GHSA-5M9P-VM8M-7VMC

Vulnerability from github – Published: 2026-08-15 15:30 – Updated: 2026-08-19 18:32
VLAI
Details

In the Linux kernel, the following vulnerability has been resolved:

can: etas_es58x: es58x_read_bulk_callback(): fix RX buffer leak on URB resubmit failure

es58x_read_bulk_callback() resubmits the RX URB after processing a received packet. If the resubmit succeeds, the URB remains anchored and will be handled by the normal RX path or by teardown.

However, if usb_submit_urb() fails, the callback unanchors the URB and then returns directly. This skips the existing free_urb path, so the coherent transfer buffer allocated with usb_alloc_coherent() is not released.

Reuse the existing free_urb path after a resubmit failure so that the RX coherent buffer is freed before leaving the callback.

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{
  "affected": [],
  "aliases": [
    "CVE-2026-74459"
  ],
  "database_specific": {
    "cwe_ids": [],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2026-08-15T13:17:50Z",
    "severity": null
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\ncan: etas_es58x: es58x_read_bulk_callback(): fix RX buffer leak on URB resubmit failure\n\nes58x_read_bulk_callback() resubmits the RX URB after processing a received\npacket. If the resubmit succeeds, the URB remains anchored and will be\nhandled by the normal RX path or by teardown.\n\nHowever, if usb_submit_urb() fails, the callback unanchors the URB and then\nreturns directly. This skips the existing free_urb path, so the coherent\ntransfer buffer allocated with usb_alloc_coherent() is not released.\n\nReuse the existing free_urb path after a resubmit failure so that the RX\ncoherent buffer is freed before leaving the callback.",
  "id": "GHSA-5m9p-vm8m-7vmc",
  "modified": "2026-08-19T18:32:27Z",
  "published": "2026-08-15T15:30:33Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-74459"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/0ef136ba052101243ba117a1aca6f4a4c3a81142"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/19c6c8c6cd5dd14fab5fcd744584812a57cbb78d"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/21da1a374769751546cc131e58a4d8bd968f57b2"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/7a0cf2b2497c757c3cb1286eddf2986abb0d387b"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/b85e5c310382803d27adf6fe6554d4208bc8951c"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/c311f17c261fd375ddf5755f2ebe1f022c19c5b0"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/c7ddf119544eea2d8409e12471c3f9f36ca02e3f"
    }
  ],
  "schema_version": "1.4.0",
  "severity": []
}



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