CVE-2026-90405 (GCVE-0-2026-90405)

Vulnerability from cvelistv5 – Published: 2026-09-17 16:09 – Updated: 2026-09-17 16:09
VLAI
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.
Severity
No CVSS data available.
Assigner
References
Impacted products
Vendor Product Version CPE status
Linux Linux Affected: bc901885fae0a0273288666609d143e960b6ad3a , < 4d030d7d1af95d24d3eb6e536a4f09b7bf9a8659 (git)
Affected: bc901885fae0a0273288666609d143e960b6ad3a , < f1d1ed39ced825615aeac61f0b6a322178756632 (git)
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Linux Linux Affected: 7.1
Unaffected: 0 , < 7.1 (semver)
Unaffected: 7.2.6 , ≤ 7.2.* (semver)
Unaffected: 7.3-rc1 , ≤ * (original_commit_for_fix)
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{
  "containers": {
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          "product": "Linux",
          "programFiles": [
            "drivers/media/platform/st/stm32/stm32-dcmi.c"
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          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nmedia: stm32: dcmi: fix some error handling bugs in probe()\n\nThere are a few issues here:\n\n1) After we assign:\n        chan = dma_request_chan(\u0026pdev-\u003edev, \"tx\");\n   Then the error paths need to clean up before returning.  The first\n   error path does a direct return.\n2) The error paths check \"dcmi-\u003emdma_chan\" but that is not assigned\n   until later so it results in memory leaks.  Test \"mdma_chan\"\n   instead.\n3) The error handling calls dma_release_channel(dcmi-\u003edma_chan) before\n   \"dcmi-\u003edma_chan\" has been assigned which leads to a NULL pointer\n   dereference.  Use the \"chan\" variable instead.\n\nI also moved the call to dma_release_channel() after the call to\ndma_release_channel() so it mirrors the allocation code better."
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-09-17T16:09:34.122Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
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          "url": "https://git.kernel.org/stable/c/4d030d7d1af95d24d3eb6e536a4f09b7bf9a8659"
        },
        {
          "url": "https://git.kernel.org/stable/c/f1d1ed39ced825615aeac61f0b6a322178756632"
        }
      ],
      "title": "media: stm32: dcmi: fix some error handling bugs in probe()",
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    "cveId": "CVE-2026-90405",
    "datePublished": "2026-09-17T16:09:34.122Z",
    "dateReserved": "2026-09-11T19:38:34.812Z",
    "dateUpdated": "2026-09-17T16:09:34.122Z",
    "state": "PUBLISHED"
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        "cveTags": [],
        "descriptions": [
          {
            "lang": "en",
            "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nmedia: stm32: dcmi: fix some error handling bugs in probe()\n\nThere are a few issues here:\n\n1) After we assign:\n        chan = dma_request_chan(\u0026pdev-\u003edev, \"tx\");\n   Then the error paths need to clean up before returning.  The first\n   error path does a direct return.\n2) The error paths check \"dcmi-\u003emdma_chan\" but that is not assigned\n   until later so it results in memory leaks.  Test \"mdma_chan\"\n   instead.\n3) The error handling calls dma_release_channel(dcmi-\u003edma_chan) before\n   \"dcmi-\u003edma_chan\" has been assigned which leads to a NULL pointer\n   dereference.  Use the \"chan\" variable instead.\n\nI also moved the call to dma_release_channel() after the call to\ndma_release_channel() so it mirrors the allocation code better."
          }
        ],
        "id": "CVE-2026-90405",
        "lastModified": "2026-09-17T17:17:40.357",
        "metrics": {},
        "published": "2026-09-17T17:17:40.357",
        "references": [
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      "current_release_date": "2026-09-22T16:28:37Z",
      "cve": "CVE-2026-90405",
      "id": "CVE-2026-90405",
      "initial_release_date": "2026-09-18T00:16:44Z",
      "product_status:known_not_affected": "347",
      "source": "SUSE CSAF VEX",
      "status": "interim",
      "title": "SUSE CVE CVE-2026-90405",
      "url": "https://ftp.suse.com/pub/projects/security/csaf-vex/cve-2026-90405.json",
      "version": "4"
    }
  }
}



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