CVE-2026-90335

Full vulnerability record from the local CVENow database.

Description

In the Linux kernel, the following vulnerability has been resolved: tty: skip cdev_del() when no cdev is registered TTY device registration can fail before a cdev is allocated. Serial core keeps the port so setserial can still use it, and later removal passes the NULL cdev slot to cdev_del(), causing a NULL-pointer dereference. Only delete the cdev when the slot is not NULL.

Severity

Not scored

CVSS score

Not available

Vulnerability status

Received

Source identifier

416baaa9-dc9f-4396-8d5f-8c081fb06d67

Published

2026-09-17 17:17:32.073000

Last modified

2026-10-30 13:20:50.077000

View original CVE JSON

{
  "id": "CVE-2026-90335",
  "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
  "published": "2026-09-17T17:17:32.073",
  "lastModified": "2026-10-30T13:20:50.077",
  "vulnStatus": "Received",
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "In the Linux kernel, the following vulnerability has been resolved:\n\ntty: skip cdev_del() when no cdev is registered\n\nTTY device registration can fail before a cdev is allocated.\nSerial core keeps the port so setserial can still use it, and later\nremoval passes the NULL cdev slot to cdev_del(), causing a NULL-pointer\ndereference.\n\nOnly delete the cdev when the slot is not NULL."
    }
  ],
  "affected": [
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "affectedData": [
        {
          "vendor": "Linux",
          "product": "Linux",
          "defaultStatus": "unaffected",
          "programFiles": [
            "drivers/tty/tty_io.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "versions": [
            {
              "version": "a3a10ce3429e5dee623ad5c8407ea58e204fcb0a",
              "lessThan": "6c92b8d9c23a92f85b20bee3578d0f19cd1b1a68",
              "versionType": "git",
              "status": "affected"
            },
            {
              "version": "a3a10ce3429e5dee623ad5c8407ea58e204fcb0a",
              "lessThan": "ea3d2fae7c1d6492145976553817d22e8ef69a0e",
              "versionType": "git",
              "status": "affected"
            },
            {
              "version": "a3a10ce3429e5dee623ad5c8407ea58e204fcb0a",
              "lessThan": "21031bd0d662549412378110c989b164feb6e4be",
              "versionType": "git",
              "status": "affected"
            },
            {
              "version": "a3a10ce3429e5dee623ad5c8407ea58e204fcb0a",
              "lessThan": "2af4c46b429907edc8cb069c78fca1d950120b98",
              "versionType": "git",
              "status": "affected"
            },
            {
              "version": "a3a10ce3429e5dee623ad5c8407ea58e204fcb0a",
              "lessThan": "3dbf85ef40b6366ba15e882f7536cdc98bea579a",
              "versionType": "git",
              "status": "affected"
            },
            {
              "version": "a3a10ce3429e5dee623ad5c8407ea58e204fcb0a",
              "lessThan": "c3b5623fd97648f2747444aa8932ae604662df93",
              "versionType": "git",
              "status": "affected"
            }
          ]
        },
        {
          "vendor": "Linux",
          "product": "Linux",
          "defaultStatus": "affected",
          "programFiles": [
            "drivers/tty/tty_io.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "versions": [
            {
              "version": "4.3",
              "status": "affected"
            },
            {
              "version": "0",
              "lessThan": "4.3",
              "versionType": "semver",
              "status": "unaffected"
            },
            {
              "version": "6.1.191",
              "lessThanOrEqual": "6.1.*",
              "versionType": "semver",
              "status": "unaffected"
            },
            {
              "version": "6.6.160",
              "lessThanOrEqual": "6.6.*",
              "versionType": "semver",
              "status": "unaffected"
            },
            {
              "version": "6.12.114",
              "lessThanOrEqual": "6.12.*",
              "versionType": "semver",
              "status": "unaffected"
            },
            {
              "version": "6.18.57",
              "lessThanOrEqual": "6.18.*",
              "versionType": "semver",
              "status": "unaffected"
            },
            {
              "version": "7.2.6",
              "lessThanOrEqual": "7.2.*",
              "versionType": "semver",
              "status": "unaffected"
            },
            {
              "version": "7.3",
              "lessThanOrEqual": "*",
              "versionType": "original_commit_for_fix",
              "status": "unaffected"
            }
          ]
        }
      ]
    }
  ],
  "metrics": {},
  "references": [
    {
      "url": "https://git.kernel.org/stable/c/21031bd0d662549412378110c989b164feb6e4be",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/2af4c46b429907edc8cb069c78fca1d950120b98",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/3dbf85ef40b6366ba15e882f7536cdc98bea579a",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/6c92b8d9c23a92f85b20bee3578d0f19cd1b1a68",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/c3b5623fd97648f2747444aa8932ae604662df93",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/ea3d2fae7c1d6492145976553817d22e8ef69a0e",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    }
  ]
}