media: stm32: dcmi: fix some error handling bugs in probe()

{
  "id": "2a24d031d47aeb3606f94d26f434d7b19c57ec7a45244d27b7b6f94308a485f1",
  "url": "https://osv.dev/vulnerability/CVE-2026-90405",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "media: stm32: dcmi: fix some error handling bugs in probe()",
    "summary": "In the Linux kernel, the following vulnerability has been resolved: media: stm32: dcmi: fix some error handling bugs in probe() There are a few issues here: 1) After we assign: chan = dma_request_chan(&pdev->dev, \"tx\"); Then the error paths need to clean up before returning. The first error path does a direct return. 2) The error paths check \"dcmi->mdma_chan\" but that is not assigned until later so it results in memory leaks. Test \"mdma_chan\" instead. 3) The error handling calls dma_release_channel(dcmi->dma_chan) before \"dcmi->dma_chan\" has been assigned which leads to a NULL pointer dereference. Use the \"chan\" variable instead. I also moved the call to dma_release_channel() after the call to dma_release_channel() so it mirrors the allocation code better.",
    "evidence": "osv:CVE-2026-90405",
    "products": [
      {
        "name": {
          "value": "Kernel",
          "evidence": "/affected/1/package/name"
        },
        "prerequisites": [],
        "fixed_versions": [
          {
            "value": "7.2.6",
            "evidence": "/affected/1/ranges"
          }
        ],
        "affected_versions": []
      }
    ],
    "severity": "unknown",
    "structured": {
      "id": "CVE-2026-90405",
      "aliases": [
        "CVE-2026-90405"
      ],
      "affected": [
        {
          "ranges": [
            {
              "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
              "type": "GIT",
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                {
                  "fixed": "4d030d7d1af95d24d3eb6e536a4f09b7bf9a8659"
                },
                {
                  "fixed": "f1d1ed39ced825615aeac61f0b6a322178756632"
                }
              ]
            }
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-90405.json"
          }
        },
        {
          "ranges": [
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "7.1.0"
                },
                {
                  "fixed": "7.2.6"
                }
              ]
            }
          ],
          "package": {
            "name": "Kernel",
            "ecosystem": "Linux"
          },
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-90405.json"
          }
        }
      ],
      "modified": "2026-10-28T02:30:30.352331885Z",
      "provider": "osv",
      "references": [
        "https://git.kernel.org/stable/c/4d030d7d1af95d24d3eb6e536a4f09b7bf9a8659",
        "https://git.kernel.org/stable/c/f1d1ed39ced825615aeac61f0b6a322178756632",
        "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/90xxx/CVE-2026-90405.json",
        "https://nvd.nist.gov/vuln/detail/CVE-2026-90405",
        "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/2026/90xxx/CVE-2026-90405.json"
      }
    },
    "related_cves": [
      {
        "value": "CVE-2026-90405",
        "evidence": "/id"
      }
    ],
    "security_relevant": true,
    "severity_evidence": null
  },
  "source_id": "core-osv",
  "document_id": 497347,
  "published_at": "2026-09-17T16:09:34.122+00:00"
}