CVE-2025-40069 (GCVE-0-2025-40069)

Vulnerability from cvelistv5 – Published: 2025-10-28 11:48 – Updated: 2026-08-05 12:07
VLAI
Title
drm/msm: Fix obj leak in VM_BIND error path
Summary
In the Linux kernel, the following vulnerability has been resolved: drm/msm: Fix obj leak in VM_BIND error path If we fail a handle-lookup part way thru, we need to drop the already obtained obj references. Patchwork: https://patchwork.freedesktop.org/patch/669784/
Severity
7.8 (High)
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Assigner
Linux CNA under the mitre root
CNA scorecard D 53/100 over 6641 records in the last 180 days details
References
Impacted products
Vendor Product Version CPE status
Linux Linux Affected: 2e6a8a1fe2b262a6dfd0a65041fcd830ee1e7143 , < 2b512909a291a964cfcf6b58de13256ab3e848c4 (git)
Affected: 2e6a8a1fe2b262a6dfd0a65041fcd830ee1e7143 , < 278f8904434aa96055e793936b5977c010549e28 (git)
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Linux Linux Affected: 6.17
Unaffected: 0 , < 6.17 (semver)
Unaffected: 6.17.3 , ≤ 6.17.* (semver)
Unaffected: 6.18 , ≤ * (original_commit_for_fix)
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{
  "containers": {
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "drivers/gpu/drm/msm/msm_gem_vma.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
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              "status": "affected",
              "version": "2e6a8a1fe2b262a6dfd0a65041fcd830ee1e7143",
              "versionType": "git"
            },
            {
              "lessThan": "278f8904434aa96055e793936b5977c010549e28",
              "status": "affected",
              "version": "2e6a8a1fe2b262a6dfd0a65041fcd830ee1e7143",
              "versionType": "git"
            }
          ]
        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "drivers/gpu/drm/msm/msm_gem_vma.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "6.17"
            },
            {
              "lessThan": "6.17",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.17.*",
              "status": "unaffected",
              "version": "6.17.3",
              "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": "6.17.3",
                  "versionStartIncluding": "6.17",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.18",
                  "versionStartIncluding": "6.17",
                  "vulnerable": true
                }
              ],
              "negate": false,
              "operator": "OR"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\ndrm/msm: Fix obj leak in VM_BIND error path\n\nIf we fail a handle-lookup part way thru, we need to drop the already\nobtained obj references.\n\nPatchwork: https://patchwork.freedesktop.org/patch/669784/"
        }
      ],
      "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 - Reached only through the `DRM_IOCTL_MSM_VM_BIND` ioctl on the local msm DRM device/render node, which requires an open file descriptor on `/dev/dri/renderD*`. There is no remote or adjacent-network path to this code.\nAC:L - Triggering is fully deterministic and race-free \u2014 a single VM_BIND ioctl with one MSM_VM_BIND_OP_MAP op carrying a handle not present in `file-\u003eobject_idr` (any large value, since IDR ids are allocated from 1 upward) drives the error path every time. All other validation (page-aligned iova/range, VA range) is trivially satisfied using values queryable via MSM_PARAM_VA_START/VA_SIZE.\nPR:L - Every ioctl on the path (MSM_SET_PARAM, MSM_SUBMITQUEUE_NEW, MSM_VM_BIND) is marked `DRM_RENDER_ALLOW`, so no DRM master, authentication, or capability is needed, and `MSM_PARAM_EN_VM_BIND` has no `capable()` gate. Any unprivileged process that can open the render node \u2014 including an Android app, a Chrome GPU sandbox process, or a desktop user on a Snapdragon laptop \u2014 qualifies.\nUI:N - The attacker issues the ioctls entirely from their own process; no victim action, no file to open, no device to plug in is involved.\nS:U - The corruption and any resulting escalation stay within the kernel\u0027s own security authority on the same host, with no crossing of a hypervisor, IOMMU, or other separate security scope.\nC:H - The union-aliased handle is dereferenced as a `struct drm_gem_object *` at an address the attacker fully controls; if that access succeeds, `drm_gem_object_free()` proceeds to read `obj-\u003efuncs-\u003efree` from attacker-shaped memory, giving a memory-corruption primitive that can be leveraged into arbitrary kernel memory disclosure.\nI:H - `kref_put()` performs an atomic read-modify-write (decrement) at the attacker-supplied address, and reaching zero funnels into an indirect call through a function pointer read from that same attacker-influenced memory \u2014 a write plus control-flow-hijack primitive, not a mere refcount imbalance.\nA:H - In the common case the wild pointer lands in an unmapped or PAN/SMAP-protected page and the `refcount_dec_and_test()` faults, producing an immediate kernel oops that kills the task and leaks the job/submitqueue state; an unprivileged user can trigger this at will, and with `panic_on_oops` (common on Android and hardened builds) it is a full system panic."
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-08-05T12:07:32.509Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
        {
          "url": "https://git.kernel.org/stable/c/2b512909a291a964cfcf6b58de13256ab3e848c4"
        },
        {
          "url": "https://git.kernel.org/stable/c/278f8904434aa96055e793936b5977c010549e28"
        }
      ],
      "title": "drm/msm: Fix obj leak in VM_BIND error path",
      "x_generator": {
        "engine": "bippy-1.2.0"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2025-40069",
    "datePublished": "2025-10-28T11:48:38.232Z",
    "dateReserved": "2025-04-16T07:20:57.159Z",
    "dateUpdated": "2026-08-05T12:07:32.509Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2",
  "vulnerability-lookup:meta": {
    "epss": {
      "cve": "CVE-2025-40069",
      "date": "2026-11-13",
      "epss": "0.00144",
      "percentile": "0.03754"
    },
    "nvd": {
      "cve": {
        "affected": [
          {
            "affectedData": [
              {
                "defaultStatus": "unaffected",
                "product": "Linux",
                "programFiles": [
                  "drivers/gpu/drm/msm/msm_gem_vma.c"
                ],
                "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
                "vendor": "Linux",
                "versions": [
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                    "lessThan": "2b512909a291a964cfcf6b58de13256ab3e848c4",
                    "status": "affected",
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                    "versionType": "git"
                  },
                  {
                    "lessThan": "278f8904434aa96055e793936b5977c010549e28",
                    "status": "affected",
                    "version": "2e6a8a1fe2b262a6dfd0a65041fcd830ee1e7143",
                    "versionType": "git"
                  }
                ]
              },
              {
                "defaultStatus": "affected",
                "product": "Linux",
                "programFiles": [
                  "drivers/gpu/drm/msm/msm_gem_vma.c"
                ],
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                "vendor": "Linux",
                "versions": [
                  {
                    "status": "affected",
                    "version": "6.17"
                  },
                  {
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                    "status": "unaffected",
                    "version": "0",
                    "versionType": "semver"
                  },
                  {
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                  },
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                    "version": "6.18",
                    "versionType": "original_commit_for_fix"
                  }
                ]
              }
            ],
            "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
          }
        ],
        "cveTags": [],
        "descriptions": [
          {
            "lang": "en",
            "value": "In the Linux kernel, the following vulnerability has been resolved:\n\ndrm/msm: Fix obj leak in VM_BIND error path\n\nIf we fail a handle-lookup part way thru, we need to drop the already\nobtained obj references.\n\nPatchwork: https://patchwork.freedesktop.org/patch/669784/"
          },
          {
            "lang": "es",
            "value": "En el kernel de Linux, la siguiente vulnerabilidad ha sido resuelta:\n\ndrm/msm: Corrige la fuga de obj en la ruta de error de VM_BIND\n\nSi falla una b\u00fasqueda de manejador a mitad de camino, necesitamos descartar las referencias de obj ya obtenidas.\n\nPatchwork: https://patchwork.freedesktop.org/patch/669784/"
          }
        ],
        "id": "CVE-2025-40069",
        "lastModified": "2026-10-19T21:10:00.160",
        "metrics": {
          "cvssMetricV31": [
            {
              "cvssData": {
                "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"
              },
              "exploitabilityScore": 1.8,
              "impactScore": 5.9,
              "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
              "type": "Secondary"
            }
          ]
        },
        "published": "2025-10-28T12:15:41.387",
        "references": [
          {
            "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
            "url": "https://git.kernel.org/stable/c/278f8904434aa96055e793936b5977c010549e28"
          },
          {
            "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
            "url": "https://git.kernel.org/stable/c/2b512909a291a964cfcf6b58de13256ab3e848c4"
          }
        ],
        "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "vulnStatus": "Deferred"
      }
    },
    "redhat_vex": {
      "aggregate_severity": "Low",
      "current_release_date": "2026-11-09T18:19:36+00:00",
      "cve": "CVE-2025-40069",
      "id": "CVE-2025-40069",
      "initial_release_date": "2025-10-28T00:00:00+00:00",
      "product_status:known_not_affected": "200",
      "source": "Red Hat CSAF VEX",
      "status": "final",
      "title": "kernel: drm/msm: Fix obj leak in VM_BIND error path",
      "url": "https://security.access.redhat.com/data/csaf/v2/vex/2025/cve-2025-40069.json",
      "version": "3"
    }
  }
}



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