github - ghsa-jw27-2859-7h38

GHSA-JW27-2859-7H38

Vulnerability from github – Published: 2025-09-05 18:31 – Updated: 2025-11-25 21:32

Details

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

drm/amd/display: fix a Null pointer dereference vulnerability

[Why] A null pointer dereference vulnerability exists in the AMD display driver's (DC module) cleanup function dc_destruct(). When display control context (dc->ctx) construction fails (due to memory allocation failure), this pointer remains NULL. During subsequent error handling when dc_destruct() is called, there's no NULL check before dereferencing the perf_trace member (dc->ctx->perf_trace), causing a kernel null pointer dereference crash.

[How] Check if dc->ctx is non-NULL before dereferencing.

(Updated commit text and removed unnecessary error message) (cherry picked from commit 9dd8e2ba268c636c240a918e0a31e6feaee19404)

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-2025-39705"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-476"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2025-09-05T18:15:47Z",
    "severity": "MODERATE"
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\ndrm/amd/display: fix a Null pointer dereference vulnerability\n\n[Why]\nA null pointer dereference vulnerability exists in the AMD display driver\u0027s\n(DC module) cleanup function dc_destruct().\nWhen display control context (dc-\u003ectx) construction fails\n(due to memory allocation failure), this pointer remains NULL.\nDuring subsequent error handling when dc_destruct() is called,\nthere\u0027s no NULL check before dereferencing the perf_trace member\n(dc-\u003ectx-\u003eperf_trace), causing a kernel null pointer dereference crash.\n\n[How]\nCheck if dc-\u003ectx is non-NULL before dereferencing.\n\n(Updated commit text and removed unnecessary error message)\n(cherry picked from commit 9dd8e2ba268c636c240a918e0a31e6feaee19404)",
  "id": "GHSA-jw27-2859-7h38",
  "modified": "2025-11-25T21:32:04Z",
  "published": "2025-09-05T18:31:27Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2025-39705"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/0961673cc5f0055957aa46f25eb4ef6c07e00165"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/1bcf63a44381691d6192872801f830ce3250e367"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/4ade995b9b25b3c6e8dc42c27070340f1358d8c8"
    }
  ],
  "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-2025-39705 (GCVE-0-2025-39705)

Vulnerability from cvelistv5 – Published: 2025-09-05 17:21 – Updated: 2025-09-29 05:57

Summary

In the Linux kernel, the following vulnerability has been resolved: drm/amd/display: fix a Null pointer dereference vulnerability [Why] A null pointer dereference vulnerability exists in the AMD display driver's (DC module) cleanup function dc_destruct(). When display control context (dc->ctx) construction fails (due to memory allocation failure), this pointer remains NULL. During subsequent error handling when dc_destruct() is called, there's no NULL check before dereferencing the perf_trace member (dc->ctx->perf_trace), causing a kernel null pointer dereference crash. [How] Check if dc->ctx is non-NULL before dereferencing. (Updated commit text and removed unnecessary error message) (cherry picked from commit 9dd8e2ba268c636c240a918e0a31e6feaee19404)

Severity ?

No CVSS data available.

Assigner

Linux

References

URL

Tags

	https://git.kernel.org/stable/c/0961673cc5f005595…
	https://git.kernel.org/stable/c/4ade995b9b25b3c6e…
	https://git.kernel.org/stable/c/1bcf63a44381691d6…

Impacted products

Vendor

Product

Version

Linux

Affected: 4562236b3bc0a28aeb6ee93b2d8a849a4c4e1c7c , < 0961673cc5f0055957aa46f25eb4ef6c07e00165 (git)
Affected: 4562236b3bc0a28aeb6ee93b2d8a849a4c4e1c7c , < 4ade995b9b25b3c6e8dc42c27070340f1358d8c8 (git)
Affected: 4562236b3bc0a28aeb6ee93b2d8a849a4c4e1c7c , < 1bcf63a44381691d6192872801f830ce3250e367 (git)

Linux

Affected: 4.15
Unaffected: 0 , < 4.15 (semver)
Unaffected: 6.12.44 , ≤ 6.12.* (semver)
Unaffected: 6.16.4 , ≤ 6.16.* (semver)
Unaffected: 6.17 , ≤ * (original_commit_for_fix)

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{
  "containers": {
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "drivers/gpu/drm/amd/display/dc/core/dc.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThan": "0961673cc5f0055957aa46f25eb4ef6c07e00165",
              "status": "affected",
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              "versionType": "git"
            },
            {
              "lessThan": "4ade995b9b25b3c6e8dc42c27070340f1358d8c8",
              "status": "affected",
              "version": "4562236b3bc0a28aeb6ee93b2d8a849a4c4e1c7c",
              "versionType": "git"
            },
            {
              "lessThan": "1bcf63a44381691d6192872801f830ce3250e367",
              "status": "affected",
              "version": "4562236b3bc0a28aeb6ee93b2d8a849a4c4e1c7c",
              "versionType": "git"
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        },
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          "defaultStatus": "affected",
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          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "4.15"
            },
            {
              "lessThan": "4.15",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.12.*",
              "status": "unaffected",
              "version": "6.12.44",
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            },
            {
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              "status": "unaffected",
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            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "6.17",
              "versionType": "original_commit_for_fix"
            }
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        }
      ],
      "cpeApplicability": [
        {
          "nodes": [
            {
              "cpeMatch": [
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.12.44",
                  "versionStartIncluding": "4.15",
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                }
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              "operator": "OR"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\ndrm/amd/display: fix a Null pointer dereference vulnerability\n\n[Why]\nA null pointer dereference vulnerability exists in the AMD display driver\u0027s\n(DC module) cleanup function dc_destruct().\nWhen display control context (dc-\u003ectx) construction fails\n(due to memory allocation failure), this pointer remains NULL.\nDuring subsequent error handling when dc_destruct() is called,\nthere\u0027s no NULL check before dereferencing the perf_trace member\n(dc-\u003ectx-\u003eperf_trace), causing a kernel null pointer dereference crash.\n\n[How]\nCheck if dc-\u003ectx is non-NULL before dereferencing.\n\n(Updated commit text and removed unnecessary error message)\n(cherry picked from commit 9dd8e2ba268c636c240a918e0a31e6feaee19404)"
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      "providerMetadata": {
        "dateUpdated": "2025-09-29T05:57:47.898Z",
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        {
          "url": "https://git.kernel.org/stable/c/1bcf63a44381691d6192872801f830ce3250e367"
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      "title": "drm/amd/display: fix a Null pointer dereference vulnerability",
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  "cveMetadata": {
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    "assignerShortName": "Linux",
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    "datePublished": "2025-09-05T17:21:11.767Z",
    "dateReserved": "2025-04-16T07:20:57.115Z",
    "dateUpdated": "2025-09-29T05:57:47.898Z",
    "state": "PUBLISHED"
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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-JW27-2859-7H38

CVE-2025-39705 (GCVE-0-2025-39705)

Tags

Sightings

Nomenclature