CVE-2019-25162 i2c: Fix a potential use after free

2024-02-2617:20:20

Linux

www.cve.org

linux kernel

fix

potential use after free

i2c

vulnerability

7.2 High

AI Score

Confidence

High

0.0004 Low

EPSS

Percentile

5.1%

JSON

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

i2c: Fix a potential use after free

Free the adap structure only after we are done using it.
This patch just moves the put_device() down a bit to avoid the
use after free.

[wsa: added comment to the code, added Fixes tag]

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-core-base.c"
    ],
    "versions": [
      {
        "version": "611e12ea0f12",
        "lessThan": "e6412ba3b650",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "611e12ea0f12",
        "lessThan": "23a191b132cd",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "611e12ea0f12",
        "lessThan": "871a1e94929a",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "611e12ea0f12",
        "lessThan": "81cb31756888",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "611e12ea0f12",
        "lessThan": "35927d7509ab",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "611e12ea0f12",
        "lessThan": "e8e1a046cf87",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "611e12ea0f12",
        "lessThan": "12b0606000d0",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "611e12ea0f12",
        "lessThan": "e4c72c06c367",
        "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-core-base.c"
    ],
    "versions": [
      {
        "version": "4.3",
        "status": "affected"
      },
      {
        "version": "0",
        "lessThan": "4.3",
        "status": "unaffected",
        "versionType": "custom"
      },
      {
        "version": "4.14.291",
        "lessThanOrEqual": "4.14.*",
        "status": "unaffected",
        "versionType": "custom"
      },
      {
        "version": "4.19.256",
        "lessThanOrEqual": "4.19.*",
        "status": "unaffected",
        "versionType": "custom"
      },
      {
        "version": "5.4.211",
        "lessThanOrEqual": "5.4.*",
        "status": "unaffected",
        "versionType": "custom"
      },
      {
        "version": "5.10.137",
        "lessThanOrEqual": "5.10.*",
        "status": "unaffected",
        "versionType": "custom"
      },
      {
        "version": "5.15.61",
        "lessThanOrEqual": "5.15.*",
        "status": "unaffected",
        "versionType": "custom"
      },
      {
        "version": "5.18.18",
        "lessThanOrEqual": "5.18.*",
        "status": "unaffected",
        "versionType": "custom"
      },
      {
        "version": "5.19.2",
        "lessThanOrEqual": "5.19.*",
        "status": "unaffected",
        "versionType": "custom"
      },
      {
        "version": "6.0",
        "lessThanOrEqual": "*",
        "status": "unaffected",
        "versionType": "original_commit_for_fix"
      }
    ]
  }
]