CVE-2026-98750

Status: ReceivedUnscored—

Severity—Unscored

Exploitation probability0.17 %higher than 6% of CVEs

Active exploitationNonot in the CISA catalog

Public exploitNot knownno public code found

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.

CVSS

NVD hasn't assigned a CVSS score to this CVE (common since the April 2026 policy change).

Exploitation probability (EPSS)

Probability of exploitation in the next 30 days: 0.17 %
Percentile among all scored CVEs: 6
Score date: 10/20/2026

EPSS (Exploit Prediction Scoring System, FIRST) estimates how likely a vulnerability is to be exploited in the wild within 30 days. It complements CVSS (impact) and CISA KEV (confirmed exploitation).

Affected technologies (1)

⚠ AI-inferred from the description — NVD hasn't analyzed this CVE yet, these aren't verified CPEs.

Linux — Linux Kernel^AI

References

Show 4 references

Raw JSON (NVD)

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{
  "id": "CVE-2026-98750",
  "cveTags": [],
  "metrics": {},
  "affected": [
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "affectedData": [
        {
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "product": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "93857edd9829e144acb6c7e72d593f6e01aead66",
              "lessThan": "1572d86bcf0bcb848d20fc5e5de7ed6963034c2b",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "93857edd9829e144acb6c7e72d593f6e01aead66",
              "lessThan": "08bf919f041af9de372428bb0c938157ea144164",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "93857edd9829e144acb6c7e72d593f6e01aead66",
              "lessThan": "dcaf0251f847a45861e94c6617024a9455687d2f",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "93857edd9829e144acb6c7e72d593f6e01aead66",
              "lessThan": "8df07fe93573e9e548d6645273e9bcb6eb74059e",
              "versionType": "git"
            }
          ],
          "programFiles": [
            "drivers/staging/greybus/uart.c",
            "drivers/tty/tty_io.c",
            "drivers/usb/class/cdc-acm.c",
            "drivers/usb/serial/usb-serial.c",
            "include/linux/tty_driver.h"
          ],
          "defaultStatus": "unaffected"
        },
        {
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "product": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "4.12"
            },
            {
              "status": "unaffected",
              "version": "0",
              "lessThan": "4.12",
              "versionType": "semver"
            },
            {
              "status": "unaffected",
              "version": "6.12.113",
              "versionType": "semver",
              "lessThanOrEqual": "6.12.*"
            },
            {
              "status": "unaffected",
              "version": "6.18.56",
              "versionType": "semver",
              "lessThanOrEqual": "6.18.*"
            },
            {
              "status": "unaffected",
              "version": "7.2.10",
              "versionType": "semver",
              "lessThanOrEqual": "7.2.*"
            },
            {
              "status": "unaffected",
              "version": "7.3",
              "versionType": "original_commit_for_fix",
              "lessThanOrEqual": "*"
            }
          ],
          "programFiles": [
            "drivers/staging/greybus/uart.c",
            "drivers/tty/tty_io.c",
            "drivers/usb/class/cdc-acm.c",
            "drivers/usb/serial/usb-serial.c",
            "include/linux/tty_driver.h"
          ],
          "defaultStatus": "affected"
        }
      ]
    }
  ],
  "published": "2026-10-18T16:17:28.767",
  "references": [
    {
      "url": "https://git.kernel.org/stable/c/08bf919f041af9de372428bb0c938157ea144164",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/1572d86bcf0bcb848d20fc5e5de7ed6963034c2b",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/8df07fe93573e9e548d6645273e9bcb6eb74059e",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/dcaf0251f847a45861e94c6617024a9455687d2f",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    }
  ],
  "vulnStatus": "Received",
  "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."
    }
  ],
  "lastModified": "2026-10-19T10:19:39.160",
  "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
}