github - ghsa-qcm7-vmfg-h8xw

ghsa-qcm7-vmfg-h8xw

Vulnerability from github

Published

2024-09-04 21:30

Modified

2024-12-09 15:31

Severity ?

5.5 (Medium) - CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Details

In the Linux kernel, the following vulnerability has been resolved:

drm/amd/display: Don't refer to dc_sink in is_dsc_need_re_compute

[Why] When unplug one of monitors connected after mst hub, encounter null pointer dereference.

It's due to dc_sink get released immediately in early_unregister() or detect_ctx(). When commit new state which directly referring to info stored in dc_sink will cause null pointer dereference.

[how] Remove redundant checking condition. Relevant condition should already be covered by checking if dsc_aux is null or not. Also reset dsc_aux to NULL when the connector is disconnected.

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{
  "affected": [],
  "aliases": [
    "CVE-2024-44955"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-476"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2024-09-04T19:15:30Z",
    "severity": "MODERATE"
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\ndrm/amd/display: Don\u0027t refer to dc_sink in is_dsc_need_re_compute\n\n[Why]\nWhen unplug one of monitors connected after mst hub, encounter null pointer dereference.\n\nIt\u0027s due to dc_sink get released immediately in early_unregister() or detect_ctx(). When\ncommit new state which directly referring to info stored in dc_sink will cause null pointer\ndereference.\n\n[how]\nRemove redundant checking condition. Relevant condition should already be covered by checking\nif dsc_aux is null or not. Also reset dsc_aux to NULL when the connector is disconnected.",
  "id": "GHSA-qcm7-vmfg-h8xw",
  "modified": "2024-12-09T15:31:33Z",
  "published": "2024-09-04T21:30:31Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2024-44955"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/39b217193729aa45eded8de24d9245468a0c0263"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/c7e65cab54a89f4df54110f0b44c4ade93d1a911"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/fcf6a49d79923a234844b8efe830a61f3f0584e4"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
      "type": "CVSS_V3"
    }
  ]
}

cve-2024-44955

Vulnerability from cvelistv5

Published

2024-09-04 18:35

Modified

2024-12-19 09:19

Severity ?

Summary

In the Linux kernel, the following vulnerability has been resolved: drm/amd/display: Don't refer to dc_sink in is_dsc_need_re_compute [Why] When unplug one of monitors connected after mst hub, encounter null pointer dereference. It's due to dc_sink get released immediately in early_unregister() or detect_ctx(). When commit new state which directly referring to info stored in dc_sink will cause null pointer dereference. [how] Remove redundant checking condition. Relevant condition should already be covered by checking if dsc_aux is null or not. Also reset dsc_aux to NULL when the connector is disconnected.

References

▼	URL	Tags
	https://git.kernel.org/stable/c/c7e65cab54a89f4df54110f0b44c4ade93d1a911
	https://git.kernel.org/stable/c/39b217193729aa45eded8de24d9245468a0c0263
	https://git.kernel.org/stable/c/fcf6a49d79923a234844b8efe830a61f3f0584e4

Impacted products

Vendor

Product

Version

▼

Linux

Version: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2
Version: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2
Version: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2

Linux

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{
  "containers": {
    "adp": [
      {
        "metrics": [
          {
            "other": {
              "content": {
                "id": "CVE-2024-44955",
                "options": [
                  {
                    "Exploitation": "none"
                  },
                  {
                    "Automatable": "no"
                  },
                  {
                    "Technical Impact": "partial"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2024-09-10T17:40:07.003970Z",
                "version": "2.0.3"
              },
              "type": "ssvc"
            }
          }
        ],
        "providerMetadata": {
          "dateUpdated": "2024-09-12T17:33:36.595Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "title": "CISA ADP Vulnrichment"
      }
    ],
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_mst_types.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThan": "c7e65cab54a89f4df54110f0b44c4ade93d1a911",
              "status": "affected",
              "version": "1da177e4c3f41524e886b7f1b8a0c1fc7321cac2",
              "versionType": "git"
            },
            {
              "lessThan": "39b217193729aa45eded8de24d9245468a0c0263",
              "status": "affected",
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              "lessThan": "fcf6a49d79923a234844b8efe830a61f3f0584e4",
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              "versionType": "git"
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          ]
        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_mst_types.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThanOrEqual": "6.6.*",
              "status": "unaffected",
              "version": "6.6.64",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.10.*",
              "status": "unaffected",
              "version": "6.10.5",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "6.11",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\ndrm/amd/display: Don\u0027t refer to dc_sink in is_dsc_need_re_compute\n\n[Why]\nWhen unplug one of monitors connected after mst hub, encounter null pointer dereference.\n\nIt\u0027s due to dc_sink get released immediately in early_unregister() or detect_ctx(). When\ncommit new state which directly referring to info stored in dc_sink will cause null pointer\ndereference.\n\n[how]\nRemove redundant checking condition. Relevant condition should already be covered by checking\nif dsc_aux is null or not. Also reset dsc_aux to NULL when the connector is disconnected."
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2024-12-19T09:19:03.846Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
        {
          "url": "https://git.kernel.org/stable/c/c7e65cab54a89f4df54110f0b44c4ade93d1a911"
        },
        {
          "url": "https://git.kernel.org/stable/c/39b217193729aa45eded8de24d9245468a0c0263"
        },
        {
          "url": "https://git.kernel.org/stable/c/fcf6a49d79923a234844b8efe830a61f3f0584e4"
        }
      ],
      "title": "drm/amd/display: Don\u0027t refer to dc_sink in is_dsc_need_re_compute",
      "x_generator": {
        "engine": "bippy-5f407fcff5a0"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2024-44955",
    "datePublished": "2024-09-04T18:35:54.412Z",
    "dateReserved": "2024-08-21T05:34:56.666Z",
    "dateUpdated": "2024-12-19T09:19:03.846Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.1"
}

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.
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.

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