{
  "affected": [
    {
      "ranges": [
        {
          "events": [
            {
              "introduced": "577bbf23b758848f0c4a50d346460b690c753024"
            },
            {
              "fixed": "4872161e6fbe4e1783daea8bff79caddfae0fb82"
            },
            {
              "fixed": "a8abecc638a7feb20b78fabd563b05e30c071331"
            },
            {
              "fixed": "b5184b3f0e9d4cc47059ba1138c9a73d43d2493f"
            },
            {
              "fixed": "668face37fdb6b6900645dc8777195498541c9a7"
            },
            {
              "fixed": "bbba3e260a62810a717b4442a3bb96d0ec0f6309"
            }
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "type": "GIT"
        }
      ]
    },
    {
      "package": {
        "ecosystem": "Linux",
        "name": "Kernel"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "5.4.0"
            },
            {
              "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-2026-68209.json"
  },
  "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-\u003eqlock.  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\").",
  "id": "CVE-2026-68209",
  "modified": "2026-08-14T03:51:53.915150190Z",
  "published": "2026-08-10T12:00:28.245Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/4872161e6fbe4e1783daea8bff79caddfae0fb82"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/668face37fdb6b6900645dc8777195498541c9a7"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/a8abecc638a7feb20b78fabd563b05e30c071331"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/b5184b3f0e9d4cc47059ba1138c9a73d43d2493f"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/bbba3e260a62810a717b4442a3bb96d0ec0f6309"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/68xxx/CVE-2026-68209.json"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-68209"
    },
    {
      "type": "PACKAGE",
      "url": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git"
    }
  ],
  "schema_version": "1.9.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
      "type": "CVSS_V3"
    }
  ],
  "summary": "media: sun4i-csi: Return queued buffers on start_streaming() failure"
}