drm/i915/gem: Zero-initialize the eb.vma array in i915_gem_do_execbuffer

{
  "id": "dd65a438fe87b3c57a9cc58375307f2fde8cc103fb6a96104a846c40b2e1cd85",
  "url": "https://osv.dev/vulnerability/CVE-2025-71130",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "drm/i915/gem: Zero-initialize the eb.vma array in i915_gem_do_execbuffer",
    "summary": "In the Linux kernel, the following vulnerability has been resolved: drm/i915/gem: Zero-initialize the eb.vma array in i915_gem_do_execbuffer Initialize the eb.vma array with values of 0 when the eb structure is first set up. In particular, this sets the eb->vma[i].vma pointers to NULL, simplifying cleanup and getting rid of the bug described below. During the execution of eb_lookup_vmas(), the eb->vma array is successively filled up with struct eb_vma objects. This process includes calling eb_add_vma(), which might fail; however, even in the event of failure, eb->vma[i].vma is set for the currently processed buffer. If eb_add_vma() fails, eb_lookup_vmas() returns with an error, which prompts a call to eb_release_vmas() to clean up the mess. Since eb_lookup_vmas() might fail during processing any (possibly not first) buffer, eb_release_vmas() checks whether a buffer's vma is NULL to know at what point did the lookup function fail. In eb_lookup_vmas(), eb->vma[i].vma is set to NULL if either the helper function eb_lookup_vma() or eb_validate_vma() fails. eb->vma[i+1].vma is set to NULL in case i915_gem_object_userptr_submit_init() fails; the current one needs to be cleaned up by eb_release_vmas() at this point, so the next one is set. If eb_add_vma() fails, neither the current nor the next vma is set to NULL, which is a source of a NULL deref bug described in the issue linked in the Closes tag. When entering eb_lookup_vmas(), the vma pointers are set to the slab poison value, i",
    "evidence": "osv:CVE-2025-71130",
    "products": [
      {
        "name": {
          "value": "Kernel",
          "evidence": "/affected/1/package/name"
        },
        "prerequisites": [],
        "fixed_versions": [
          {
            "value": "6.1.160",
            "evidence": "/affected/1/ranges"
          },
          {
            "value": "6.6.120",
            "evidence": "/affected/1/ranges"
          },
          {
            "value": "6.12.64",
            "evidence": "/affected/1/ranges"
          },
          {
            "value": "6.18.4",
            "evidence": "/affected/1/ranges"
          }
        ],
        "affected_versions": []
      }
    ],
    "severity": "high",
    "structured": {
      "id": "CVE-2025-71130",
      "aliases": [
        "CVE-2025-71130"
      ],
      "metrics": [
        {
          "type": "CVSS_V3",
          "score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H"
        }
      ],
      "affected": [
        {
          "ranges": [
            {
              "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
              "type": "GIT",
              "events": [
                {
                  "introduced": "544460c33821b44c2f0c643121303c3dc3f66ef1"
                },
                {
                  "fixed": "25d69e07770745992387c016613fd7ac8eaf9893"
                },
                {
                  "fixed": "0336188cc85d0eab8463bd1bbd4ded4e9602de8b"
                },
                {
                  "fixed": "24d55ac8e31d2f8197bfad71ffcb3bae21ed7117"
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                {
                  "fixed": "63f23aa2fbb823c8b15a29269fde220d227ce5b3"
                },
                {
                  "fixed": "4fe2bd195435e71c117983d87f278112c5ab364c"
                }
              ]
            }
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2025-71130.json"
          }
        },
        {
          "ranges": [
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "5.16.0"
                },
                {
                  "fixed": "6.1.160"
                }
              ]
            },
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "6.2.0"
                },
                {
                  "fixed": "6.6.120"
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              ]
            },
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "6.7.0"
                },
                {
                  "fixed": "6.12.64"
                }
              ]
            },
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "6.13.0"
                },
                {
                  "fixed": "6.18.4"
                }
              ]
            }
          ],
          "package": {
            "name": "Kernel",
            "ecosystem": "Linux"
          },
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2025-71130.json"
          }
        }
      ],
      "modified": "2026-10-28T02:30:45.425405917Z",
      "provider": "osv",
      "references": [
        "https://git.kernel.org/stable/c/0336188cc85d0eab8463bd1bbd4ded4e9602de8b",
        "https://git.kernel.org/stable/c/24d55ac8e31d2f8197bfad71ffcb3bae21ed7117",
        "https://git.kernel.org/stable/c/25d69e07770745992387c016613fd7ac8eaf9893",
        "https://git.kernel.org/stable/c/4fe2bd195435e71c117983d87f278112c5ab364c",
        "https://git.kernel.org/stable/c/63f23aa2fbb823c8b15a29269fde220d227ce5b3",
        "https://github.com/CVEProject/cvelistV5/tree/main/cves/2025/71xxx/CVE-2025-71130.json",
        "https://nvd.nist.gov/vuln/detail/CVE-2025-71130",
        "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git"
      ],
      "provider_metadata": {
        "cna_assigner": "Linux",
        "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2025/71xxx/CVE-2025-71130.json"
      }
    },
    "related_cves": [
      {
        "value": "CVE-2025-71130",
        "evidence": "/id"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/severity/0/score"
  },
  "source_id": "core-osv",
  "document_id": 513479,
  "published_at": "2026-01-14T15:07:46.508+00:00"
}