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CVE-2026-74653 serial: 8250_of: clear stuck empty-FIFO RX-timeout on LPC32xx

🗓️ 22 Aug 2026 15:32:28Reported by LinuxType 
cvelist
 cvelist
🔗 www.cve.org👁 31 Views

Linux 8250_of serial driver livelock on NXP LPC32xx from stuck RX-timeout interrupt with empty FIFO.

Related
Affected
Refs
[
  {
    "product": "Linux",
    "vendor": "Linux",
    "defaultStatus": "unaffected",
    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
    "programFiles": [
      "drivers/tty/serial/8250/8250_of.c"
    ],
    "versions": [
      {
        "version": "e6e912c4964ce5976e508881207dfa96d5f856d7",
        "lessThan": "c321dc5172c8c66e21ffbeeb7a2ebb88ae6fd4c3",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "e6e912c4964ce5976e508881207dfa96d5f856d7",
        "lessThan": "3ce24bc4d115336218e59b7e286fd3a79f4fc4c6",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "e6e912c4964ce5976e508881207dfa96d5f856d7",
        "lessThan": "7795e8abedc86438cae0454602cbf9038b94bf38",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "e6e912c4964ce5976e508881207dfa96d5f856d7",
        "lessThan": "1423415471274abda87024967d7fe2206ceee0ea",
        "status": "affected",
        "versionType": "git"
      }
    ]
  },
  {
    "product": "Linux",
    "vendor": "Linux",
    "defaultStatus": "affected",
    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
    "programFiles": [
      "drivers/tty/serial/8250/8250_of.c"
    ],
    "versions": [
      {
        "version": "2.6.36",
        "status": "affected"
      },
      {
        "version": "0",
        "lessThan": "2.6.36",
        "status": "unaffected",
        "versionType": "semver"
      },
      {
        "version": "6.12.106",
        "lessThanOrEqual": "6.12.*",
        "status": "unaffected",
        "versionType": "semver"
      },
      {
        "version": "6.18.45",
        "lessThanOrEqual": "6.18.*",
        "status": "unaffected",
        "versionType": "semver"
      },
      {
        "version": "7.1.9",
        "lessThanOrEqual": "7.1.*",
        "status": "unaffected",
        "versionType": "semver"
      },
      {
        "version": "7.2",
        "lessThanOrEqual": "*",
        "status": "unaffected",
        "versionType": "original_commit_for_fix"
      }
    ]
  }
]

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