github - ghsa-j36m-8cr4-5cq4

GHSA-J36M-8CR4-5CQ4

Vulnerability from github – Published: 2025-05-09 09:33 – Updated: 2025-11-12 21:31

Details

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

drm/amd/display: prevent hang on link training fail

[Why] When link training fails, the phy clock will be disabled. However, in enable_streams, it is assumed that link training succeeded and the mux selects the phy clock, causing a hang when a register write is made.

[How] When enable_stream is hit, check if link training failed. If it did, fall back to the ref clock to avoid a hang and keep the system in a recoverable state.

Severity ?

5.5 (Medium)


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

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{
  "affected": [],
  "aliases": [
    "CVE-2025-37870"
  ],
  "database_specific": {
    "cwe_ids": [],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2025-05-09T07:16:08Z",
    "severity": "MODERATE"
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\ndrm/amd/display: prevent hang on link training fail\n\n[Why]\nWhen link training fails, the phy clock will be disabled. However, in\nenable_streams, it is assumed that link training succeeded and the\nmux selects the phy clock, causing a hang when a register write is made.\n\n[How]\nWhen enable_stream is hit, check if link training failed. If it did, fall\nback to the ref clock to avoid a hang and keep the system in a recoverable\nstate.",
  "id": "GHSA-j36m-8cr4-5cq4",
  "modified": "2025-11-12T21:31:02Z",
  "published": "2025-05-09T09:33:20Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2025-37870"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/0363c03672cd3191f037905bf981eb523a3b71b1"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/04bf4f2a497e9877c425c5124652e61fb8a1a0aa"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/8058061ed9d6bc259d1e678607b07d259342c08f"
    }
  ],
  "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-2025-37870 (GCVE-0-2025-37870)

Vulnerability from cvelistv5 – Published: 2025-05-09 06:43 – Updated: 2025-09-03 13:06

Summary

In the Linux kernel, the following vulnerability has been resolved: drm/amd/display: prevent hang on link training fail [Why] When link training fails, the phy clock will be disabled. However, in enable_streams, it is assumed that link training succeeded and the mux selects the phy clock, causing a hang when a register write is made. [How] When enable_stream is hit, check if link training failed. If it did, fall back to the ref clock to avoid a hang and keep the system in a recoverable state.

Severity ?

No CVSS data available.

Assigner

Linux

References

URL

Tags

	https://git.kernel.org/stable/c/0363c03672cd3191f…
	https://git.kernel.org/stable/c/04bf4f2a497e9877c…
	https://git.kernel.org/stable/c/8058061ed9d6bc259…

Impacted products

Vendor

Product

Version

Linux

Affected: 7462475e3a06fbb0b36243b391296f9f411e9041 , < 0363c03672cd3191f037905bf981eb523a3b71b1 (git)
Affected: 7462475e3a06fbb0b36243b391296f9f411e9041 , < 04bf4f2a497e9877c425c5124652e61fb8a1a0aa (git)
Affected: 7462475e3a06fbb0b36243b391296f9f411e9041 , < 8058061ed9d6bc259d1e678607b07d259342c08f (git)

Linux

Affected: 6.3
Unaffected: 0 , < 6.3 (semver)
Unaffected: 6.12.25 , ≤ 6.12.* (semver)
Unaffected: 6.14.4 , ≤ 6.14.* (semver)
Unaffected: 6.15 , ≤ * (original_commit_for_fix)

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{
  "containers": {
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "drivers/gpu/drm/amd/display/dc/hwss/dcn20/dcn20_hwseq.c",
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          ],
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          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
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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-J36M-8CR4-5CQ4

CVE-2025-37870 (GCVE-0-2025-37870)

Tags

Sightings

Nomenclature