« Volver al listado

CVE-2026-74459

Estado: RecibidaSin puntuar—

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.

CVSS

NVD no ha asignado puntuación CVSS a esta CVE (habitual desde el cambio de política de abril de 2026).

Probabilidad de explotación (EPSS)

EPSS (Exploit Prediction Scoring System, de FIRST) estima la probabilidad de que una vulnerabilidad sea explotada en 30 días. Complementa a CVSS (impacto) y a CISA KEV (explotación confirmada).

Tecnologías afectadas (1)

⚠ Inferidas por IA a partir de la descripción — NVD aún no ha analizado esta CVE; no son CPE verificados.

Linux — Linux KernelAI

Referencias

JSON original (NVD)

Mostrar
{
  "id": "CVE-2026-74459",
  "cveTags": [],
  "metrics": {},
  "affected": [
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "affectedData": [
        {
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "product": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "7a0171b4921ad443fee5ed4fcb9d99fa4776edac",
              "lessThan": "c7ddf119544eea2d8409e12471c3f9f36ca02e3f",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "2185ea6e4ebcb61d1224dc7d187c59723cb5ad59",
              "lessThan": "21da1a374769751546cc131e58a4d8bd968f57b2",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "f6e90c113c92e83fc0963d5e60e16b0e8a268981",
              "lessThan": "0ef136ba052101243ba117a1aca6f4a4c3a81142",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "b878444519fa03a3edd287d1963cf79ef78be2f1",
              "lessThan": "b85e5c310382803d27adf6fe6554d4208bc8951c",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "18eee279e9b5bff0db1aca9475ae4bc12804f05c",
              "lessThan": "c311f17c261fd375ddf5755f2ebe1f022c19c5b0",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "5eaad4f768266f1f17e01232ffe2ef009f8129b7",
              "lessThan": "19c6c8c6cd5dd14fab5fcd744584812a57cbb78d",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "5eaad4f768266f1f17e01232ffe2ef009f8129b7",
              "lessThan": "7a0cf2b2497c757c3cb1286eddf2986abb0d387b",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "b8f9ca88253574638bcff38900a4c28d570b1919",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "5.15.203",
              "lessThan": "5.15.216",
              "versionType": "semver"
            },
            {
              "status": "affected",
              "version": "6.1.167",
              "lessThan": "6.1.183",
              "versionType": "semver"
            },
            {
              "status": "affected",
              "version": "6.6.130",
              "lessThan": "6.6.151",
              "versionType": "semver"
            },
            {
              "status": "affected",
              "version": "6.12.77",
              "lessThan": "6.12.103",
              "versionType": "semver"
            },
            {
              "status": "affected",
              "version": "6.18.17",
              "lessThan": "6.18.44",
              "versionType": "semver"
            },
            {
              "status": "affected",
              "version": "6.19.7",
              "lessThan": "6.20",
              "versionType": "semver"
            }
          ],
          "programFiles": [
            "drivers/net/can/usb/etas_es58x/es58x_core.c"
          ],
          "defaultStatus": "unaffected"
        },
        {
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "product": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "7.0"
            },
            {
              "status": "unaffected",
              "version": "0",
              "lessThan": "7.0",
              "versionType": "semver"
            },
            {
              "status": "unaffected",
              "version": "5.15.216",
              "versionType": "semver",
              "lessThanOrEqual": "5.15.*"
            },
            {
              "status": "unaffected",
              "version": "6.1.183",
              "versionType": "semver",
              "lessThanOrEqual": "6.1.*"
            },
            {
              "status": "unaffected",
              "version": "6.6.151",
              "versionType": "semver",
              "lessThanOrEqual": "6.6.*"
            },
            {
              "status": "unaffected",
              "version": "6.12.103",
              "versionType": "semver",
              "lessThanOrEqual": "6.12.*"
            },
            {
              "status": "unaffected",
              "version": "6.18.44",
              "versionType": "semver",
              "lessThanOrEqual": "6.18.*"
            },
            {
              "status": "unaffected",
              "version": "7.1.8",
              "versionType": "semver",
              "lessThanOrEqual": "7.1.*"
            },
            {
              "status": "unaffected",
              "version": "7.2",
              "versionType": "original_commit_for_fix",
              "lessThanOrEqual": "*"
            }
          ],
          "programFiles": [
            "drivers/net/can/usb/etas_es58x/es58x_core.c"
          ],
          "defaultStatus": "affected"
        }
      ]
    }
  ],
  "published": "2026-08-15T13:17:50.543",
  "references": [
    {
      "url": "https://git.kernel.org/stable/c/0ef136ba052101243ba117a1aca6f4a4c3a81142",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/19c6c8c6cd5dd14fab5fcd744584812a57cbb78d",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/21da1a374769751546cc131e58a4d8bd968f57b2",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/7a0cf2b2497c757c3cb1286eddf2986abb0d387b",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/b85e5c310382803d27adf6fe6554d4208bc8951c",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/c311f17c261fd375ddf5755f2ebe1f022c19c5b0",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/c7ddf119544eea2d8409e12471c3f9f36ca02e3f",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    }
  ],
  "vulnStatus": "Received",
  "descriptions": [
    {
      "lang": "en",
      "value": "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."
    }
  ],
  "lastModified": "2026-08-19T17:21:02.803",
  "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
}