usb: gadget: uvc: fix list double add in uvcg_video_pump

{
  "id": "eb2f71d439509b87797a255f6eddf9b9f51ae3bba2e030b76ad54dbc36620ab5",
  "url": "https://osv.dev/vulnerability/CVE-2022-49686",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "usb: gadget: uvc: fix list double add in uvcg_video_pump",
    "summary": "In the Linux kernel, the following vulnerability has been resolved: usb: gadget: uvc: fix list double add in uvcg_video_pump A panic can occur if the endpoint becomes disabled and the uvcg_video_pump adds the request back to the req_free list after it has already been queued to the endpoint. The endpoint complete will add the request back to the req_free list. Invalidate the local request handle once it's been queued. <6>[ 246.796704][T13726] configfs-gadget gadget: uvc: uvc_function_set_alt(1, 0) <3>[ 246.797078][ T26] list_add double add: new=ffffff878bee5c40, prev=ffffff878bee5c40, next=ffffff878b0f0a90. <6>[ 246.797213][ T26] ------------[ cut here ]------------ <2>[ 246.797224][ T26] kernel BUG at lib/list_debug.c:31! <6>[ 246.807073][ T26] Call trace: <6>[ 246.807180][ T26] uvcg_video_pump+0x364/0x38c <6>[ 246.807366][ T26] process_one_work+0x2a4/0x544 <6>[ 246.807394][ T26] worker_thread+0x350/0x784 <6>[ 246.807442][ T26] kthread+0x2ac/0x320",
    "evidence": "osv:CVE-2022-49686",
    "products": [
      {
        "name": {
          "value": "Kernel",
          "evidence": "/affected/1/package/name"
        },
        "prerequisites": [],
        "fixed_versions": [
          {
            "value": "5.18.8",
            "evidence": "/affected/1/ranges"
          }
        ],
        "affected_versions": []
      }
    ],
    "severity": "unknown",
    "structured": {
      "id": "CVE-2022-49686",
      "aliases": [
        "CVE-2022-49686"
      ],
      "affected": [
        {
          "ranges": [
            {
              "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
              "type": "GIT",
              "events": [
                {
                  "introduced": "f9897ec0f6d34e8b2bc2f4c8ab8789351090f3d2"
                },
                {
                  "fixed": "d95ac8b920de1d39525fadc408ce675697626ca6"
                },
                {
                  "fixed": "96163f835e65f8c9897487fac965819f0651d671"
                }
              ]
            }
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2022-49686.json"
          }
        },
        {
          "ranges": [
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "5.16.0"
                },
                {
                  "fixed": "5.18.8"
                }
              ]
            }
          ],
          "package": {
            "name": "Kernel",
            "ecosystem": "Linux"
          },
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2022-49686.json"
          }
        }
      ],
      "modified": "2026-10-28T02:30:34.915035676Z",
      "provider": "osv",
      "references": [
        "https://git.kernel.org/stable/c/96163f835e65f8c9897487fac965819f0651d671",
        "https://git.kernel.org/stable/c/d95ac8b920de1d39525fadc408ce675697626ca6",
        "https://github.com/CVEProject/cvelistV5/tree/main/cves/2022/49xxx/CVE-2022-49686.json",
        "https://nvd.nist.gov/vuln/detail/CVE-2022-49686",
        "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/2022/49xxx/CVE-2022-49686.json"
      }
    },
    "related_cves": [
      {
        "value": "CVE-2022-49686",
        "evidence": "/id"
      }
    ],
    "security_relevant": true,
    "severity_evidence": null
  },
  "source_id": "core-osv",
  "document_id": 502167,
  "published_at": "2025-02-26T02:24:12.624+00:00"
}