FKIE_CVE-2023-54220

Vulnerability from fkie_nvd - Published: 2025-12-30 13:16 - Updated: 2026-10-28 19:10
Severity
7.8 (High) - CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Summary
In the Linux kernel, the following vulnerability has been resolved: serial: 8250: Fix oops for port->pm on uart_change_pm() Unloading a hardware specific 8250 driver can produce error "Unable to handle kernel paging request at virtual address" about ten seconds after unloading the driver. This happens on uart_hangup() calling uart_change_pm(). Turns out commit 04e82793f068 ("serial: 8250: Reinit port->pm on port specific driver unbind") was only a partial fix. If the hardware specific driver has initialized port->pm function, we need to clear port->pm too. Just reinitializing port->ops does not do this. Otherwise serial8250_pm() will call port->pm() instead of serial8250_do_pm().
References
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/0c05493341d6f2097f75f0a5dbb7b53a9e8c5f6c
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/18e27df4f2b4e257c317ba8076f31a888f6cc64b
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/375806616f8c772c33d40e112530887b37c1a816
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/66f3e55960698c874b0598277913b478ecd29573
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/720a297b334e85d34099e83d1f375b92c3efedd6
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/b653289ca6460a6552c8590b75dfa84a0140a46b
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/bd70d0b28010d560a8be96b44fea86fe2ba016ae
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/dfe2aeb226fd5e19b0ee795f4f6ed8bc494c1534
Impacted products
Vendor Product Version
To clipboard 

{
  "affected": [
    {
      "affectedData": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "drivers/tty/serial/8250/8250_port.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThan": "66f3e55960698c874b0598277913b478ecd29573",
              "status": "affected",
              "version": "490bf37eaabb0a857ed1ae8e75d8854e41662f1c",
              "versionType": "git"
            },
            {
              "lessThan": "720a297b334e85d34099e83d1f375b92c3efedd6",
              "status": "affected",
              "version": "c9e080c3005fd183c56ff8f4d75edb5da0765d2c",
              "versionType": "git"
            },
            {
              "lessThan": "b653289ca6460a6552c8590b75dfa84a0140a46b",
              "status": "affected",
              "version": "d5cd2928d31042a7c0a01464f9a8d95be736421d",
              "versionType": "git"
            },
            {
              "lessThan": "bd70d0b28010d560a8be96b44fea86fe2ba016ae",
              "status": "affected",
              "version": "2c86a1305c1406f45ea780d06953c484ea1d9e6e",
              "versionType": "git"
            },
            {
              "lessThan": "18e27df4f2b4e257c317ba8076f31a888f6cc64b",
              "status": "affected",
              "version": "1ba5594739d858e524ff0f398ee1ebfe0a8b9d41",
              "versionType": "git"
            },
            {
              "lessThan": "0c05493341d6f2097f75f0a5dbb7b53a9e8c5f6c",
              "status": "affected",
              "version": "af4d6dbb1a92ea424ad1ba1d0c88c7fa2345d872",
              "versionType": "git"
            },
            {
              "lessThan": "375806616f8c772c33d40e112530887b37c1a816",
              "status": "affected",
              "version": "04e82793f068d2f0ffe62fcea03d007a8cdc16a7",
              "versionType": "git"
            },
            {
              "lessThan": "dfe2aeb226fd5e19b0ee795f4f6ed8bc494c1534",
              "status": "affected",
              "version": "04e82793f068d2f0ffe62fcea03d007a8cdc16a7",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "8e596aed5f2f98cf3e6e98d6fe1d689f4a319308",
              "versionType": "git"
            },
            {
              "lessThan": "4.14.324",
              "status": "affected",
              "version": "4.14.316",
              "versionType": "semver"
            },
            {
              "lessThan": "4.19.293",
              "status": "affected",
              "version": "4.19.284",
              "versionType": "semver"
            },
            {
              "lessThan": "5.4.255",
              "status": "affected",
              "version": "5.4.244",
              "versionType": "semver"
            },
            {
              "lessThan": "5.10.192",
              "status": "affected",
              "version": "5.10.181",
              "versionType": "semver"
            },
            {
              "lessThan": "5.15.128",
              "status": "affected",
              "version": "5.15.113",
              "versionType": "semver"
            },
            {
              "lessThan": "6.1.47",
              "status": "affected",
              "version": "6.1.30",
              "versionType": "semver"
            },
            {
              "lessThan": "6.4",
              "status": "affected",
              "version": "6.3.4",
              "versionType": "semver"
            }
          ]
        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "drivers/tty/serial/8250/8250_port.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "6.4"
            },
            {
              "lessThan": "6.4",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "4.14.*",
              "status": "unaffected",
              "version": "4.14.324",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "4.19.*",
              "status": "unaffected",
              "version": "4.19.293",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.4.*",
              "status": "unaffected",
              "version": "5.4.255",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.10.*",
              "status": "unaffected",
              "version": "5.10.192",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.15.*",
              "status": "unaffected",
              "version": "5.15.128",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.1.*",
              "status": "unaffected",
              "version": "6.1.47",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.4.*",
              "status": "unaffected",
              "version": "6.4.12",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "6.5",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    }
  ],
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nserial: 8250: Fix oops for port-\u003epm on uart_change_pm()\n\nUnloading a hardware specific 8250 driver can produce error \"Unable to\nhandle kernel paging request at virtual address\" about ten seconds after\nunloading the driver. This happens on uart_hangup() calling\nuart_change_pm().\n\nTurns out commit 04e82793f068 (\"serial: 8250: Reinit port-\u003epm on port\nspecific driver unbind\") was only a partial fix. If the hardware specific\ndriver has initialized port-\u003epm function, we need to clear port-\u003epm too.\nJust reinitializing port-\u003eops does not do this. Otherwise serial8250_pm()\nwill call port-\u003epm() instead of serial8250_do_pm()."
    },
    {
      "lang": "es",
      "value": "En el kernel de Linux, la siguiente vulnerabilidad ha sido resuelta:\n\nserial: 8250: Correcci\u00f3n de oops para port  -\u003e  pm en uart_change_pm()\n\nLa descarga de un controlador 8250 espec\u00edfico de hardware puede producir el error \u2019Unable to handle kernel paging request at virtual address\u2019 aproximadamente diez segundos despu\u00e9s de descargar el controlador. Esto ocurre cuando uart_hangup() llama a uart_change_pm().\n\nResulta que el commit 04e82793f068 (\u2019serial: 8250: Reiniciar port  -\u003e  pm al desvincular el controlador espec\u00edfico del puerto\u2019) fue solo una soluci\u00f3n parcial. Si el controlador espec\u00edfico de hardware ha inicializado la funci\u00f3n port  -\u003e  pm, tambi\u00e9n necesitamos limpiar port  -\u003e  pm. Solo reinicializar port  -\u003e  ops no hace esto. De lo contrario, serial8250_pm() llamar\u00e1 a port  -\u003e  pm() en lugar de serial8250_do_pm()."
    }
  ],
  "id": "CVE-2023-54220",
  "lastModified": "2026-10-28T19:10:00.193",
  "metrics": {
    "cvssMetricV31": [
      {
        "cvssData": {
          "attackComplexity": "LOW",
          "attackVector": "LOCAL",
          "availabilityImpact": "HIGH",
          "baseScore": 7.8,
          "baseSeverity": "HIGH",
          "confidentialityImpact": "HIGH",
          "integrityImpact": "HIGH",
          "privilegesRequired": "LOW",
          "scope": "UNCHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
          "version": "3.1"
        },
        "exploitabilityScore": 1.8,
        "impactScore": 5.9,
        "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "type": "Secondary"
      }
    ],
    "ssvcV203": [
      {
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "ssvcData": {
          "id": "CVE-2023-54220",
          "options": [
            {
              "exploitation": "none"
            },
            {
              "automatable": "no"
            },
            {
              "technicalImpact": "total"
            }
          ],
          "role": "CISA Coordinator",
          "timestamp": "2026-10-15T21:39:29.518449Z",
          "version": "2.0.3"
        }
      }
    ]
  },
  "published": "2025-12-30T13:16:10.300",
  "references": [
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/0c05493341d6f2097f75f0a5dbb7b53a9e8c5f6c"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/18e27df4f2b4e257c317ba8076f31a888f6cc64b"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/375806616f8c772c33d40e112530887b37c1a816"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/66f3e55960698c874b0598277913b478ecd29573"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/720a297b334e85d34099e83d1f375b92c3efedd6"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/b653289ca6460a6552c8590b75dfa84a0140a46b"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/bd70d0b28010d560a8be96b44fea86fe2ba016ae"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/dfe2aeb226fd5e19b0ee795f4f6ed8bc494c1534"
    }
  ],
  "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
  "vulnStatus": "Deferred"
}



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