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CVE-2026-23075 (GCVE-0-2026-23075)

Vulnerability from cvelistv5 – Published: 2026-02-04 16:08 – Updated: 2026-05-11 21:59
VLAI
Title
can: esd_usb: esd_usb_read_bulk_callback(): fix URB memory leak
Summary
In the Linux kernel, the following vulnerability has been resolved: can: esd_usb: esd_usb_read_bulk_callback(): fix URB memory leak Fix similar memory leak as in commit 7352e1d5932a ("can: gs_usb: gs_usb_receive_bulk_callback(): fix URB memory leak"). In esd_usb_open(), the URBs for USB-in transfers are allocated, added to the dev->rx_submitted anchor and submitted. In the complete callback esd_usb_read_bulk_callback(), the URBs are processed and resubmitted. In esd_usb_close() the URBs are freed by calling usb_kill_anchored_urbs(&dev->rx_submitted). However, this does not take into account that the USB framework unanchors the URB before the complete function is called. This means that once an in-URB has been completed, it is no longer anchored and is ultimately not released in esd_usb_close(). Fix the memory leak by anchoring the URB in the esd_usb_read_bulk_callback() to the dev->rx_submitted anchor.
Severity
5.5 (Medium)
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Assigner
References
Impacted products
Vendor Product Version CPE status
Linux Linux Affected: 96d8e90382dc336b5de401164597edfdc2e8d9f1 , < 93b34d4ba7266030801a509c088ac77c0d7a12e9 (git)
Affected: 96d8e90382dc336b5de401164597edfdc2e8d9f1 , < dc934d96673992af8568664c1b58e13eb164010d (git)
Affected: 96d8e90382dc336b5de401164597edfdc2e8d9f1 , < 92d26ce07ac3b7a850dc68c8d73d487b39c39b33 (git)
Affected: 96d8e90382dc336b5de401164597edfdc2e8d9f1 , < adec5e1f9c99fe079ec4c92cca3f1109a3e257c3 (git)
Affected: 96d8e90382dc336b5de401164597edfdc2e8d9f1 , < 9d1807b442fc3286b204f8e59981b10e743533ce (git)
Affected: 96d8e90382dc336b5de401164597edfdc2e8d9f1 , < a9503ae43256e80db5cba9d449b238607164c51d (git)
Affected: 96d8e90382dc336b5de401164597edfdc2e8d9f1 , < 5a4391bdc6c8357242f62f22069c865b792406b3 (git)
guessed Create a notification for this product.
Linux Linux Affected: 2.6.36
Unaffected: 0 , < 2.6.36 (semver)
Unaffected: 5.10.249 , ≤ 5.10.* (semver)
Unaffected: 5.15.199 , ≤ 5.15.* (semver)
Unaffected: 6.1.162 , ≤ 6.1.* (semver)
Unaffected: 6.6.122 , ≤ 6.6.* (semver)
Unaffected: 6.12.68 , ≤ 6.12.* (semver)
Unaffected: 6.18.8 , ≤ 6.18.* (semver)
Unaffected: 6.19 , ≤ * (original_commit_for_fix)
guessed Create a notification for this product.
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            "value": "In the Linux kernel, the following vulnerability has been resolved:\n\ncan: esd_usb: esd_usb_read_bulk_callback(): fix URB memory leak\n\nFix similar memory leak as in commit 7352e1d5932a (\"can: gs_usb:\ngs_usb_receive_bulk_callback(): fix URB memory leak\").\n\nIn esd_usb_open(), the URBs for USB-in transfers are allocated, added to\nthe dev-\u003erx_submitted anchor and submitted. In the complete callback\nesd_usb_read_bulk_callback(), the URBs are processed and resubmitted. In\nesd_usb_close() the URBs are freed by calling\nusb_kill_anchored_urbs(\u0026dev-\u003erx_submitted).\n\nHowever, this does not take into account that the USB framework unanchors\nthe URB before the complete function is called. This means that once an\nin-URB has been completed, it is no longer anchored and is ultimately not\nreleased in esd_usb_close().\n\nFix the memory leak by anchoring the URB in the\nesd_usb_read_bulk_callback() to the dev-\u003erx_submitted anchor."
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            "value": "En el kernel de Linux, la siguiente vulnerabilidad ha sido resuelta:\n\ncan: esd_usb: esd_usb_read_bulk_callback(): corregir fuga de memoria de URB\n\nCorregir fuga de memoria similar a la del commit 7352e1d5932a (\u0027can: gs_usb: gs_usb_receive_bulk_callback(): corregir fuga de memoria de URB\u0027).\n\nEn esd_usb_open(), los URB para transferencias USB de entrada son asignados, a\u00f1adidos al ancla dev-\u0026gt;rx_submitted y enviados. En la funci\u00f3n de devoluci\u00f3n de llamada completa esd_usb_read_bulk_callback(), los URB son procesados y reenviados. En esd_usb_close(), los URB son liberados llamando a usb_kill_anchored_urbs(\u0026amp;dev-\u0026gt;rx_submitted).\n\nSin embargo, esto no tiene en cuenta que el framework USB desancla el URB antes de que se llame a la funci\u00f3n completa. Esto significa que una vez que un URB de entrada ha sido completado, ya no est\u00e1 anclado y finalmente no es liberado en esd_usb_close().\n\nCorregir la fuga de memoria anclando el URB en esd_usb_read_bulk_callback() al ancla dev-\u0026gt;rx_submitted."
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        "id": "CVE-2026-23075",
        "lastModified": "2026-06-17T10:20:49.220",
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          },
          {
            "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
            "tags": [
              "Patch"
            ],
            "url": "https://git.kernel.org/stable/c/92d26ce07ac3b7a850dc68c8d73d487b39c39b33"
          },
          {
            "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
            "tags": [
              "Patch"
            ],
            "url": "https://git.kernel.org/stable/c/93b34d4ba7266030801a509c088ac77c0d7a12e9"
          },
          {
            "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
            "tags": [
              "Patch"
            ],
            "url": "https://git.kernel.org/stable/c/9d1807b442fc3286b204f8e59981b10e743533ce"
          },
          {
            "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
            "tags": [
              "Patch"
            ],
            "url": "https://git.kernel.org/stable/c/a9503ae43256e80db5cba9d449b238607164c51d"
          },
          {
            "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
            "tags": [
              "Patch"
            ],
            "url": "https://git.kernel.org/stable/c/adec5e1f9c99fe079ec4c92cca3f1109a3e257c3"
          },
          {
            "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
            "tags": [
              "Patch"
            ],
            "url": "https://git.kernel.org/stable/c/dc934d96673992af8568664c1b58e13eb164010d"
          }
        ],
        "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "vulnStatus": "Analyzed",
        "weaknesses": [
          {
            "description": [
              {
                "lang": "en",
                "value": "CWE-401"
              }
            ],
            "source": "nvd@nist.gov",
            "type": "Primary"
          }
        ]
      }
    },
    "redhat_vex": {
      "aggregate_severity": "None",
      "current_release_date": "2026-06-28T11:35:55+00:00",
      "cve": "CVE-2026-23075",
      "id": "CVE-2026-23075",
      "initial_release_date": "2026-02-04T00:00:00+00:00",
      "product_status:known_not_affected": "274",
      "source": "Red Hat CSAF VEX",
      "status": "final",
      "title": "kernel: can: esd_usb: esd_usb_read_bulk_callback(): fix URB memory leak",
      "url": "https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-23075.json",
      "version": "3"
    },
    "suse_vex": {
      "aggregate_severity": "moderate",
      "current_release_date": "2026-05-13T03:46:05Z",
      "cve": "CVE-2026-23075",
      "id": "CVE-2026-23075",
      "initial_release_date": "2026-02-05T00:25:07Z",
      "product_status:known_affected": "263",
      "source": "SUSE CSAF VEX",
      "status": "interim",
      "title": "SUSE CVE CVE-2026-23075",
      "url": "https://ftp.suse.com/pub/projects/security/csaf-vex/cve-2026-23075.json",
      "version": "9"
    }
  }
}



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Taxonomy of the tags.





Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

Sightings

Author Source Type Date Other

Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
  • Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
  • Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
  • Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.


Detection rules are retrieved from Rulezet.


Related by attack behaviour

Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.