CVE-2026-23080 (GCVE-0-2026-23080)

Vulnerability from cvelistv5 – Published: 2026-02-04 16:08 – Updated: 2026-05-11 21:59
VLAI
Title
can: mcba_usb: mcba_usb_read_bulk_callback(): fix URB memory leak
Summary
In the Linux kernel, the following vulnerability has been resolved: can: mcba_usb: mcba_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 mcba_usb_probe() -> mcba_usb_start(), the URBs for USB-in transfers are allocated, added to the priv->rx_submitted anchor and submitted. In the complete callback mcba_usb_read_bulk_callback(), the URBs are processed and resubmitted. In mcba_usb_close() -> mcba_urb_unlink() the URBs are freed by calling usb_kill_anchored_urbs(&priv->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 usb_kill_anchored_urbs(). Fix the memory leak by anchoring the URB in the mcba_usb_read_bulk_callback()to the priv->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
Linux CNA under the mitre root
CNA scorecard D 53/100 over 7018 records in the last 180 days details
References
Impacted products
Vendor Product Version CPE status
Linux Linux Affected: 51f3baad7de943780ce0c17bd7975df567dd6e14 , < 8b34c611a4feb81921bc4728c091e4e3ba0270c0 (git)
Affected: 51f3baad7de943780ce0c17bd7975df567dd6e14 , < b5a1ccdc63b71d93a69a6b72f7a3f3934293ea60 (git)
Affected: 51f3baad7de943780ce0c17bd7975df567dd6e14 , < 59153b6388e05609144ad56a9b354e9100a91983 (git)
Affected: 51f3baad7de943780ce0c17bd7975df567dd6e14 , < 179f6f0cf5ae489743273b7c1644324c0c477ea9 (git)
Affected: 51f3baad7de943780ce0c17bd7975df567dd6e14 , < 94c9f6f7b953f6382fef4bdc48c046b861b8868f (git)
Affected: 51f3baad7de943780ce0c17bd7975df567dd6e14 , < d374d715e338dfc3804aaa006fa6e470ffebb264 (git)
Affected: 51f3baad7de943780ce0c17bd7975df567dd6e14 , < 710a7529fb13c5a470258ff5508ed3c498d54729 (git)
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Linux Linux Affected: 4.12
Unaffected: 0 , < 4.12 (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: mcba_usb: mcba_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 mcba_usb_probe() -\u003e mcba_usb_start(), the URBs for USB-in transfers are\nallocated, added to the priv-\u003erx_submitted anchor and submitted. In the\ncomplete callback mcba_usb_read_bulk_callback(), the URBs are processed and\nresubmitted. In mcba_usb_close() -\u003e mcba_urb_unlink() the URBs are freed by\ncalling usb_kill_anchored_urbs(\u0026priv-\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 usb_kill_anchored_urbs().\n\nFix the memory leak by anchoring the URB in the\nmcba_usb_read_bulk_callback()to the priv-\u003erx_submitted anchor."
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            "value": "En el kernel de Linux, la siguiente vulnerabilidad ha sido resuelta:\n\ncan: mcba_usb: mcba_usb_read_bulk_callback(): corrige la fuga de memoria de URB\n\nCorrige una fuga de memoria similar a la del commit 7352e1d5932a (\u0027can: gs_usb: gs_usb_receive_bulk_callback(): corrige la fuga de memoria de URB\u0027).\n\nEn mcba_usb_probe() -\u0026gt; mcba_usb_start(), los URB para transferencias USB de entrada se asignan, se a\u00f1aden al ancla priv-\u0026gt;rx_submitted y se env\u00edan. En la funci\u00f3n de callback de completado mcba_usb_read_bulk_callback(), los URB se procesan y se reenv\u00edan. En mcba_usb_close() -\u0026gt; mcba_urb_unlink(), los URB se liberan llamando a usb_kill_anchored_urbs(\u0026amp;priv-\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 de completado. Esto significa que una vez que un URB de entrada ha sido completado, ya no est\u00e1 anclado y finalmente no se libera en usb_kill_anchored_urbs().\n\nCorrige la fuga de memoria anclando el URB en mcba_usb_read_bulk_callback() al ancla priv-\u0026gt;rx_submitted."
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        "id": "CVE-2026-23080",
        "lastModified": "2026-06-17T10:20:49.810",
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        "published": "2026-02-04T17:16:18.750",
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            "url": "https://git.kernel.org/stable/c/179f6f0cf5ae489743273b7c1644324c0c477ea9"
          },
          {
            "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
            "tags": [
              "Patch"
            ],
            "url": "https://git.kernel.org/stable/c/59153b6388e05609144ad56a9b354e9100a91983"
          },
          {
            "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
            "tags": [
              "Patch"
            ],
            "url": "https://git.kernel.org/stable/c/710a7529fb13c5a470258ff5508ed3c498d54729"
          },
          {
            "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
            "tags": [
              "Patch"
            ],
            "url": "https://git.kernel.org/stable/c/8b34c611a4feb81921bc4728c091e4e3ba0270c0"
          },
          {
            "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
            "tags": [
              "Patch"
            ],
            "url": "https://git.kernel.org/stable/c/94c9f6f7b953f6382fef4bdc48c046b861b8868f"
          },
          {
            "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
            "tags": [
              "Patch"
            ],
            "url": "https://git.kernel.org/stable/c/b5a1ccdc63b71d93a69a6b72f7a3f3934293ea60"
          },
          {
            "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
            "tags": [
              "Patch"
            ],
            "url": "https://git.kernel.org/stable/c/d374d715e338dfc3804aaa006fa6e470ffebb264"
          }
        ],
        "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": "Moderate",
      "current_release_date": "2026-06-28T07:18:38+00:00",
      "cve": "CVE-2026-23080",
      "id": "CVE-2026-23080",
      "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: mcba_usb: mcba_usb_read_bulk_callback(): fix URB memory leak",
      "url": "https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-23080.json",
      "version": "3"
    }
  }
}



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