FKIE_CVE-2023-54220

Vulnerability from fkie_nvd - Published: 2025-12-30 13:16 - Updated: 2026-06-17 06:47
Severity
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
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{
  "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()."
    }
  ],
  "id": "CVE-2023-54220",
  "lastModified": "2026-06-17T06:47:02.410",
  "metrics": {},
  "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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