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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
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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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.\"},{\"lang\":\"es\",\"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. 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    "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"
    },
    "suse_vex": {
      "aggregate_severity": "moderate",
      "current_release_date": "2026-07-24T02:40:17Z",
      "cve": "CVE-2026-23080",
      "id": "CVE-2026-23080",
      "initial_release_date": "2026-02-05T00:24:59Z",
      "product_status:first_fixed": "2",
      "product_status:known_affected": "437",
      "product_status:known_not_affected": "29",
      "product_status:recommended": "295",
      "source": "SUSE CSAF VEX",
      "status": "interim",
      "title": "SUSE CVE CVE-2026-23080",
      "url": "https://ftp.suse.com/pub/projects/security/csaf-vex/cve-2026-23080.json",
      "version": "25"
    }
  }
}



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Tags
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.