CVE-2023-53746 (GCVE-0-2023-53746)

Vulnerability from cvelistv5 – Published: 2025-12-08 01:19 – Updated: 2026-05-11 19:50
VLAI
Title
s390/vfio-ap: fix memory leak in vfio_ap device driver
Summary
In the Linux kernel, the following vulnerability has been resolved: s390/vfio-ap: fix memory leak in vfio_ap device driver The device release callback function invoked to release the matrix device uses the dev_get_drvdata(device *dev) function to retrieve the pointer to the vfio_matrix_dev object in order to free its storage. The problem is, this object is not stored as drvdata with the device; since the kfree function will accept a NULL pointer, the memory for the vfio_matrix_dev object is never freed. Since the device being released is contained within the vfio_matrix_dev object, the container_of macro will be used to retrieve its pointer.
Severity
No CVSS data available.
Assigner
References
Impacted products
Vendor Product Version CPE status
Linux Linux Affected: 1fde573413b549d52183382e639c1d6ce88f5959 , < 5195de1d5f66b276683240a896783f7f43c4f664 (git)
Affected: 1fde573413b549d52183382e639c1d6ce88f5959 , < ee17dea3072dec0bc34399a32fa884e26342e4ea (git)
Affected: 1fde573413b549d52183382e639c1d6ce88f5959 , < aa2bff25e9bb10c935c7ffe3d5f5975bdccb1749 (git)
Affected: 1fde573413b549d52183382e639c1d6ce88f5959 , < 6a40fda14b4be3e38f03cc42ffd4efbc64fb3e67 (git)
Affected: 1fde573413b549d52183382e639c1d6ce88f5959 , < 7b6a02f5bf15931464c79dfd487c57f76aae3496 (git)
Affected: 1fde573413b549d52183382e639c1d6ce88f5959 , < 8f8cf767589f2131ae5d40f3758429095c701c84 (git)
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Linux Linux Affected: 4.20
Unaffected: 0 , < 4.20 (semver)
Unaffected: 5.4.240 , ≤ 5.4.* (semver)
Unaffected: 5.10.177 , ≤ 5.10.* (semver)
Unaffected: 5.15.106 , ≤ 5.15.* (semver)
Unaffected: 6.1.23 , ≤ 6.1.* (semver)
Unaffected: 6.2.10 , ≤ 6.2.* (semver)
Unaffected: 6.3 , ≤ * (original_commit_for_fix)
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{
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              "versionType": "semver"
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              "versionType": "semver"
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          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\ns390/vfio-ap: fix memory leak in vfio_ap device driver\n\nThe device release callback function invoked to release the matrix device\nuses the dev_get_drvdata(device *dev) function to retrieve the\npointer to the vfio_matrix_dev object in order to free its storage. The\nproblem is, this object is not stored as drvdata with the device; since the\nkfree function will accept a NULL pointer, the memory for the\nvfio_matrix_dev object is never freed.\n\nSince the device being released is contained within the vfio_matrix_dev\nobject, the container_of macro will be used to retrieve its pointer."
        }
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        },
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    "dateReserved": "2025-12-08T01:18:04.279Z",
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    "state": "PUBLISHED"
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          }
        ],
        "id": "CVE-2023-53746",
        "lastModified": "2026-06-17T06:45:59.977",
        "metrics": {},
        "published": "2025-12-08T02:15:49.923",
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      "current_release_date": "2026-07-21T19:13:13+00:00",
      "cve": "CVE-2023-53746",
      "id": "CVE-2023-53746",
      "initial_release_date": "2023-01-01T00:00:00+00:00",
      "product_status:fixed": "120",
      "product_status:known_affected": "124",
      "product_status:known_not_affected": "118",
      "source": "Red Hat CSAF VEX",
      "status": "final",
      "title": "kernel: s390/vfio-ap: fix memory leak in vfio_ap device driver",
      "url": "https://security.access.redhat.com/data/csaf/v2/vex/2023/cve-2023-53746.json",
      "version": "3"
    },
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      "cve": "CVE-2023-53746",
      "id": "CVE-2023-53746",
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      "source": "SUSE CSAF VEX",
      "status": "interim",
      "title": "SUSE CVE CVE-2023-53746",
      "url": "https://ftp.suse.com/pub/projects/security/csaf-vex/cve-2023-53746.json",
      "version": "24"
    }
  }
}



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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

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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.



Related by attack behaviour

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