drm/i915/gt: Check set_default_submission() before deferencing

{
  "id": "70c547f94e649bab74ad535ff51d9aa4302f8b7dd4ae81346b98e39f2574b3f0",
  "url": "https://osv.dev/vulnerability/CVE-2026-31540",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "drm/i915/gt: Check set_default_submission() before deferencing",
    "summary": "In the Linux kernel, the following vulnerability has been resolved: drm/i915/gt: Check set_default_submission() before deferencing When the i915 driver firmware binaries are not present, the set_default_submission pointer is not set. This pointer is dereferenced during suspend anyways. Add a check to make sure it is set before dereferencing. [ 23.289926] PM: suspend entry (deep) [ 23.293558] Filesystems sync: 0.000 seconds [ 23.298010] Freezing user space processes [ 23.302771] Freezing user space processes completed (elapsed 0.000 seconds) [ 23.309766] OOM killer disabled. [ 23.313027] Freezing remaining freezable tasks [ 23.318540] Freezing remaining freezable tasks completed (elapsed 0.001 seconds) [ 23.342038] serial 00:05: disabled [ 23.345719] serial 00:02: disabled [ 23.349342] serial 00:01: disabled [ 23.353782] sd 0:0:0:0: [sda] Synchronizing SCSI cache [ 23.358993] sd 1:0:0:0: [sdb] Synchronizing SCSI cache [ 23.361635] ata1.00: Entering standby power mode [ 23.368863] ata2.00: Entering standby power mode [ 23.445187] BUG: kernel NULL pointer dereference, address: 0000000000000000 [ 23.452194] #PF: supervisor instruction fetch in kernel mode [ 23.457896] #PF: error_code(0x0010) - not-present page [ 23.463065] PGD 0 P4D 0 [ 23.465640] Oops: Oops: 0010 [#1] SMP NOPTI [ 23.469869] CPU: 8 UID: 0 PID: 211 Comm: kworker/u48:18 Tainted: G S W 6.19.0-rc4-00020-gf0b9d8eb98df #10 PREEMPT(voluntary) [ 23.482512] Tainted: [S]=CPU_OUT_OF_SPEC, [W]=WARN [ 23.496511] Workqueue: as",
    "evidence": "osv:CVE-2026-31540",
    "products": [
      {
        "name": {
          "value": "Kernel",
          "evidence": "/affected/1/package/name"
        },
        "prerequisites": [],
        "fixed_versions": [
          {
            "value": "5.15.203",
            "evidence": "/affected/1/ranges"
          },
          {
            "value": "6.1.167",
            "evidence": "/affected/1/ranges"
          },
          {
            "value": "6.6.130",
            "evidence": "/affected/1/ranges"
          },
          {
            "value": "6.12.78",
            "evidence": "/affected/1/ranges"
          },
          {
            "value": "6.18.20",
            "evidence": "/affected/1/ranges"
          },
          {
            "value": "6.19.10",
            "evidence": "/affected/1/ranges"
          }
        ],
        "affected_versions": []
      }
    ],
    "severity": "unknown",
    "structured": {
      "id": "CVE-2026-31540",
      "aliases": [
        "CVE-2026-31540"
      ],
      "affected": [
        {
          "ranges": [
            {
              "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
              "type": "GIT",
              "events": [
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                {
                  "fixed": "db8b1bebe81ffb410ddd746b6869f72e22420850"
                },
                {
                  "fixed": "da6552d67012a1cf0585f2eb401d0c4abcf108c9"
                },
                {
                  "fixed": "df1f4a7d9cf689b4e96c95255228896505f44c31"
                },
                {
                  "fixed": "2e20a886b443a71b573ceaed3ca7053d15380916"
                },
                {
                  "fixed": "cf4b224ffb9a58181be32b64130fc36cf59c3192"
                },
                {
                  "fixed": "1a16150729db8d997e39519f9d58e6b435c4c087"
                },
                {
                  "fixed": "0162ab3220bac870e43e229e6e3024d1a21c3f26"
                }
              ]
            }
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-31540.json"
          }
        },
        {
          "ranges": [
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "4.12.0"
                },
                {
                  "fixed": "5.15.203"
                }
              ]
            },
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "5.16.0"
                },
                {
                  "fixed": "6.1.167"
                }
              ]
            },
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "6.2.0"
                },
                {
                  "fixed": "6.6.130"
                }
              ]
            },
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "6.7.0"
                },
                {
                  "fixed": "6.12.78"
                }
              ]
            },
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "6.13.0"
                },
                {
                  "fixed": "6.18.20"
                }
              ]
            },
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "6.19.0"
                },
                {
                  "fixed": "6.19.10"
                }
              ]
            }
          ],
          "package": {
            "name": "Kernel",
            "ecosystem": "Linux"
          },
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-31540.json"
          }
        }
      ],
      "modified": "2026-10-28T02:30:25.970581298Z",
      "provider": "osv",
      "references": [
        "https://git.kernel.org/stable/c/0162ab3220bac870e43e229e6e3024d1a21c3f26",
        "https://git.kernel.org/stable/c/1a16150729db8d997e39519f9d58e6b435c4c087",
        "https://git.kernel.org/stable/c/2e20a886b443a71b573ceaed3ca7053d15380916",
        "https://git.kernel.org/stable/c/cf4b224ffb9a58181be32b64130fc36cf59c3192",
        "https://git.kernel.org/stable/c/da6552d67012a1cf0585f2eb401d0c4abcf108c9",
        "https://git.kernel.org/stable/c/db8b1bebe81ffb410ddd746b6869f72e22420850",
        "https://git.kernel.org/stable/c/df1f4a7d9cf689b4e96c95255228896505f44c31",
        "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/31xxx/CVE-2026-31540.json",
        "https://nvd.nist.gov/vuln/detail/CVE-2026-31540",
        "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/2026/31xxx/CVE-2026-31540.json"
      }
    },
    "related_cves": [
      {
        "value": "CVE-2026-31540",
        "evidence": "/id"
      }
    ],
    "security_relevant": true,
    "severity_evidence": null
  },
  "source_id": "core-osv",
  "document_id": 492224,
  "published_at": "2026-04-24T14:33:09.705+00:00"
}