fkie_nvd - fkie_cve-2025-40354

FKIE_CVE-2025-40354

Vulnerability from fkie_nvd - Published: 2025-12-16 14:15 - Updated: 2025-12-18 15:08

Severity ?

Summary

In the Linux kernel, the following vulnerability has been resolved: drm/amd/display: increase max link count and fix link->enc NULL pointer access [why] 1.) dc->links[MAX_LINKS] array size smaller than actual requested. max_connector + max_dpia + 4 virtual = 14. increase from 12 to 14. 2.) hw_init() access null LINK_ENC for dpia non display_endpoint. (cherry picked from commit d7f5a61e1b04ed87b008c8d327649d184dc5bb45)

References

	URL	Tags
	416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/a3fc0d36cfb927f8986b83bf5fba47dbedad3c63
	416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/bec947cbe9a65783adb475a5fb47980d7b4f4796
	416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/f28092be4e12b7df9e4f415d25bf0d767bc2d9ed

Impacted products

	Vendor	Product	Version

JSON

To clipboard

{
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "In the Linux kernel, the following vulnerability has been resolved:\n\ndrm/amd/display: increase max link count and fix link-\u003eenc NULL pointer access\n\n[why]\n1.) dc-\u003elinks[MAX_LINKS] array size smaller than actual requested.\nmax_connector + max_dpia + 4 virtual = 14.\nincrease from 12 to 14.\n\n2.) hw_init() access null LINK_ENC for dpia non display_endpoint.\n\n(cherry picked from commit d7f5a61e1b04ed87b008c8d327649d184dc5bb45)"
    }
  ],
  "id": "CVE-2025-40354",
  "lastModified": "2025-12-18T15:08:25.907",
  "metrics": {},
  "published": "2025-12-16T14:15:47.310",
  "references": [
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/a3fc0d36cfb927f8986b83bf5fba47dbedad3c63"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/bec947cbe9a65783adb475a5fb47980d7b4f4796"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/f28092be4e12b7df9e4f415d25bf0d767bc2d9ed"
    }
  ],
  "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
  "vulnStatus": "Awaiting Analysis"
}

CVE-2025-40354 (GCVE-0-2025-40354)

Vulnerability from cvelistv5 – Published: 2025-12-16 13:30 – Updated: 2025-12-20 08:52

Title

drm/amd/display: increase max link count and fix link->enc NULL pointer access

Summary

Severity ?

No CVSS data available.

Assigner

Linux

References

URL

Tags

	https://git.kernel.org/stable/c/f28092be4e12b7df9…
	https://git.kernel.org/stable/c/a3fc0d36cfb927f89…
	https://git.kernel.org/stable/c/bec947cbe9a65783a…

Impacted products

Vendor

Product

Version

Linux

Affected: 4562236b3bc0a28aeb6ee93b2d8a849a4c4e1c7c , < f28092be4e12b7df9e4f415d25bf0d767bc2d9ed (git)
Affected: 4562236b3bc0a28aeb6ee93b2d8a849a4c4e1c7c , < a3fc0d36cfb927f8986b83bf5fba47dbedad3c63 (git)
Affected: 4562236b3bc0a28aeb6ee93b2d8a849a4c4e1c7c , < bec947cbe9a65783adb475a5fb47980d7b4f4796 (git)

Linux

Affected: 4.15
Unaffected: 0 , < 4.15 (semver)
Unaffected: 6.12.56 , ≤ 6.12.* (semver)
Unaffected: 6.17.6 , ≤ 6.17.* (semver)
Unaffected: 6.18 , ≤ * (original_commit_for_fix)

Show details on NVD website

JSON

To clipboard

{
  "containers": {
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "drivers/gpu/drm/amd/display/dc/hwss/dcn401/dcn401_hwseq.c",
            "drivers/gpu/drm/amd/display/dc/inc/hw/hw_shared.h"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThan": "f28092be4e12b7df9e4f415d25bf0d767bc2d9ed",
              "status": "affected",
              "version": "4562236b3bc0a28aeb6ee93b2d8a849a4c4e1c7c",
              "versionType": "git"
            },
            {
              "lessThan": "a3fc0d36cfb927f8986b83bf5fba47dbedad3c63",
              "status": "affected",
              "version": "4562236b3bc0a28aeb6ee93b2d8a849a4c4e1c7c",
              "versionType": "git"
            },
            {
              "lessThan": "bec947cbe9a65783adb475a5fb47980d7b4f4796",
              "status": "affected",
              "version": "4562236b3bc0a28aeb6ee93b2d8a849a4c4e1c7c",
              "versionType": "git"
            }
          ]
        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "drivers/gpu/drm/amd/display/dc/hwss/dcn401/dcn401_hwseq.c",
            "drivers/gpu/drm/amd/display/dc/inc/hw/hw_shared.h"
          ],
          "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": "6.12.56",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.17.*",
              "status": "unaffected",
              "version": "6.17.6",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "6.18",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "cpeApplicability": [
        {
          "nodes": [
            {
              "cpeMatch": [
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.12.56",
                  "versionStartIncluding": "4.15",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.17.6",
                  "versionStartIncluding": "4.15",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.18",
                  "versionStartIncluding": "4.15",
                  "vulnerable": true
                }
              ],
              "negate": false,
              "operator": "OR"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\ndrm/amd/display: increase max link count and fix link-\u003eenc NULL pointer access\n\n[why]\n1.) dc-\u003elinks[MAX_LINKS] array size smaller than actual requested.\nmax_connector + max_dpia + 4 virtual = 14.\nincrease from 12 to 14.\n\n2.) hw_init() access null LINK_ENC for dpia non display_endpoint.\n\n(cherry picked from commit d7f5a61e1b04ed87b008c8d327649d184dc5bb45)"
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2025-12-20T08:52:14.892Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
        {
          "url": "https://git.kernel.org/stable/c/f28092be4e12b7df9e4f415d25bf0d767bc2d9ed"
        },
        {
          "url": "https://git.kernel.org/stable/c/a3fc0d36cfb927f8986b83bf5fba47dbedad3c63"
        },
        {
          "url": "https://git.kernel.org/stable/c/bec947cbe9a65783adb475a5fb47980d7b4f4796"
        }
      ],
      "title": "drm/amd/display: increase max link count and fix link-\u003eenc NULL pointer access",
      "x_generator": {
        "engine": "bippy-1.2.0"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2025-40354",
    "datePublished": "2025-12-16T13:30:27.082Z",
    "dateReserved": "2025-04-16T07:20:57.187Z",
    "dateUpdated": "2025-12-20T08:52:14.892Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}

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

FKIE_CVE-2025-40354

CVE-2025-40354 (GCVE-0-2025-40354)

Tags

Sightings

Nomenclature