      ],
      "url": "https://git.kernel.org/stable/c/aa0d42cacf093a6fcca872edc954f6f812926a17"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/b8a1d572478b6f239061ee9578b2451bf2f021c2"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "tags": [
        "Patch"
      ],
      "url": "https://git.kernel.org/stable/c/b91bb0ce5cd7005b376eac690ec664c1b56372ec"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/c3742319d021f5aa3a0a8c828485fee14753f6de"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "tags": [
        "Patch"
      ],
      "url": "https://git.kernel.org/stable/c/d28b059ee4779b5102c5da6e929762520510e406"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/d4b42f926adcce4e5ec193c714afd9d37bba8e5b"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "tags": [
        "Patch"
      ],
      "url": "https://git.kernel.org/stable/c/e6716f4230a8784957273ddd27326264b27b9313"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "url": "https://lists.debian.org/debian-lts-announce/2025/01/msg00001.html"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "url": "https://lists.debian.org/debian-lts-announce/2025/03/msg00002.html"
    }
  ],
  "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
  "vulnStatus": "Modified",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "NVD-CWE-noinfo"
        }
      ],
      "source": "nvd@nist.gov",
      "type": "Primary"
    }
  ]
}

CVE-2024-53135 (GCVE-0-2024-53135)

Vulnerability from cvelistv5 – Published: 2024-12-04 14:20 – Updated: 2026-10-15 21:41

Title

KVM: VMX: Bury Intel PT virtualization (guest/host mode) behind CONFIG_BROKEN

Summary

Severity

8.8 (High)


                        
                          CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H

SSVC

Exploitation: none Automatable: no Technical Impact: total

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2026-10-15 21:40 UTC

Assigner

Linux CNA under the mitre root

CNA scorecard D 53/100 over 6639 records in the last 180 days details

References

9 references

URL	Tags
https://git.kernel.org/stable/c/c3742319d021f5aa3…
https://git.kernel.org/stable/c/d4b42f926adcce4e5…
https://git.kernel.org/stable/c/b8a1d572478b6f239…
https://git.kernel.org/stable/c/e6716f4230a878495…
https://git.kernel.org/stable/c/d28b059ee4779b510…
https://git.kernel.org/stable/c/b91bb0ce5cd7005b3…
https://git.kernel.org/stable/c/aa0d42cacf093a6fc…
https://lists.debian.org/debian-lts-announce/2025…
https://lists.debian.org/debian-lts-announce/2025…

Impacted products

2 products

Vendor	Product	Version
Linux	Linux	Affected: f99e3daf94ff35dd4a878d32ff66e1fd35223ad6 , < c3742319d021f5aa3a0a8c828485fee14753f6de (git) Affected: f99e3daf94ff35dd4a878d32ff66e1fd35223ad6 , < d4b42f926adcce4e5ec193c714afd9d37bba8e5b (git) Affected: f99e3daf94ff35dd4a878d32ff66e1fd35223ad6 , < b8a1d572478b6f239061ee9578b2451bf2f021c2 (git) Affected: f99e3daf94ff35dd4a878d32ff66e1fd35223ad6 , < e6716f4230a8784957273ddd27326264b27b9313 (git) Affected: f99e3daf94ff35dd4a878d32ff66e1fd35223ad6 , < d28b059ee4779b5102c5da6e929762520510e406 (git) Affected: f99e3daf94ff35dd4a878d32ff66e1fd35223ad6 , < b91bb0ce5cd7005b376eac690ec664c1b56372ec (git) Affected: f99e3daf94ff35dd4a878d32ff66e1fd35223ad6 , < aa0d42cacf093a6fcca872edc954f6f812926a17 (git)
Linux	Linux	Affected: 5.0 Unaffected: 0 , < 5.0 (semver) Unaffected: 5.4.287 , ≤ 5.4.* (semver) Unaffected: 5.10.231 , ≤ 5.10.* (semver) Unaffected: 5.15.174 , ≤ 5.15.* (semver) Unaffected: 6.1.119 , ≤ 6.1.* (semver) Unaffected: 6.6.63 , ≤ 6.6.* (semver) Unaffected: 6.11.10 , ≤ 6.11.* (semver) Unaffected: 6.12 , ≤ * (original_commit_for_fix)

Show details on NVD website

JSON

To clipboard

{
  "containers": {
    "adp": [
      {
        "providerMetadata": {
          "dateUpdated": "2025-11-03T22:29:37.797Z",
          "orgId": "af854a3a-2127-422b-91ae-364da2661108",
          "shortName": "CVE"
        },
        "references": [
          {
            "url": "https://lists.debian.org/debian-lts-announce/2025/03/msg00002.html"
          },
          {
            "url": "https://lists.debian.org/debian-lts-announce/2025/01/msg00001.html"
          }
        ],
        "title": "CVE Program Container"
      },
      {
        "metrics": [
          {
            "other": {
              "content": {
                "id": "CVE-2024-53135",
                "options": [
                  {
                    "Exploitation": "none"
                  },
                  {
                    "Automatable": "no"
                  },
                  {
                    "Technical Impact": "total"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2026-10-15T21:40:43.557018Z",
                "version": "2.0.3"
              },
              "type": "ssvc"
            }
          }
        ],
        "providerMetadata": {
          "dateUpdated": "2026-10-15T21:41:46.095Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "title": "CISA ADP Vulnrichment"
      }
    ],
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "arch/x86/kvm/vmx/vmx.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThan": "c3742319d021f5aa3a0a8c828485fee14753f6de",
              "status": "affected",
              "version": "f99e3daf94ff35dd4a878d32ff66e1fd35223ad6",
              "versionType": "git"
            },
            {
              "lessThan": "d4b42f926adcce4e5ec193c714afd9d37bba8e5b",
              "status": "affected",
              "version": "f99e3daf94ff35dd4a878d32ff66e1fd35223ad6",
              "versionType": "git"
            },
            {
              "lessThan": "b8a1d572478b6f239061ee9578b2451bf2f021c2",
              "status": "affected",
              "version": "f99e3daf94ff35dd4a878d32ff66e1fd35223ad6",
              "versionType": "git"
            },
            {
              "lessThan": "e6716f4230a8784957273ddd27326264b27b9313",
              "status": "affected",
              "version": "f99e3daf94ff35dd4a878d32ff66e1fd35223ad6",
              "versionType": "git"
            },
            {
              "lessThan": "d28b059ee4779b5102c5da6e929762520510e406",
              "status": "affected",
              "version": "f99e3daf94ff35dd4a878d32ff66e1fd35223ad6",
              "versionType": "git"
            },
            {
              "lessThan": "b91bb0ce5cd7005b376eac690ec664c1b56372ec",
              "status": "affected",
              "version": "f99e3daf94ff35dd4a878d32ff66e1fd35223ad6",
              "versionType": "git"
            },
            {
              "lessThan": "aa0d42cacf093a6fcca872edc954f6f812926a17",
              "status": "affected",
              "version": "f99e3daf94ff35dd4a878d32ff66e1fd35223ad6",
              "versionType": "git"
            }
          ]
        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "arch/x86/kvm/vmx/vmx.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "5.0"
            },
            {
              "lessThan": "5.0",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.4.*",
              "status": "unaffected",
              "version": "5.4.287",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.10.*",
              "status": "unaffected",
              "version": "5.10.231",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.15.*",
              "status": "unaffected",
              "version": "5.15.174",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.1.*",
              "status": "unaffected",
              "version": "6.1.119",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.6.*",
              "status": "unaffected",
              "version": "6.6.63",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.11.*",
              "status": "unaffected",
              "version": "6.11.10",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "6.12",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "cpeApplicability": [
        {
          "nodes": [
            {
              "cpeMatch": [
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "5.4.287",
                  "versionStartIncluding": "5.0",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "5.10.231",
                  "versionStartIncluding": "5.0",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "5.15.174",
                  "versionStartIncluding": "5.0",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.1.119",
                  "versionStartIncluding": "5.0",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.6.63",
                  "versionStartIncluding": "5.0",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.11.10",
                  "versionStartIncluding": "5.0",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.12",
                  "versionStartIncluding": "5.0",
                  "vulnerable": true
                }
              ],
              "negate": false,
              "operator": "OR"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nKVM: VMX: Bury Intel PT virtualization (guest/host mode) behind CONFIG_BROKEN\n\nHide KVM\u0027s pt_mode module param behind CONFIG_BROKEN, i.e. disable support\nfor virtualizing Intel PT via guest/host mode unless BROKEN=y.  There are\nmyriad bugs in the implementation, some of which are fatal to the guest,\nand others which put the stability and health of the host at risk.\n\nFor guest fatalities, the most glaring issue is that KVM fails to ensure\ntracing is disabled, and *stays* disabled prior to VM-Enter, which is\nnecessary as hardware disallows loading (the guest\u0027s) RTIT_CTL if tracing\nis enabled (enforced via a VMX consistency check).  Per the SDM:\n\n  If the logical processor is operating with Intel PT enabled (if\n  IA32_RTIT_CTL.TraceEn = 1) at the time of VM entry, the \"load\n  IA32_RTIT_CTL\" VM-entry control must be 0.\n\nOn the host side, KVM doesn\u0027t validate the guest CPUID configuration\nprovided by userspace, and even worse, uses the guest configuration to\ndecide what MSRs to save/load at VM-Enter and VM-Exit.  E.g. configuring\nguest CPUID to enumerate more address ranges than are supported in hardware\nwill result in KVM trying to passthrough, save, and load non-existent MSRs,\nwhich generates a variety of WARNs, ToPA ERRORs in the host, a potential\ndeadlock, etc."
        }
      ],
      "metrics": [
        {
          "cvssV3_1": {
            "baseScore": 8.8,
            "baseSeverity": "HIGH",
            "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H",
            "version": "3.1"
          },
          "scenarios": [
            {
              "lang": "en",
              "value": "AV:L - The vulnerability is reached through local `/dev/kvm` ioctls (`KVM_SET_CPUID2`, `KVM_SET_MSRS`, `KVM_RUN`) and guest WRMSRs to RTIT MSRs; no network or adjacent-network path exists.\nAC:L - Scoring the vulnerable configuration (`pt_mode=1`) as present per CVSS practice, the trigger is a fixed, fully deterministic ioctl sequence \u2014 set CPUID leaf 0x14.1 EAX[2:0]=7, set RTIT_CTL.TraceEn, run the vCPU \u2014 with no race to win and no memory-layout condition outside the attacker\u0027s control.\nPR:L - The attacker needs access to `/dev/kvm`, which is routinely granted to unprivileged accounts (the `kvm` group, the unprivileged `qemu`/`libvirt-qemu` user, jailed VMMs such as crosvm/Firecracker, nested-virt cloud tenants) \u2014 no root or CAP_SYS_ADMIN is required.\nUI:N - The attacker performs the entire sequence within its own VM; no action by any other user or administrator is needed once the host is running with `pt_mode=1`.\nS:C - The bug lives on the KVM virtualization boundary \u2014 a confined VM/VMM corrupts host kernel memory and destabilizes the host, and conversely host PT activity kills unrelated guests via VM-entry consistency-check failures, so impact crosses the guest/host security authority.\nC:H - `pt_load_msr()` reads `addr_a[]/addr_b[]` past the end of `pt_ctx` (out-of-bounds read of adjacent `struct vcpu_vmx` state), the guest gains passthrough read access to MSRs 0x588\u20130x58D, and the resulting heap corruption of a live `perf_event *` in `lbr_desc` is leverageable for host memory disclosure.\nI:H - `pt_save_msr()` performs an out-of-bounds write of up to 24 bytes past `pt_desc` into `lbr_desc`, overwriting `struct x86_pmu_lbr records` and a kernel `struct perf_event *` pointer that is later dereferenced by the LBR virtualization code \u2014 kernel object corruption in the KVM run path.\nA:H - The maintainer documents host WARN storms, ToPA ERRORs and a potential deadlock issued from the IRQ-disabled `vmx_vcpu_run()` fast path, plus VM-entry consistency-check failures that are fatal to running guests \u2014 i.e. host hang and VM crash."
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-08-05T11:43:59.446Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
        {
          "url": "https://git.kernel.org/stable/c/c3742319d021f5aa3a0a8c828485fee14753f6de"
        },
        {
          "url": "https://git.kernel.org/stable/c/d4b42f926adcce4e5ec193c714afd9d37bba8e5b"
        },
        {
          "url": "https://git.kernel.org/stable/c/b8a1d572478b6f239061ee9578b2451bf2f021c2"
        },
        {
          "url": "https://git.kernel.org/stable/c/e6716f4230a8784957273ddd27326264b27b9313"
        },
        {
          "url": "https://git.kernel.org/stable/c/d28b059ee4779b5102c5da6e929762520510e406"
        },
        {
          "url": "https://git.kernel.org/stable/c/b91bb0ce5cd7005b376eac690ec664c1b56372ec"
        },
        {
          "url": "https://git.kernel.org/stable/c/aa0d42cacf093a6fcca872edc954f6f812926a17"
        }
      ],
      "title": "KVM: VMX: Bury Intel PT virtualization (guest/host mode) behind CONFIG_BROKEN",
      "x_generator": {
        "engine": "bippy-1.2.0"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2024-53135",
    "datePublished": "2024-12-04T14:20:40.815Z",
    "dateReserved": "2024-11-19T17:17:24.996Z",
    "dateUpdated": "2026-10-15T21:41:46.095Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}

Sightings

Author	Source	Type	Date	Other

Nomenclature

Seen: The vulnerability was mentioned, discussed, or observed by the user.
Confirmed: The vulnerability has been validated from an analyst's perspective.
Published Proof of Concept: A public proof of concept is available for this vulnerability.
Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
Not confirmed: The user expressed doubt about the validity of the vulnerability.
Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.

Vulnerability timeline

Sightings and recorded dates, grouped by day · UTC

Order JSON

How durations are calculated

Following the VTEM framework (Black Hat USA 2015), time to patch starts when the vendor or a coordinator was informed, total time to patch at discovery, and disclosure to patch at public disclosure; vendor response time runs from the report to its acknowledgement. Time to exploit and time unpatched start at the earliest discovery or report, falling back to public disclosure. Unpatched time ends at the first recorded patch, or the calculation time when no patch is recorded. Exploitation to patch shows the interval between those two events; a published proof of concept is a public exploit, not exploitation.

Each result shows its source dates. A negative interval means the end event came first; when date-only inputs leave the order open, the result says so. Date-only inputs are approximate. The earliest evidence wins: KEV report dates and sightings are labelled as such. Records describing another vulnerability are listed but never calculated from, and a PoC alone does not establish exploitation. Missing patch evidence does not prove that no patch exists. Filters below change the event list only.

Publication & reservation Sightings KEV catalogs Other timestamps

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The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base model, served locally by ML-Gateway. They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.

Related by attack behaviour

Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.

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