MSRC_CVE-2023-31084

Vulnerability from csaf_microsoft - Published: 2023-04-01 00:00 - Updated: 2024-12-03 00:00
Summary
An issue was discovered in drivers/media/dvb-core/dvb_frontend.c in the Linux kernel 6.2. There is a blocking operation when a task is in !TASK_RUNNING. In dvb_frontend_get_event wait_event_interruptible is called; the condition is dvb_frontend_test_event(feprivevents). In dvb_frontend_test_event down(&fepriv->sem) is called. However wait_event_interruptible would put the process to sleep and down(&fepriv->sem) may block the process.

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.
To clipboard 

{
  "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-2023-31084 An issue was discovered in drivers/media/dvb-core/dvb_frontend.c in the Linux kernel 6.2. There is a blocking operation when a task is in !TASK_RUNNING. In dvb_frontend_get_event wait_event_interruptible is called; the condition is dvb_frontend_test_event(feprivevents). In dvb_frontend_test_event down(\u0026fepriv-\u003esem) is called. However wait_event_interruptible would put the process to sleep and down(\u0026fepriv-\u003esem) may block the process. - VEX",
        "url": "https://msrc.microsoft.com/csaf/vex/2023/msrc_cve-2023-31084.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": "An issue was discovered in drivers/media/dvb-core/dvb_frontend.c in the Linux kernel 6.2. There is a blocking operation when a task is in !TASK_RUNNING. In dvb_frontend_get_event wait_event_interruptible is called; the condition is dvb_frontend_test_event(feprivevents). In dvb_frontend_test_event down(\u0026fepriv-\u003esem) is called. However wait_event_interruptible would put the process to sleep and down(\u0026fepriv-\u003esem) may block the process.",
    "tracking": {
      "current_release_date": "2024-12-03T00:00:00.000Z",
      "generator": {
        "date": "2025-10-20T00:24:23.681Z",
        "engine": {
          "name": "MSRC Generator",
          "version": "1.0"
        }
      },
      "id": "msrc_CVE-2023-31084",
      "initial_release_date": "2023-04-01T00:00:00.000Z",
      "revision_history": [
        {
          "date": "2023-09-01T00:00:00.000Z",
          "legacy_version": "1",
          "number": "1",
          "summary": "Information published."
        },
        {
          "date": "2024-08-15T00:00:00.000Z",
          "legacy_version": "1.1",
          "number": "2",
          "summary": "Information published."
        },
        {
          "date": "2024-10-05T00:00:00.000Z",
          "legacy_version": "1.2",
          "number": "3",
          "summary": "Information published."
        },
        {
          "date": "2024-10-06T00:00:00.000Z",
          "legacy_version": "1.3",
          "number": "4",
          "summary": "Information published."
        },
        {
          "date": "2024-10-07T00:00:00.000Z",
          "legacy_version": "1.4",
          "number": "5",
          "summary": "Information published."
        },
        {
          "date": "2024-10-08T00:00:00.000Z",
          "legacy_version": "1.5",
          "number": "6",
          "summary": "Information published."
        },
        {
          "date": "2024-10-09T00:00:00.000Z",
          "legacy_version": "1.6",
          "number": "7",
          "summary": "Information published."
        },
        {
          "date": "2024-10-10T00:00:00.000Z",
          "legacy_version": "1.7",
          "number": "8",
          "summary": "Information published."
        },
        {
          "date": "2024-10-11T00:00:00.000Z",
          "legacy_version": "1.8",
          "number": "9",
          "summary": "Information published."
        },
        {
          "date": "2024-10-12T00:00:00.000Z",
          "legacy_version": "1.9",
          "number": "10",
          "summary": "Information published."
        },
        {
          "date": "2024-12-03T00:00:00.000Z",
          "legacy_version": "2",
          "number": "11",
          "summary": "Added hyperv-daemons to CBL-Mariner 2.0\nAdded hyperv-daemons to Azure Linux 3.0"
        }
      ],
      "status": "final",
      "version": "11"
    }
  },
  "product_tree": {
    "branches": [
      {
        "branches": [
          {
            "branches": [
              {
                "category": "product_version",
                "name": "2.0",
                "product": {
                  "name": "CBL Mariner 2.0",
                  "product_id": "17086"
                }
              },
              {
                "category": "product_version",
                "name": "3.0",
                "product": {
                  "name": "Azure Linux 3.0",
                  "product_id": "17084"
                }
              }
            ],
            "category": "product_name",
            "name": "Azure Linux"
          },
          {
            "branches": [
              {
                "category": "product_version_range",
                "name": "\u003ccbl2 hyperv-daemons 5.15.158.2-1",
                "product": {
                  "name": "\u003ccbl2 hyperv-daemons 5.15.158.2-1",
                  "product_id": "2"
                }
              },
              {
                "category": "product_version",
                "name": "cbl2 hyperv-daemons 5.15.158.2-1",
                "product": {
                  "name": "cbl2 hyperv-daemons 5.15.158.2-1",
                  "product_id": "17328"
                }
              },
              {
                "category": "product_version_range",
                "name": "\u003cazl3 hyperv-daemons 6.6.35.1-1",
                "product": {
                  "name": "\u003cazl3 hyperv-daemons 6.6.35.1-1",
                  "product_id": "3"
                }
              },
              {
                "category": "product_version",
                "name": "azl3 hyperv-daemons 6.6.35.1-1",
                "product": {
                  "name": "azl3 hyperv-daemons 6.6.35.1-1",
                  "product_id": "16989"
                }
              },
              {
                "category": "product_version_range",
                "name": "\u003cazl3 hyperv-daemons 6.6.47.1-1",
                "product": {
                  "name": "\u003cazl3 hyperv-daemons 6.6.47.1-1",
                  "product_id": "1"
                }
              },
              {
                "category": "product_version",
                "name": "azl3 hyperv-daemons 6.6.47.1-1",
                "product": {
                  "name": "azl3 hyperv-daemons 6.6.47.1-1",
                  "product_id": "19791"
                }
              }
            ],
            "category": "product_name",
            "name": "hyperv-daemons"
          }
        ],
        "category": "vendor",
        "name": "Microsoft"
      }
    ],
    "relationships": [
      {
        "category": "default_component_of",
        "full_product_name": {
          "name": "\u003ccbl2 hyperv-daemons 5.15.158.2-1 as a component of CBL Mariner 2.0",
          "product_id": "17086-2"
        },
        "product_reference": "2",
        "relates_to_product_reference": "17086"
      },
      {
        "category": "default_component_of",
        "full_product_name": {
          "name": "cbl2 hyperv-daemons 5.15.158.2-1 as a component of CBL Mariner 2.0",
          "product_id": "17328-17086"
        },
        "product_reference": "17328",
        "relates_to_product_reference": "17086"
      },
      {
        "category": "default_component_of",
        "full_product_name": {
          "name": "\u003cazl3 hyperv-daemons 6.6.35.1-1 as a component of Azure Linux 3.0",
          "product_id": "17084-3"
        },
        "product_reference": "3",
        "relates_to_product_reference": "17084"
      },
      {
        "category": "default_component_of",
        "full_product_name": {
          "name": "azl3 hyperv-daemons 6.6.35.1-1 as a component of Azure Linux 3.0",
          "product_id": "16989-17084"
        },
        "product_reference": "16989",
        "relates_to_product_reference": "17084"
      },
      {
        "category": "default_component_of",
        "full_product_name": {
          "name": "\u003cazl3 hyperv-daemons 6.6.47.1-1 as a component of Azure Linux 3.0",
          "product_id": "17084-1"
        },
        "product_reference": "1",
        "relates_to_product_reference": "17084"
      },
      {
        "category": "default_component_of",
        "full_product_name": {
          "name": "azl3 hyperv-daemons 6.6.47.1-1 as a component of Azure Linux 3.0",
          "product_id": "19791-17084"
        },
        "product_reference": "19791",
        "relates_to_product_reference": "17084"
      }
    ]
  },
  "vulnerabilities": [
    {
      "cve": "CVE-2023-31084",
      "notes": [
        {
          "category": "general",
          "text": "mitre",
          "title": "Assigning CNA"
        }
      ],
      "product_status": {
        "fixed": [
          "17328-17086",
          "16989-17084",
          "19791-17084"
        ],
        "known_affected": [
          "17086-2",
          "17084-3",
          "17084-1"
        ]
      },
      "references": [
        {
          "category": "self",
          "summary": "CVE-2023-31084 An issue was discovered in drivers/media/dvb-core/dvb_frontend.c in the Linux kernel 6.2. There is a blocking operation when a task is in !TASK_RUNNING. In dvb_frontend_get_event wait_event_interruptible is called; the condition is dvb_frontend_test_event(feprivevents). In dvb_frontend_test_event down(\u0026fepriv-\u003esem) is called. However wait_event_interruptible would put the process to sleep and down(\u0026fepriv-\u003esem) may block the process. - VEX",
          "url": "https://msrc.microsoft.com/csaf/vex/2023/msrc_cve-2023-31084.json"
        }
      ],
      "remediations": [
        {
          "category": "vendor_fix",
          "date": "2023-09-01T00:00:00.000Z",
          "details": "5.15.158.2-1: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"
        },
        {
          "category": "vendor_fix",
          "date": "2023-09-01T00:00:00.000Z",
          "details": "6.6.35.1-1:Security Update:https://learn.microsoft.com/en-us/azure/azure-linux/tutorial-azure-linux-upgrade",
          "product_ids": [
            "17084-3",
            "17084-1"
          ],
          "url": "https://learn.microsoft.com/en-us/azure/azure-linux/tutorial-azure-linux-upgrade"
        }
      ],
      "scores": [
        {
          "cvss_v3": {
            "attackComplexity": "LOW",
            "attackVector": "LOCAL",
            "availabilityImpact": "HIGH",
            "baseScore": 5.5,
            "baseSeverity": "MEDIUM",
            "confidentialityImpact": "NONE",
            "environmentalsScore": 0.0,
            "integrityImpact": "NONE",
            "privilegesRequired": "LOW",
            "scope": "UNCHANGED",
            "temporalScore": 5.5,
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
            "version": "3.1"
          },
          "products": [
            "17086-2",
            "17084-3",
            "17084-1"
          ]
        }
      ],
      "title": "An issue was discovered in drivers/media/dvb-core/dvb_frontend.c in the Linux kernel 6.2. There is a blocking operation when a task is in !TASK_RUNNING. In dvb_frontend_get_event wait_event_interruptible is called; the condition is dvb_frontend_test_event(feprivevents). In dvb_frontend_test_event down(\u0026fepriv-\u003esem) is called. However wait_event_interruptible would put the process to sleep and down(\u0026fepriv-\u003esem) may block the process."
    }
  ]
}


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 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.



Detection rules are retrieved from Rulezet.