Vulnerability-Lookup

GHSA-WRC3-5873-3FF6

Vulnerability from github – Published: 2025-09-16 15:32 – Updated: 2025-12-02 21:31

Details

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

drm/nouveau/disp: fix use-after-free in error handling of nouveau_connector_create

We can't simply free the connector after calling drm_connector_init on it. We need to clean up the drm side first.

It might not fix all regressions from commit 2b5d1c29f6c4 ("drm/nouveau/disp: PIOR DP uses GPIO for HPD, not PMGR AUX interrupts"), but at least it fixes a memory corruption in error handling related to that commit.

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-2023-53263"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-416"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2025-09-16T08:15:34Z",
    "severity": "HIGH"
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\ndrm/nouveau/disp: fix use-after-free in error handling of nouveau_connector_create\n\nWe can\u0027t simply free the connector after calling drm_connector_init on it.\nWe need to clean up the drm side first.\n\nIt might not fix all regressions from commit 2b5d1c29f6c4\n(\"drm/nouveau/disp: PIOR DP uses GPIO for HPD, not PMGR AUX interrupts\"),\nbut at least it fixes a memory corruption in error handling related to\nthat commit.",
  "id": "GHSA-wrc3-5873-3ff6",
  "modified": "2025-12-02T21:31:26Z",
  "published": "2025-09-16T15:32:31Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2023-53263"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/1b254b791d7b7dea6e8adc887fbbd51746d8bb27"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/3f27451c9f29d5ed00232968680c7838a44dcac7"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/872feeecd08c81d212a52211d212897b8a857544"
    }
  ],
  "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-2023-53263 (GCVE-0-2023-53263)

Vulnerability from cvelistv5 – Published: 2025-09-16 08:06 – Updated: 2026-08-05 09:13

Title

drm/nouveau/disp: fix use-after-free in error handling of nouveau_connector_create

Summary

In the Linux kernel, the following vulnerability has been resolved: drm/nouveau/disp: fix use-after-free in error handling of nouveau_connector_create We can't simply free the connector after calling drm_connector_init on it. We need to clean up the drm side first. It might not fix all regressions from commit 2b5d1c29f6c4 ("drm/nouveau/disp: PIOR DP uses GPIO for HPD, not PMGR AUX interrupts"), but at least it fixes a memory corruption in error handling related to that commit.

Severity

7.8 (High)


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

SSVC

Exploitation: none Automatable: no Technical Impact: total

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2026-01-14 18:03 UTC

CWE

CWE-416 - Use After Free

Assigner

Linux mitre root Scorecard

References

3 references

URL	Tags
https://git.kernel.org/stable/c/3f27451c9f29d5ed0…
https://git.kernel.org/stable/c/872feeecd08c81d21…
https://git.kernel.org/stable/c/1b254b791d7b7dea6…

Impacted products

2 products

Vendor	Product	Version
Linux	Linux	Affected: 95983aea80038539ebc70e41e73e9bb4eabd1a92 , < 3f27451c9f29d5ed00232968680c7838a44dcac7 (git) Affected: 95983aea80038539ebc70e41e73e9bb4eabd1a92 , < 872feeecd08c81d212a52211d212897b8a857544 (git) Affected: 95983aea80038539ebc70e41e73e9bb4eabd1a92 , < 1b254b791d7b7dea6e8adc887fbbd51746d8bb27 (git)
Linux	Linux	Affected: 6.0 Unaffected: 0 , < 6.0 (semver) Unaffected: 6.1.47 , ≤ 6.1.* (semver) Unaffected: 6.4.12 , ≤ 6.4.* (semver) Unaffected: 6.5 , ≤ * (original_commit_for_fix)

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{
  "containers": {
    "adp": [
      {
        "metrics": [
          {
            "cvssV3_1": {
              "attackComplexity": "LOW",
              "attackVector": "LOCAL",
              "availabilityImpact": "HIGH",
              "baseScore": 7.8,
              "baseSeverity": "HIGH",
              "confidentialityImpact": "HIGH",
              "integrityImpact": "HIGH",
              "privilegesRequired": "LOW",
              "scope": "UNCHANGED",
              "userInteraction": "NONE",
              "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
              "version": "3.1"
            }
          },
          {
            "other": {
              "content": {
                "id": "CVE-2023-53263",
                "options": [
                  {
                    "Exploitation": "none"
                  },
                  {
                    "Automatable": "no"
                  },
                  {
                    "Technical Impact": "total"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2026-01-14T18:03:23.898360Z",
                "version": "2.0.3"
              },
              "type": "ssvc"
            }
          }
        ],
        "problemTypes": [
          {
            "descriptions": [
              {
                "cweId": "CWE-416",
                "description": "CWE-416 Use After Free",
                "lang": "en",
                "type": "CWE"
              }
            ]
          }
        ],
        "providerMetadata": {
          "dateUpdated": "2026-01-14T18:12:52.278Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "title": "CISA ADP Vulnrichment"
      }
    ],
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "drivers/gpu/drm/nouveau/nouveau_connector.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThan": "3f27451c9f29d5ed00232968680c7838a44dcac7",
              "status": "affected",
              "version": "95983aea80038539ebc70e41e73e9bb4eabd1a92",
              "versionType": "git"
            },
            {
              "lessThan": "872feeecd08c81d212a52211d212897b8a857544",
              "status": "affected",
              "version": "95983aea80038539ebc70e41e73e9bb4eabd1a92",
              "versionType": "git"
            },
            {
              "lessThan": "1b254b791d7b7dea6e8adc887fbbd51746d8bb27",
              "status": "affected",
              "version": "95983aea80038539ebc70e41e73e9bb4eabd1a92",
              "versionType": "git"
            }
          ]
        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "drivers/gpu/drm/nouveau/nouveau_connector.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "6.0"
            },
            {
              "lessThan": "6.0",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.1.*",
              "status": "unaffected",
              "version": "6.1.47",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.4.*",
              "status": "unaffected",
              "version": "6.4.12",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "6.5",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "cpeApplicability": [
        {
          "nodes": [
            {
              "cpeMatch": [
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.1.47",
                  "versionStartIncluding": "6.0",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.4.12",
                  "versionStartIncluding": "6.0",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.5",
                  "versionStartIncluding": "6.0",
                  "vulnerable": true
                }
              ],
              "negate": false,
              "operator": "OR"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\ndrm/nouveau/disp: fix use-after-free in error handling of nouveau_connector_create\n\nWe can\u0027t simply free the connector after calling drm_connector_init on it.\nWe need to clean up the drm side first.\n\nIt might not fix all regressions from commit 2b5d1c29f6c4\n(\"drm/nouveau/disp: PIOR DP uses GPIO for HPD, not PMGR AUX interrupts\"),\nbut at least it fixes a memory corruption in error handling related to\nthat commit."
        }
      ],
      "metrics": [
        {
          "cvssV3_1": {
            "baseScore": 7.8,
            "baseSeverity": "HIGH",
            "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
            "version": "3.1"
          },
          "scenarios": [
            {
              "lang": "en",
              "value": "AV:L - The bug is in nouveau DRM connector setup during GPU driver probe (PCI probe \u2192 nouveau_display_create \u2192 nouveau_connector_create), reachable only with local access to a system using the nouveau driver, not via network packets.\nAC:L - On affected hardware/configurations where nvif_conn_ctor or the DP IRQ nvif_conn_event_ctor fails, the UAF is deterministic: drm_connector_init already linked the object, kfree skips cleanup, and the caller immediately walks connector_list (encoder cull), with no attacker-uncontrollable race.\nPR:L - After the dangling connector remains on the DRM mode_config list, unprivileged local users with access to the DRM device (common via seat/video group) can exercise connector-list paths; exploitation does not require real root beyond ordinary local DRM access.\nUI:N - No separate victim action is required; the faulty error path runs during driver initialization and subsequent DRM use needs no cooperative user interaction.\nS:U - This is in-kernel memory corruption/privilege impact within the host kernel\u2019s security authority, not a VM/IOMMU/sandbox boundary crossing.\nC:H - Use-after-free of the drm_connector object leaves a heap object the attacker can reclaim and control, enabling arbitrary kernel read primitives per UAF guidance.\nI:H - The same UAF is exploitable for heap shaping and arbitrary write/control-flow hijacking in the kernel, so integrity impact is High.\nA:H - Dereferencing the freed connector during list walks (probe cull, cleanup, or later DRM operations) causes kernel oops/panic or equivalent denial of service."
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-08-05T09:13:20.402Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
        {
          "url": "https://git.kernel.org/stable/c/3f27451c9f29d5ed00232968680c7838a44dcac7"
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        {
          "url": "https://git.kernel.org/stable/c/872feeecd08c81d212a52211d212897b8a857544"
        },
        {
          "url": "https://git.kernel.org/stable/c/1b254b791d7b7dea6e8adc887fbbd51746d8bb27"
        }
      ],
      "title": "drm/nouveau/disp: fix use-after-free in error handling of nouveau_connector_create",
      "x_generator": {
        "engine": "bippy-1.2.0"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2023-53263",
    "datePublished": "2025-09-16T08:06:53.994Z",
    "dateReserved": "2025-09-16T08:05:12.514Z",
    "dateUpdated": "2026-08-05T09:13:20.402Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}

Sightings

Author	Source	Type	Date	Other

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.

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GHSA-WRC3-5873-3FF6

CVE-2023-53263 (GCVE-0-2023-53263)

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