CVE-2021-46934 i2c: validate user data in compat ioctl

2024-02-2709:44:01

Linux

www.cve.org

linux kernel

i2c

user data

validation

warnings

5.6 Medium

AI Score

Confidence

High

0.0004 Low

EPSS

Percentile

15.7%

JSON

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

i2c: validate user data in compat ioctl

Wrong user data may cause warning in i2c_transfer(), ex: zero msgs.
Userspace should not be able to trigger warnings, so this patch adds
validation checks for user data in compact ioctl to prevent reported
warnings

CNA Affected

[
  {
    "product": "Linux",
    "vendor": "Linux",
    "defaultStatus": "unaffected",
    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
    "programFiles": [
      "drivers/i2c/i2c-dev.c"
    ],
    "versions": [
      {
        "version": "7d5cb45655f2",
        "lessThan": "407c8708fb1b",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "7d5cb45655f2",
        "lessThan": "9e4a3f47eff4",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "7d5cb45655f2",
        "lessThan": "8d31cbab4c29",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "7d5cb45655f2",
        "lessThan": "f68599581067",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "7d5cb45655f2",
        "lessThan": "bb436283e25a",
        "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/i2c/i2c-dev.c"
    ],
    "versions": [
      {
        "version": "4.15",
        "status": "affected"
      },
      {
        "version": "0",
        "lessThan": "4.15",
        "status": "unaffected",
        "versionType": "custom"
      },
      {
        "version": "4.19.224",
        "lessThanOrEqual": "4.19.*",
        "status": "unaffected",
        "versionType": "custom"
      },
      {
        "version": "5.4.170",
        "lessThanOrEqual": "5.4.*",
        "status": "unaffected",
        "versionType": "custom"
      },
      {
        "version": "5.10.90",
        "lessThanOrEqual": "5.10.*",
        "status": "unaffected",
        "versionType": "custom"
      },
      {
        "version": "5.15.13",
        "lessThanOrEqual": "5.15.*",
        "status": "unaffected",
        "versionType": "custom"
      },
      {
        "version": "5.16",
        "lessThanOrEqual": "*",
        "status": "unaffected",
        "versionType": "original_commit_for_fix"
      }
    ]
  }
]