CVE-2026-98750 (GCVE-0-2026-98750)
Vulnerability from cvelistv5
Published
2026-10-18 15:47
Modified
2026-10-30 12:39
Severity ?
Summary
In the Linux kernel, the following vulnerability has been resolved: tty: fix saved termios reset race Resetting saved termios state on device registration is needed where a minor number can be reused for an entirely different device and where the old settings may prevent the port from even being opened (e.g. when CLOCAL is not set). Not all TTY drivers guarantee that the minor number is no longer in use when registering devices however, something which can lead to a use-after-free when closing a TTY (and saving its termios) races with re-registration. Add a new TTY_DRIVER_RESET_SAVED_TERMIOS flag to request that any saved termios state is reset on registration and only set it for drivers that make sure that the minor number is no longer in use.
References
Impacted products
Vendor Product Version
Linux Linux Version: 93857edd9829e144acb6c7e72d593f6e01aead66
Version: 93857edd9829e144acb6c7e72d593f6e01aead66
Version: 93857edd9829e144acb6c7e72d593f6e01aead66
Version: 93857edd9829e144acb6c7e72d593f6e01aead66
Version: 93857edd9829e144acb6c7e72d593f6e01aead66
Version: 93857edd9829e144acb6c7e72d593f6e01aead66
Version: 93857edd9829e144acb6c7e72d593f6e01aead66
Version: 93857edd9829e144acb6c7e72d593f6e01aead66
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{
  "containers": {
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          "programFiles": [
            "drivers/staging/greybus/uart.c",
            "drivers/tty/tty_io.c",
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            "drivers/usb/serial/usb-serial.c",
            "include/linux/tty_driver.h"
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            "drivers/usb/serial/usb-serial.c",
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          ],
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          "vendor": "Linux",
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      "cpeApplicability": [
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      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\ntty: fix saved termios reset race\n\nResetting saved termios state on device registration is needed where a\nminor number can be reused for an entirely different device and where\nthe old settings may prevent the port from even being opened (e.g. when\nCLOCAL is not set).\n\nNot all TTY drivers guarantee that the minor number is no longer in use\nwhen registering devices however, something which can lead to a\nuse-after-free when closing a TTY (and saving its termios) races with\nre-registration.\n\nAdd a new TTY_DRIVER_RESET_SAVED_TERMIOS flag to request that any saved\ntermios state is reset on registration and only set it for drivers that\nmake sure that the minor number is no longer in use."
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-10-30T12:39:20.512Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
        {
          "url": "https://git.kernel.org/stable/c/15ddaf908a8eee14e1872ff9c4cdb73562634e7e"
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          "url": "https://git.kernel.org/stable/c/bcb9b5df70d439f3c9d5a2d7f359dd7ab117bee0"
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        {
          "url": "https://git.kernel.org/stable/c/33048616c4e22930e8769b8d14ee8a0dc5a80ceb"
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        {
          "url": "https://git.kernel.org/stable/c/6b4e15cccfbe03b7c6ae60ff570c401bfb1e51d6"
        },
        {
          "url": "https://git.kernel.org/stable/c/1572d86bcf0bcb848d20fc5e5de7ed6963034c2b"
        },
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          "url": "https://git.kernel.org/stable/c/08bf919f041af9de372428bb0c938157ea144164"
        },
        {
          "url": "https://git.kernel.org/stable/c/dcaf0251f847a45861e94c6617024a9455687d2f"
        },
        {
          "url": "https://git.kernel.org/stable/c/8df07fe93573e9e548d6645273e9bcb6eb74059e"
        }
      ],
      "title": "tty: fix saved termios reset race",
      "x_generator": {
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      }
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  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2026-98750",
    "datePublished": "2026-10-18T15:47:35.167Z",
    "dateReserved": "2026-09-25T10:25:14.368Z",
    "dateUpdated": "2026-10-30T12:39:20.512Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}


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