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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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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.