Vulnerability-Lookup

GHSA-9X94-VH8X-VRHP

Vulnerability from github – Published: 2025-01-11 15:30 – Updated: 2025-11-03 21:32

Details

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

drm/dp_mst: Ensure mst_primary pointer is valid in drm_dp_mst_handle_up_req()

While receiving an MST up request message from one thread in drm_dp_mst_handle_up_req(), the MST topology could be removed from another thread via drm_dp_mst_topology_mgr_set_mst(false), freeing mst_primary and setting drm_dp_mst_topology_mgr::mst_primary to NULL. This could lead to a NULL deref/use-after-free of mst_primary in drm_dp_mst_handle_up_req().

Avoid the above by holding a reference for mst_primary in drm_dp_mst_handle_up_req() while it's used.

v2: Fix kfreeing the request if getting an mst_primary reference fails.

Severity ?

7.8 (High)


                  
                    CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

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{
  "affected": [],
  "aliases": [
    "CVE-2024-57798"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-416",
      "CWE-476"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2025-01-11T13:15:29Z",
    "severity": "HIGH"
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\ndrm/dp_mst: Ensure mst_primary pointer is valid in drm_dp_mst_handle_up_req()\n\nWhile receiving an MST up request message from one thread in\ndrm_dp_mst_handle_up_req(), the MST topology could be removed from\nanother thread via drm_dp_mst_topology_mgr_set_mst(false), freeing\nmst_primary and setting drm_dp_mst_topology_mgr::mst_primary to NULL.\nThis could lead to a NULL deref/use-after-free of mst_primary in\ndrm_dp_mst_handle_up_req().\n\nAvoid the above by holding a reference for mst_primary in\ndrm_dp_mst_handle_up_req() while it\u0027s used.\n\nv2: Fix kfreeing the request if getting an mst_primary reference fails.",
  "id": "GHSA-9x94-vh8x-vrhp",
  "modified": "2025-11-03T21:32:07Z",
  "published": "2025-01-11T15:30:29Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2024-57798"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/9735d40f5fde9970aa46e828ecc85c32571d58a2"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/ce55818b2d3a999f886af91679589e4644ff1dc8"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/e54b00086f7473dbda1a7d6fc47720ced157c6a8"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/f61b2e5e7821f868d6afc22382a66a30ee780ba0"
    },
    {
      "type": "WEB",
      "url": "https://lists.debian.org/debian-lts-announce/2025/03/msg00001.html"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
      "type": "CVSS_V3"
    }
  ]
}

CVE-2024-57798 (GCVE-0-2024-57798)

Vulnerability from cvelistv5 – Published: 2025-01-11 12:39 – Updated: 2026-05-11 20:59

Title

drm/dp_mst: Ensure mst_primary pointer is valid in drm_dp_mst_handle_up_req()

Summary

In the Linux kernel, the following vulnerability has been resolved: drm/dp_mst: Ensure mst_primary pointer is valid in drm_dp_mst_handle_up_req() While receiving an MST up request message from one thread in drm_dp_mst_handle_up_req(), the MST topology could be removed from another thread via drm_dp_mst_topology_mgr_set_mst(false), freeing mst_primary and setting drm_dp_mst_topology_mgr::mst_primary to NULL. This could lead to a NULL deref/use-after-free of mst_primary in drm_dp_mst_handle_up_req(). Avoid the above by holding a reference for mst_primary in drm_dp_mst_handle_up_req() while it's used. v2: Fix kfreeing the request if getting an mst_primary reference fails.

Severity ?

7.8 (High)


                        
                          CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

CWE

CWE-476 - NULL Pointer Dereference

Assigner

Linux

References

URL

Tags

	https://git.kernel.org/stable/c/f61b2e5e7821f868d…
	https://git.kernel.org/stable/c/9735d40f5fde9970a…
	https://git.kernel.org/stable/c/ce55818b2d3a999f8…
	https://git.kernel.org/stable/c/e54b00086f7473dbd…

Impacted products

Vendor

Product

Version

Linux

Affected: 9408cc94eb041d0c2f9f00189a613b94c0449450 , < f61b2e5e7821f868d6afc22382a66a30ee780ba0 (git)
Affected: 9408cc94eb041d0c2f9f00189a613b94c0449450 , < 9735d40f5fde9970aa46e828ecc85c32571d58a2 (git)
Affected: 9408cc94eb041d0c2f9f00189a613b94c0449450 , < ce55818b2d3a999f886af91679589e4644ff1dc8 (git)
Affected: 9408cc94eb041d0c2f9f00189a613b94c0449450 , < e54b00086f7473dbda1a7d6fc47720ced157c6a8 (git)

Linux

Affected: 5.5
Unaffected: 0 , < 5.5 (semver)
Unaffected: 6.1.123 , ≤ 6.1.* (semver)
Unaffected: 6.6.69 , ≤ 6.6.* (semver)
Unaffected: 6.12.8 , ≤ 6.12.* (semver)
Unaffected: 6.13 , ≤ * (original_commit_for_fix)

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JSON

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              "baseSeverity": "HIGH",
              "confidentialityImpact": "HIGH",
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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.

Action not permitted

GHSA-9X94-VH8X-VRHP

CVE-2024-57798 (GCVE-0-2024-57798)

Tags

Sightings

Nomenclature