usb: gadget: uvc: Fix null pointer dereference in uvcg_video_init()

{
  "id": "8e702357a574b7bfb36c443dac3f7948b58674dac979aa05fa250eba1874db99",
  "url": "https://osv.dev/vulnerability/CVE-2026-89734",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "usb: gadget: uvc: Fix null pointer dereference in uvcg_video_init()",
    "summary": "In the Linux kernel, the following vulnerability has been resolved: usb: gadget: uvc: Fix null pointer dereference in uvcg_video_init() In uvcg_video_init(), if kthread_run_worker() fails, the error logged uses uvcg_err(), however, the pointer it uses: video->uvc is not assigned at this point, triggering a null pointer dereference. Fix this by directly using uvc->func which is assigned already.",
    "evidence": "osv:CVE-2026-89734",
    "products": [
      {
        "name": {
          "value": "Kernel",
          "evidence": "/affected/1/package/name"
        },
        "prerequisites": [],
        "fixed_versions": [
          {
            "value": "6.18.50",
            "evidence": "/affected/1/ranges"
          },
          {
            "value": "7.2.4",
            "evidence": "/affected/1/ranges"
          }
        ],
        "affected_versions": []
      }
    ],
    "severity": "unknown",
    "structured": {
      "id": "CVE-2026-89734",
      "aliases": [
        "CVE-2026-89734"
      ],
      "affected": [
        {
          "ranges": [
            {
              "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
              "type": "GIT",
              "events": [
                {
                  "introduced": "f0bbfbd16b3b67106535299d6a9ca3a5565494a6"
                },
                {
                  "fixed": "dbe2762ae8e543b06c57f1ac6512b02fd3fd09b2"
                },
                {
                  "fixed": "d511e015d06767f52bb18d48371cab6d7cb88433"
                },
                {
                  "fixed": "5b1da38592efdc1a263d4c0353298cba19e9d6fc"
                }
              ]
            }
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-89734.json"
          }
        },
        {
          "ranges": [
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "6.13.0"
                },
                {
                  "fixed": "6.18.50"
                }
              ]
            },
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "6.19.0"
                },
                {
                  "fixed": "7.2.4"
                }
              ]
            }
          ],
          "package": {
            "name": "Kernel",
            "ecosystem": "Linux"
          },
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-89734.json"
          }
        }
      ],
      "modified": "2026-10-28T02:30:25.035009506Z",
      "provider": "osv",
      "references": [
        "https://git.kernel.org/stable/c/5b1da38592efdc1a263d4c0353298cba19e9d6fc",
        "https://git.kernel.org/stable/c/d511e015d06767f52bb18d48371cab6d7cb88433",
        "https://git.kernel.org/stable/c/dbe2762ae8e543b06c57f1ac6512b02fd3fd09b2",
        "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/89xxx/CVE-2026-89734.json",
        "https://nvd.nist.gov/vuln/detail/CVE-2026-89734",
        "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/2026/89xxx/CVE-2026-89734.json"
      }
    },
    "related_cves": [
      {
        "value": "CVE-2026-89734",
        "evidence": "/id"
      }
    ],
    "security_relevant": true,
    "severity_evidence": null
  },
  "source_id": "core-osv",
  "document_id": 491665,
  "published_at": "2026-09-11T19:46:43.261+00:00"
}