CVE-2024-26990 (GCVE-0-2024-26990)
Vulnerability from cvelistv5
Published
2024-05-01 05:27
Modified
2025-11-04 17:15
Severity ?
Summary
In the Linux kernel, the following vulnerability has been resolved: KVM: x86/mmu: Write-protect L2 SPTEs in TDP MMU when clearing dirty status Check kvm_mmu_page_ad_need_write_protect() when deciding whether to write-protect or clear D-bits on TDP MMU SPTEs, so that the TDP MMU accounts for any role-specific reasons for disabling D-bit dirty logging. Specifically, TDP MMU SPTEs must be write-protected when the TDP MMU is being used to run an L2 (i.e. L1 has disabled EPT) and PML is enabled. KVM always disables PML when running L2, even when L1 and L2 GPAs are in the some domain, so failing to write-protect TDP MMU SPTEs will cause writes made by L2 to not be reflected in the dirty log. [sean: massage shortlog and changelog, tweak ternary op formatting]
References
Impacted products
Vendor Product Version
Linux Linux Version: 5982a5392663b30f57ee90b0372c19a7e9cb655a
Version: 5982a5392663b30f57ee90b0372c19a7e9cb655a
Version: 5982a5392663b30f57ee90b0372c19a7e9cb655a
 Create a notification for this product.
Show details on NVD website

To clipboard 

{
  "containers": {
    "adp": [
      {
        "metrics": [
          {
            "other": {
              "content": {
                "id": "CVE-2024-26990",
                "options": [
                  {
                    "Exploitation": "none"
                  },
                  {
                    "Automatable": "no"
                  },
                  {
                    "Technical Impact": "partial"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2024-06-14T20:04:24.835393Z",
                "version": "2.0.3"
              },
              "type": "ssvc"
            }
          }
        ],
        "providerMetadata": {
          "dateUpdated": "2024-06-14T20:04:34.681Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "title": "CISA ADP Vulnrichment"
      },
      {
        "providerMetadata": {
          "dateUpdated": "2025-11-04T17:15:35.930Z",
          "orgId": "af854a3a-2127-422b-91ae-364da2661108",
          "shortName": "CVE"
        },
        "references": [
          {
            "tags": [
              "x_transferred"
            ],
            "url": "https://git.kernel.org/stable/c/cdf811a937471af2d1facdf8ae80e5e68096f1ed"
          },
          {
            "tags": [
              "x_transferred"
            ],
            "url": "https://git.kernel.org/stable/c/e20bff0f1b2de9cfe303dd35ff46470104a87404"
          },
          {
            "tags": [
              "x_transferred"
            ],
            "url": "https://git.kernel.org/stable/c/2673dfb591a359c75080dd5af3da484b89320d22"
          },
          {
            "url": "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/DAMSOZXJEPUOXW33WZYWCVAY7Z5S7OOY/"
          },
          {
            "url": "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/4EZ6PJW7VOZ224TD7N4JZNU6KV32ZJ53/"
          },
          {
            "url": "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/GCBZZEC7L7KTWWAS2NLJK6SO3IZIL4WW/"
          }
        ],
        "title": "CVE Program Container"
      }
    ],
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "arch/x86/kvm/mmu/tdp_mmu.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThan": "cdf811a937471af2d1facdf8ae80e5e68096f1ed",
              "status": "affected",
              "version": "5982a5392663b30f57ee90b0372c19a7e9cb655a",
              "versionType": "git"
            },
            {
              "lessThan": "e20bff0f1b2de9cfe303dd35ff46470104a87404",
              "status": "affected",
              "version": "5982a5392663b30f57ee90b0372c19a7e9cb655a",
              "versionType": "git"
            },
            {
              "lessThan": "2673dfb591a359c75080dd5af3da484b89320d22",
              "status": "affected",
              "version": "5982a5392663b30f57ee90b0372c19a7e9cb655a",
              "versionType": "git"
            }
          ]
        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "arch/x86/kvm/mmu/tdp_mmu.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "6.4"
            },
            {
              "lessThan": "6.4",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.6.*",
              "status": "unaffected",
              "version": "6.6.29",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.8.*",
              "status": "unaffected",
              "version": "6.8.8",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "6.9",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "cpeApplicability": [
        {
          "nodes": [
            {
              "cpeMatch": [
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.6.29",
                  "versionStartIncluding": "6.4",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.8.8",
                  "versionStartIncluding": "6.4",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.9",
                  "versionStartIncluding": "6.4",
                  "vulnerable": true
                }
              ],
              "negate": false,
              "operator": "OR"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nKVM: x86/mmu: Write-protect L2 SPTEs in TDP MMU when clearing dirty status\n\nCheck kvm_mmu_page_ad_need_write_protect() when deciding whether to\nwrite-protect or clear D-bits on TDP MMU SPTEs, so that the TDP MMU\naccounts for any role-specific reasons for disabling D-bit dirty logging.\n\nSpecifically, TDP MMU SPTEs must be write-protected when the TDP MMU is\nbeing used to run an L2 (i.e. L1 has disabled EPT) and PML is enabled.\nKVM always disables PML when running L2, even when L1 and L2 GPAs are in\nthe some domain, so failing to write-protect TDP MMU SPTEs will cause\nwrites made by L2 to not be reflected in the dirty log.\n\n[sean: massage shortlog and changelog, tweak ternary op formatting]"
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2025-05-04T09:01:37.440Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
        {
          "url": "https://git.kernel.org/stable/c/cdf811a937471af2d1facdf8ae80e5e68096f1ed"
        },
        {
          "url": "https://git.kernel.org/stable/c/e20bff0f1b2de9cfe303dd35ff46470104a87404"
        },
        {
          "url": "https://git.kernel.org/stable/c/2673dfb591a359c75080dd5af3da484b89320d22"
        }
      ],
      "title": "KVM: x86/mmu: Write-protect L2 SPTEs in TDP MMU when clearing dirty status",
      "x_generator": {
        "engine": "bippy-1.2.0"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2024-26990",
    "datePublished": "2024-05-01T05:27:48.810Z",
    "dateReserved": "2024-02-19T14:20:24.205Z",
    "dateUpdated": "2025-11-04T17:15:35.930Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2",
  "vulnerability-lookup:meta": {
    "vulnrichment": {
      "containers": "{\"adp\": [{\"title\": \"CVE Program Container\", \"references\": [{\"url\": \"https://git.kernel.org/stable/c/cdf811a937471af2d1facdf8ae80e5e68096f1ed\", \"tags\": [\"x_transferred\"]}, {\"url\": \"https://git.kernel.org/stable/c/e20bff0f1b2de9cfe303dd35ff46470104a87404\", \"tags\": [\"x_transferred\"]}, {\"url\": \"https://git.kernel.org/stable/c/2673dfb591a359c75080dd5af3da484b89320d22\", \"tags\": [\"x_transferred\"]}], \"providerMetadata\": {\"orgId\": \"af854a3a-2127-422b-91ae-364da2661108\", \"shortName\": \"CVE\", \"dateUpdated\": \"2024-08-02T00:21:05.915Z\"}}, {\"title\": \"CISA ADP Vulnrichment\", \"metrics\": [{\"other\": {\"type\": \"ssvc\", \"content\": {\"id\": \"CVE-2024-26990\", \"role\": \"CISA Coordinator\", \"options\": [{\"Exploitation\": \"none\"}, {\"Automatable\": \"no\"}, {\"Technical Impact\": \"partial\"}], \"version\": \"2.0.3\", \"timestamp\": \"2024-06-14T20:04:24.835393Z\"}}}], \"providerMetadata\": {\"orgId\": \"134c704f-9b21-4f2e-91b3-4a467353bcc0\", \"shortName\": \"CISA-ADP\", \"dateUpdated\": \"2024-06-14T20:04:31.930Z\"}}], \"cna\": {\"title\": \"KVM: x86/mmu: Write-protect L2 SPTEs in TDP MMU when clearing dirty status\", \"affected\": [{\"repo\": \"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\", \"vendor\": \"Linux\", \"product\": \"Linux\", \"versions\": [{\"status\": \"affected\", \"version\": \"5982a5392663b30f57ee90b0372c19a7e9cb655a\", \"lessThan\": \"cdf811a937471af2d1facdf8ae80e5e68096f1ed\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"5982a5392663b30f57ee90b0372c19a7e9cb655a\", \"lessThan\": \"e20bff0f1b2de9cfe303dd35ff46470104a87404\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"5982a5392663b30f57ee90b0372c19a7e9cb655a\", \"lessThan\": \"2673dfb591a359c75080dd5af3da484b89320d22\", \"versionType\": \"git\"}], \"programFiles\": [\"arch/x86/kvm/mmu/tdp_mmu.c\"], \"defaultStatus\": \"unaffected\"}, {\"repo\": \"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\", \"vendor\": \"Linux\", \"product\": \"Linux\", \"versions\": [{\"status\": \"affected\", \"version\": \"6.4\"}, {\"status\": \"unaffected\", \"version\": \"0\", \"lessThan\": \"6.4\", \"versionType\": \"semver\"}, {\"status\": \"unaffected\", \"version\": \"6.6.29\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"6.6.*\"}, {\"status\": \"unaffected\", \"version\": \"6.8.8\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"6.8.*\"}, {\"status\": \"unaffected\", \"version\": \"6.9\", \"versionType\": \"original_commit_for_fix\", \"lessThanOrEqual\": \"*\"}], \"programFiles\": [\"arch/x86/kvm/mmu/tdp_mmu.c\"], \"defaultStatus\": \"affected\"}], \"references\": [{\"url\": \"https://git.kernel.org/stable/c/cdf811a937471af2d1facdf8ae80e5e68096f1ed\"}, {\"url\": \"https://git.kernel.org/stable/c/e20bff0f1b2de9cfe303dd35ff46470104a87404\"}, {\"url\": \"https://git.kernel.org/stable/c/2673dfb591a359c75080dd5af3da484b89320d22\"}], \"x_generator\": {\"engine\": \"bippy-1.2.0\"}, \"descriptions\": [{\"lang\": \"en\", \"value\": \"In the Linux kernel, the following vulnerability has been resolved:\\n\\nKVM: x86/mmu: Write-protect L2 SPTEs in TDP MMU when clearing dirty status\\n\\nCheck kvm_mmu_page_ad_need_write_protect() when deciding whether to\\nwrite-protect or clear D-bits on TDP MMU SPTEs, so that the TDP MMU\\naccounts for any role-specific reasons for disabling D-bit dirty logging.\\n\\nSpecifically, TDP MMU SPTEs must be write-protected when the TDP MMU is\\nbeing used to run an L2 (i.e. L1 has disabled EPT) and PML is enabled.\\nKVM always disables PML when running L2, even when L1 and L2 GPAs are in\\nthe some domain, so failing to write-protect TDP MMU SPTEs will cause\\nwrites made by L2 to not be reflected in the dirty log.\\n\\n[sean: massage shortlog and changelog, tweak ternary op formatting]\"}], \"cpeApplicability\": [{\"nodes\": [{\"negate\": false, \"cpeMatch\": [{\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"6.6.29\", \"versionStartIncluding\": \"6.4\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"6.8.8\", \"versionStartIncluding\": \"6.4\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"6.9\", \"versionStartIncluding\": \"6.4\"}], \"operator\": \"OR\"}]}], \"providerMetadata\": {\"orgId\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\", \"shortName\": \"Linux\", \"dateUpdated\": \"2025-05-04T09:01:37.440Z\"}}}",
      "cveMetadata": "{\"cveId\": \"CVE-2024-26990\", \"state\": \"PUBLISHED\", \"dateUpdated\": \"2025-05-04T09:01:37.440Z\", \"dateReserved\": \"2024-02-19T14:20:24.205Z\", \"assignerOrgId\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\", \"datePublished\": \"2024-05-01T05:27:48.810Z\", \"assignerShortName\": \"Linux\"}",
      "dataType": "CVE_RECORD",
      "dataVersion": "5.1"
    }
  }
}


Log in or create an account to share your comment.




Tags
Taxonomy of the tags.




Sightings

Author Source Type Date

Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or seen somewhere by the user.
  • Confirmed: The vulnerability is confirmed from an analyst perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
  • Exploited: This vulnerability was exploited and seen by the user reporting the sighting.
  • Patched: This vulnerability was successfully patched by the user reporting the sighting.
  • Not exploited: This vulnerability was not exploited or seen by the user reporting the sighting.
  • Not confirmed: The user expresses doubt about the veracity of the vulnerability.
  • Not patched: This vulnerability was not successfully patched by the user reporting the sighting.