FKIE_CVE-2026-74459

Vulnerability from fkie_nvd - Published: 2026-08-15 13:17 - Updated: 2026-08-19 17:21
Severity
Summary
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.
References
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/0ef136ba052101243ba117a1aca6f4a4c3a81142
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/19c6c8c6cd5dd14fab5fcd744584812a57cbb78d
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/21da1a374769751546cc131e58a4d8bd968f57b2
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/7a0cf2b2497c757c3cb1286eddf2986abb0d387b
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/b85e5c310382803d27adf6fe6554d4208bc8951c
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/c311f17c261fd375ddf5755f2ebe1f022c19c5b0
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/c7ddf119544eea2d8409e12471c3f9f36ca02e3f
Impacted products
Vendor Product Version
To clipboard 

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



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