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't 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's 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

Show details on NVD website

JSON

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         {
            metrics: [
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                  other: {
                     content: {
                        id: "CVE-2024-44955",
                        options: [
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                              Automatable: "no",
                           },
                           {
                              "Technical Impact": "partial",
                           },
                        ],
                        role: "CISA Coordinator",
                        timestamp: "2024-09-10T17:40:07.003970Z",
                        version: "2.0.3",
                     },
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               },
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            title: "CISA ADP Vulnrichment",
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               programFiles: [
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               ],
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                     lessThanOrEqual: "*",
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         ],
         descriptions: [
            {
               lang: "en",
               value: "In the Linux kernel, the following vulnerability has been resolved:\n\ndrm/amd/display: Don't 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's 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",
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      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",
}

All sightings related to this event Export sightings related to this event

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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