CVE-2021-47526 serial: liteuart: Fix NULL pointer dereference in ->remove()

2024-05-2415:09:38

Linux

www.cve.org

linux kernel

vulnerability resolved

drvdata set

platform_get_drvdata

pointer dereference

cve

driver

AI Score

6.4

Confidence

Low

EPSS

Percentile

9.0%

JSON

In the Linux kernel, the following vulnerability has been resolved:

serial: liteuart: Fix NULL pointer dereference in ->remove()

drvdata has to be set in _probe() - otherwise platform_get_drvdata()
causes null pointer dereference BUG in _remove().

CNA Affected

[
  {
    "product": "Linux",
    "vendor": "Linux",
    "defaultStatus": "unaffected",
    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
    "programFiles": [
      "drivers/tty/serial/liteuart.c"
    ],
    "versions": [
      {
        "version": "1da81e5562fa",
        "lessThan": "189c99c629bb",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "1da81e5562fa",
        "lessThan": "0f55f89d98c8",
        "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/liteuart.c"
    ],
    "versions": [
      {
        "version": "5.11",
        "status": "affected"
      },
      {
        "version": "0",
        "lessThan": "5.11",
        "status": "unaffected",
        "versionType": "custom"
      },
      {
        "version": "5.15.7",
        "lessThanOrEqual": "5.15.*",
        "status": "unaffected",
        "versionType": "custom"
      },
      {
        "version": "5.16",
        "lessThanOrEqual": "*",
        "status": "unaffected",
        "versionType": "original_commit_for_fix"
      }
    ]
  }
]