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CVE-2026-89734 (GCVE-0-2026-89734)

Vulnerability from cvelistv5 – Published: 2026-09-11 19:46 – Updated: 2026-09-11 19:46
VLAI
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.
Severity
No CVSS data available.
Assigner
References
Impacted products
Vendor Product Version CPE status
Linux Linux Affected: f0bbfbd16b3b67106535299d6a9ca3a5565494a6 , < dbe2762ae8e543b06c57f1ac6512b02fd3fd09b2 (git)
Affected: f0bbfbd16b3b67106535299d6a9ca3a5565494a6 , < d511e015d06767f52bb18d48371cab6d7cb88433 (git)
Affected: f0bbfbd16b3b67106535299d6a9ca3a5565494a6 , < 5b1da38592efdc1a263d4c0353298cba19e9d6fc (git)
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Linux Linux Affected: 6.13
Unaffected: 0 , < 6.13 (semver)
Unaffected: 6.18.50 , ≤ 6.18.* (semver)
Unaffected: 7.2.4 , ≤ 7.2.* (semver)
Unaffected: 7.3-rc1 , ≤ * (original_commit_for_fix)
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{
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          "product": "Linux",
          "programFiles": [
            "drivers/usb/gadget/function/uvc_video.c"
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              "negate": false,
              "operator": "OR"
            }
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        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nusb: gadget: uvc: Fix null pointer dereference in uvcg_video_init()\n\nIn uvcg_video_init(), if kthread_run_worker() fails,\nthe error logged uses uvcg_err(), however, the pointer it uses:\nvideo-\u003euvc is not assigned at this point, triggering a null\npointer dereference. Fix this by directly using uvc-\u003efunc which\nis assigned already."
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-09-11T19:46:43.261Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
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      "title": "usb: gadget: uvc: Fix null pointer dereference in uvcg_video_init()",
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  "cveMetadata": {
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    "datePublished": "2026-09-11T19:46:43.261Z",
    "dateReserved": "2026-09-11T19:38:34.760Z",
    "dateUpdated": "2026-09-11T19:46:43.261Z",
    "state": "PUBLISHED"
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      "cve": "CVE-2026-89734",
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      "title": "kernel: Linux kernel: Denial of Service due to null pointer dereference in USB Video Class gadget driver",
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      "cve": "CVE-2026-89734",
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      "status": "interim",
      "title": "SUSE CVE CVE-2026-89734",
      "url": "https://ftp.suse.com/pub/projects/security/csaf-vex/cve-2026-89734.json",
      "version": "2"
    }
  }
}



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