{
  "affected": [
    {
      "ranges": [
        {
          "events": [
            {
              "introduced": "ceede9fa8939e40ad0ddb4ad1355f45c6f1d3478"
            },
            {
              "fixed": "f2f9fcacd81953dde6cb86312ab13ca13e689664"
            },
            {
              "fixed": "5d7cc2634c3843a1414a0f6407aa17f1f91dee60"
            },
            {
              "fixed": "cb16b79a2be2cec9c3ebe4147490817c4d8b1de3"
            },
            {
              "fixed": "a4f8f629983f643333e49df90557805469bcbb25"
            },
            {
              "fixed": "975b2ee20e569d47821e4f6c9761b4664d48a6a4"
            }
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "type": "GIT"
        }
      ]
    },
    {
      "package": {
        "ecosystem": "Linux",
        "name": "Kernel"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "3.5.0"
            },
            {
              "fixed": "6.6.148"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.7.0"
            },
            {
              "fixed": "6.12.101"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.13.0"
            },
            {
              "fixed": "6.18.42"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.19.0"
            },
            {
              "fixed": "7.1.6"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "database_specific": {
    "cna_assigner": "Linux",
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/68xxx/CVE-2026-68216.json"
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nmedia: pwc: Return queued buffers on start_streaming() failure\n\nThe vb2 framework hands buffers to the driver via buf_queue() before\ncalling start_streaming().  If start_streaming() returns an error\nwithout first returning those buffers via vb2_buffer_done(),\nvb2_start_streaming() fires WARN_ON(owned_by_drv_count) and the queued\nbuffers leak.\n\npwc's start_streaming() had two early returns that hit this trap:\n-ENODEV when the USB device was already disconnected, and -ERESTARTSYS\nwhen mutex_lock_interruptible() was interrupted by a signal.  Call the\nexisting pwc_cleanup_queued_bufs() helper with VB2_BUF_STATE_QUEUED\nbefore returning (matching the state already used by the\npwc_isoc_init() error path in the same function).\n\nThis mirrors the uvcvideo fix in commit 4cf3b6fd54eb (\"media: uvcvideo:\nReturn queued buffers on start_streaming() failure\").",
  "id": "CVE-2026-68216",
  "modified": "2026-08-12T03:51:35.928343084Z",
  "published": "2026-08-10T12:00:35.592Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/5d7cc2634c3843a1414a0f6407aa17f1f91dee60"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/975b2ee20e569d47821e4f6c9761b4664d48a6a4"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/a4f8f629983f643333e49df90557805469bcbb25"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/cb16b79a2be2cec9c3ebe4147490817c4d8b1de3"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/f2f9fcacd81953dde6cb86312ab13ca13e689664"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/68xxx/CVE-2026-68216.json"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-68216"
    },
    {
      "type": "PACKAGE",
      "url": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git"
    }
  ],
  "schema_version": "1.9.0",
  "summary": "media: pwc: Return queued buffers on start_streaming() failure"
}