{
  "schemaVersion": 1,
  "attribution": [
    {
      "source": "CISA Known Exploited Vulnerabilities",
      "url": "https://www.cisa.gov/known-exploited-vulnerabilities-catalog",
      "licence": "US government work"
    },
    {
      "source": "GitHub Advisory Database",
      "url": "https://github.com/advisories",
      "licence": "CC BY 4.0"
    },
    {
      "source": "Have I Been Pwned",
      "url": "https://haveibeenpwned.com/",
      "licence": "CC BY 4.0"
    },
    {
      "source": "CVE Program (CVE records)",
      "url": "https://www.cve.org/Legal/TermsOfUse",
      "licence": "CVE Terms of Use",
      "notice": "Copyright © 1999-2026, The MITRE Corporation. CVE is a trademark and the CVE logo is a registered trademark of The MITRE Corporation.",
      "terms": "CVE Usage: MITRE hereby grants you a perpetual, worldwide, non-exclusive, no-charge, royalty-free, irrevocable copyright license to reproduce, prepare derivative works of, publicly display, publicly perform, sublicense, and distribute Common Vulnerabilities and Exposures (CVE™). Any copy you make for such purposes is authorized provided that you reproduce MITRE's copyright designation and this license in any such copy."
    },
    {
      "source": "FIRST EPSS",
      "url": "https://www.first.org/epss/",
      "licence": "free to use; FIRST requests attribution"
    }
  ],
  "record": {
    "id": "CVE-2023-53094",
    "sourceURL": "https://www.cve.org/CVERecord?id=CVE-2023-53094",
    "idYear": 2023,
    "status": "PUBLISHED",
    "publishedAt": "2025-05-02T15:55:39.045Z",
    "updatedAt": "2026-08-05T09:12:45.604Z",
    "importedAt": "2026-10-24T01:57:03.413Z",
    "snapshot": {
      "id": "cve_2026-10-24_midnight_baseline",
      "at": "2026-10-24T00:00:00.000Z",
      "source": "https://github.com/CVEProject/cvelistV5/releases/tag/cve_2026-10-24_0100Z"
    },
    "facts": {
      "title": "tty: serial: fsl_lpuart: fix race on RX DMA shutdown",
      "summary": "In the Linux kernel, the following vulnerability has been resolved:\n\ntty: serial: fsl_lpuart: fix race on RX DMA shutdown\n\nFrom time to time DMA completion can come in the middle of DMA shutdown:\n\n<process ctx>:\t\t\t\t<IRQ>:\nlpuart32_shutdown()\n  lpuart_dma_shutdown()\n    del_timer_sync()\n\t\t\t\t\tlpuart_dma_rx_complete()\n\t\t\t\t\t  lpuart_copy_rx_to_tty()\n\t\t\t\t\t    mod_timer()\n    lpuart_dma_rx_free()\n\nWhen the timer fires a bit later, sport->dma_rx_desc is NULL:\n\nUnable to handle kernel NULL pointer dereference at virtual address 0000000000000004\npc : lpuart_copy_rx_to_tty+0xcc/0x5bc\nlr : lpuart_timer_func+0x1c/0x2c\nCall trace:\n lpuart_copy_rx_to_tty\n lpuart_timer_func\n call_timer_fn\n __run_timers.part.0\n run_timer_softirq\n __do_softirq\n __irq_exit_rcu\n irq_exit\n handle_domain_irq\n gic_handle_irq\n call_on_irq_stack\n do_interrupt_handler\n ...\n\nTo fix this fold del_timer_sync() into lpuart_dma_rx_free() after\ndmaengine_terminate_sync() to make sure timer will not be re-started in\nlpuart_copy_rx_to_tty() <= lpuart_dma_rx_complete().",
      "affected": [
        {
          "vendor": "Linux",
          "product": "Linux",
          "defaultStatus": "unaffected",
          "versions": [
            {
              "version": "4a8588a1cf867333187d9ff071e6fbdab587d194",
              "status": "affected",
              "versionType": "git",
              "lessThan": "19a98d56dfedafb25652bdb9cd48a4e73ceba702"
            },
            {
              "version": "4a8588a1cf867333187d9ff071e6fbdab587d194",
              "status": "affected",
              "versionType": "git",
              "lessThan": "90530e7214c8a04dcdde57502d93fa96af288c38"
            },
            {
              "version": "4a8588a1cf867333187d9ff071e6fbdab587d194",
              "status": "affected",
              "versionType": "git",
              "lessThan": "954fc9931f0aabf272b5674cf468affdd88d3a36"
            },
            {
              "version": "4a8588a1cf867333187d9ff071e6fbdab587d194",
              "status": "affected",
              "versionType": "git",
              "lessThan": "2a36b444cace9580380467fd1183bb5e85bcc80a"
            },
            {
              "version": "4a8588a1cf867333187d9ff071e6fbdab587d194",
              "status": "affected",
              "versionType": "git",
              "lessThan": "1be6f2b15f902c02e055ae0b419ca789200473c9"
            },
            {
              "version": "5716a781032693d0f812ed06528d98195e9df028",
              "status": "affected",
              "versionType": "git"
            },
            {
              "version": "0d5cb6e8b4b62d8efd1a470615894276341d6db9",
              "status": "affected",
              "versionType": "git"
            },
            {
              "version": "3.18.9",
              "status": "affected",
              "versionType": "semver",
              "lessThan": "3.19"
            },
            {
              "version": "3.19.1",
              "status": "affected",
              "versionType": "semver",
              "lessThan": "3.20"
            }
          ]
        },
        {
          "vendor": "Linux",
          "product": "Linux",
          "defaultStatus": "affected",
          "versions": [
            {
              "version": "4.0",
              "status": "affected"
            },
            {
              "version": "0",
              "status": "unaffected",
              "versionType": "semver",
              "lessThan": "4.0"
            },
            {
              "version": "5.10.177",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "5.10.*"
            },
            {
              "version": "5.15.105",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "5.15.*"
            },
            {
              "version": "6.1.23",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "6.1.*"
            },
            {
              "version": "6.2.8",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "6.2.*"
            },
            {
              "version": "6.3",
              "status": "unaffected",
              "versionType": "original_commit_for_fix",
              "lessThanOrEqual": "*"
            }
          ]
        }
      ]
    }
  }
}