MSRC_CVE-2022-1158

Vulnerability from csaf_microsoft - Published: 2022-08-02 00:00 - Updated: 2022-08-16 00:00
Summary
A flaw was found in KVM. When updating a guest's page table entry vm_pgoff was improperly used as the offset to get the page's pfn. As vaddr and vm_pgoff are controllable by user-mode processes this flaw allows unprivileged local users on the host to write outside the userspace region and potentially corrupt the kernel resulting in a denial of service condition.

Notes

Additional Resources
To determine the support lifecycle for your software, see the Microsoft Support Lifecycle: https://support.microsoft.com/lifecycle
Disclaimer
The information provided in the Microsoft Knowledge Base is provided \"as is\" without warranty of any kind. Microsoft disclaims all warranties, either express or implied, including the warranties of merchantability and fitness for a particular purpose. In no event shall Microsoft Corporation or its suppliers be liable for any damages whatsoever including direct, indirect, incidental, consequential, loss of business profits or special damages, even if Microsoft Corporation or its suppliers have been advised of the possibility of such damages. Some states do not allow the exclusion or limitation of liability for consequential or incidental damages so the foregoing limitation may not apply.
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{
  "document": {
    "category": "csaf_vex",
    "csaf_version": "2.0",
    "distribution": {
      "text": "Public",
      "tlp": {
        "label": "WHITE",
        "url": "https://www.first.org/tlp/"
      }
    },
    "lang": "en-US",
    "notes": [
      {
        "category": "general",
        "text": "To determine the support lifecycle for your software, see the Microsoft Support Lifecycle: https://support.microsoft.com/lifecycle",
        "title": "Additional Resources"
      },
      {
        "category": "legal_disclaimer",
        "text": "The information provided in the Microsoft Knowledge Base is provided \\\"as is\\\" without warranty of any kind. Microsoft disclaims all warranties, either express or implied, including the warranties of merchantability and fitness for a particular purpose. In no event shall Microsoft Corporation or its suppliers be liable for any damages whatsoever including direct, indirect, incidental, consequential, loss of business profits or special damages, even if Microsoft Corporation or its suppliers have been advised of the possibility of such damages. Some states do not allow the exclusion or limitation of liability for consequential or incidental damages so the foregoing limitation may not apply.",
        "title": "Disclaimer"
      }
    ],
    "publisher": {
      "category": "vendor",
      "contact_details": "secure@microsoft.com",
      "name": "Microsoft Security Response Center",
      "namespace": "https://msrc.microsoft.com"
    },
    "references": [
      {
        "category": "self",
        "summary": "CVE-2022-1158 A flaw was found in KVM. When updating a guest\u0027s page table entry vm_pgoff was improperly used as the offset to get the page\u0027s pfn. As vaddr and vm_pgoff are controllable by user-mode processes this flaw allows unprivileged local users on the host to write outside the userspace region and potentially corrupt the kernel resulting in a denial of service condition. - VEX",
        "url": "https://msrc.microsoft.com/csaf/vex/2022/msrc_cve-2022-1158.json"
      },
      {
        "category": "external",
        "summary": "Microsoft Support Lifecycle",
        "url": "https://support.microsoft.com/lifecycle"
      },
      {
        "category": "external",
        "summary": "Common Vulnerability Scoring System",
        "url": "https://www.first.org/cvss"
      }
    ],
    "title": "A flaw was found in KVM. When updating a guest\u0027s page table entry vm_pgoff was improperly used as the offset to get the page\u0027s pfn. As vaddr and vm_pgoff are controllable by user-mode processes this flaw allows unprivileged local users on the host to write outside the userspace region and potentially corrupt the kernel resulting in a denial of service condition.",
    "tracking": {
      "current_release_date": "2022-08-16T00:00:00.000Z",
      "generator": {
        "date": "2025-10-19T23:51:07.179Z",
        "engine": {
          "name": "MSRC Generator",
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        }
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      "id": "msrc_CVE-2022-1158",
      "initial_release_date": "2022-08-02T00:00:00.000Z",
      "revision_history": [
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          "date": "2022-08-16T00:00:00.000Z",
          "legacy_version": "1",
          "number": "1",
          "summary": "Information published."
        }
      ],
      "status": "final",
      "version": "1"
    }
  },
  "product_tree": {
    "branches": [
      {
        "branches": [
          {
            "branches": [
              {
                "category": "product_version",
                "name": "1.0",
                "product": {
                  "name": "CBL Mariner 1.0",
                  "product_id": "16820"
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              },
              {
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                  "name": "CBL Mariner 2.0",
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              }
            ],
            "category": "product_name",
            "name": "Azure Linux"
          },
          {
            "branches": [
              {
                "category": "product_version_range",
                "name": "\u003ccm1 kernel 5.10.134.1-2",
                "product": {
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                }
              },
              {
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              },
              {
                "category": "product_version_range",
                "name": "\u003ccbl2 kernel 5.15.67.1-4",
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                }
              },
              {
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                }
              }
            ],
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          }
        ],
        "category": "vendor",
        "name": "Microsoft"
      }
    ],
    "relationships": [
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          "name": "\u003ccm1 kernel 5.10.134.1-2 as a component of CBL Mariner 1.0",
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  },
  "vulnerabilities": [
    {
      "cve": "CVE-2022-1158",
      "cwe": {
        "id": "CWE-416",
        "name": "Use After Free"
      },
      "notes": [
        {
          "category": "general",
          "text": "redhat",
          "title": "Assigning CNA"
        }
      ],
      "product_status": {
        "fixed": [
          "18638-16820",
          "18617-17086"
        ],
        "known_affected": [
          "16820-1",
          "17086-2"
        ]
      },
      "references": [
        {
          "category": "self",
          "summary": "CVE-2022-1158 A flaw was found in KVM. When updating a guest\u0027s page table entry vm_pgoff was improperly used as the offset to get the page\u0027s pfn. As vaddr and vm_pgoff are controllable by user-mode processes this flaw allows unprivileged local users on the host to write outside the userspace region and potentially corrupt the kernel resulting in a denial of service condition. - VEX",
          "url": "https://msrc.microsoft.com/csaf/vex/2022/msrc_cve-2022-1158.json"
        }
      ],
      "remediations": [
        {
          "category": "vendor_fix",
          "date": "2022-08-16T00:00:00.000Z",
          "details": "5.10.134.1-2:Security Update:https://learn.microsoft.com/en-us/azure/azure-linux/tutorial-azure-linux-upgrade",
          "product_ids": [
            "16820-1"
          ],
          "url": "https://learn.microsoft.com/en-us/azure/azure-linux/tutorial-azure-linux-upgrade"
        },
        {
          "category": "vendor_fix",
          "date": "2022-08-16T00:00:00.000Z",
          "details": "5.15.67.1-4:Security Update:https://learn.microsoft.com/en-us/azure/azure-linux/tutorial-azure-linux-upgrade",
          "product_ids": [
            "17086-2"
          ],
          "url": "https://learn.microsoft.com/en-us/azure/azure-linux/tutorial-azure-linux-upgrade"
        }
      ],
      "scores": [
        {
          "cvss_v3": {
            "attackComplexity": "LOW",
            "attackVector": "LOCAL",
            "availabilityImpact": "HIGH",
            "baseScore": 7.8,
            "baseSeverity": "HIGH",
            "confidentialityImpact": "HIGH",
            "environmentalsScore": 0.0,
            "integrityImpact": "HIGH",
            "privilegesRequired": "LOW",
            "scope": "UNCHANGED",
            "temporalScore": 7.8,
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
            "version": "3.1"
          },
          "products": [
            "16820-1",
            "17086-2"
          ]
        }
      ],
      "title": "A flaw was found in KVM. When updating a guest\u0027s page table entry vm_pgoff was improperly used as the offset to get the page\u0027s pfn. As vaddr and vm_pgoff are controllable by user-mode processes this flaw allows unprivileged local users on the host to write outside the userspace region and potentially corrupt the kernel resulting in a denial of service condition."
    }
  ]
}


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Sightings

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  • 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.
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  • 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.



Detection rules are retrieved from Rulezet.