{
  "schema_version": "1.6.1",
  "id": "RPI-CVE-2026-68209",
  "modified": "2026-10-07T17:22:01Z",
  "upstream": [
    "CVE-2026-68209"
  ],
  "published": "2026-08-10T12:08:00Z",
  "summary": "media: sun4i-csi: Return queued buffers on start_streaming() failure",
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nmedia: sun4i-csi: 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\nsun4i_csi_start_streaming() returned -EINVAL when no matching CSI\nformat could be found, before any setup (scratch buffer allocation,\npipeline start) had been performed.  The remaining error paths already\nconverge on the err_clear_dma_queue label, which calls\nreturn_all_buffers(..., VB2_BUF_STATE_QUEUED) under csi->qlock.  Jump\nto that label directly: the intermediate err_disable_device /\nerr_disable_pipeline / err_free_scratch_buffer labels are skipped,\nwhich is correct because nothing they would undo has happened yet.\n\nThis mirrors the uvcvideo fix in commit 4cf3b6fd54eb (\"media: uvcvideo:\nReturn queued buffers on start_streaming() failure\").",
  "affected": [
    {
      "package": {
        "ecosystem": "Raspberry Pi OS:12",
        "name": "linux"
      },
      "versions": [
        "1:6.1.47-1+rpt4"
      ],
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "linux-image-6.1.0-rpi3-rpi-2712",
            "binary_version": "1:6.1.47-1+rpt4"
          },
          {
            "binary_name": "linux-image-6.1.0-rpi3-rpi-v6",
            "binary_version": "1:6.1.47-1+rpt4"
          },
          {
            "binary_name": "linux-image-6.1.0-rpi3-rpi-v7",
            "binary_version": "1:6.1.47-1+rpt4"
          },
          {
            "binary_name": "linux-image-6.1.0-rpi3-rpi-v7l",
            "binary_version": "1:6.1.47-1+rpt4"
          },
          {
            "binary_name": "linux-image-6.1.0-rpi3-rpi-v8",
            "binary_version": "1:6.1.47-1+rpt4"
          }
        ]
      },
      "database_specific": {
        "per_version": {
          "1:6.1.47-1+rpt4": {
            "linux_commit": "655fc658a15ae7a6f37103754adb39ba52a9a14e",
            "upstream_version": "6.1.47",
            "assessment": "commit ancestry (strak rule)",
            "upstream_fixed": "6.1.183",
            "compiled_filter": false
          }
        }
      }
    }
  ],
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://www.cve.org/CVERecord?id=CVE-2026-68209"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/29fce7bcb3b959f6d4fdcdff7d26330152fdf98d"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/7c2c30e282745a83d332c3cf92d1c0bcc491ac54"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/3c0bd793b0083fd4639ba7f60d1e7db8c8ac459a"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/4872161e6fbe4e1783daea8bff79caddfae0fb82"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/a8abecc638a7feb20b78fabd563b05e30c071331"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/b5184b3f0e9d4cc47059ba1138c9a73d43d2493f"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/668face37fdb6b6900645dc8777195498541c9a7"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/bbba3e260a62810a717b4442a3bb96d0ec0f6309"
    }
  ],
  "database_specific": {
    "source": "https://git.kernel.org/pub/scm/linux/security/vulns.git",
    "upstream_modified": "2026-08-19T16:47:12Z"
  }
}