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

2024-02-2617:20:20

Linux

github.com

linux kernel

vulnerability resolved

i2c

use after free

AI Score

6.7

Confidence

Low

SSVC

Exploitation

none

Automatable

Technical Impact

partial

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

[
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    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
    "vendor": "Linux",
    "product": "Linux",
    "versions": [
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        "status": "affected",
        "version": "611e12ea0f12",
        "lessThan": "e6412ba3b650",
        "versionType": "git"
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        "status": "affected",
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        "lessThan": "23a191b132cd",
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    ],
    "programFiles": [
      "drivers/i2c/i2c-core-base.c"
    ],
    "defaultStatus": "unaffected"
  },
  {
    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
    "vendor": "Linux",
    "product": "Linux",
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        "version": "4.3"
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      {
        "status": "unaffected",
        "version": "0",
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        "versionType": "custom"
      },
      {
        "status": "unaffected",
        "version": "4.14.291",
        "versionType": "custom",
        "lessThanOrEqual": "4.14.*"
      },
      {
        "status": "unaffected",
        "version": "4.19.256",
        "versionType": "custom",
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      {
        "status": "unaffected",
        "version": "5.4.211",
        "versionType": "custom",
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      {
        "status": "unaffected",
        "version": "5.10.137",
        "versionType": "custom",
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        "status": "unaffected",
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        "versionType": "custom",
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      {
        "status": "unaffected",
        "version": "5.18.18",
        "versionType": "custom",
        "lessThanOrEqual": "5.18.*"
      },
      {
        "status": "unaffected",
        "version": "5.19.2",
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      {
        "status": "unaffected",
        "version": "6.0",
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        "lessThanOrEqual": "*"
      }
    ],
    "programFiles": [
      "drivers/i2c/i2c-core-base.c"
    ],
    "defaultStatus": "affected"
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]