CVE-2024-36940 pinctrl: core: delete incorrect free in pinctrl_enable()

2024-05-3015:29:28

Linux

www.cve.org

pinctrl

core

pctldev

devm

double free

vulnerability

resolution

linux kernel

7.5 High

AI Score

Confidence

High

0.0004 Low

EPSS

Percentile

13.2%

JSON

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

pinctrl: core: delete incorrect free in pinctrl_enable()

The “pctldev” struct is allocated in devm_pinctrl_register_and_init().
It’s a devm_ managed pointer that is freed by devm_pinctrl_dev_release(),
so freeing it in pinctrl_enable() will lead to a double free.

The devm_pinctrl_dev_release() function frees the pindescs and destroys
the mutex as well.

CNA Affected

[
  {
    "product": "Linux",
    "vendor": "Linux",
    "defaultStatus": "unaffected",
    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
    "programFiles": [
      "drivers/pinctrl/core.c"
    ],
    "versions": [
      {
        "version": "6118714275f0",
        "lessThan": "735f4c6b6771",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "6118714275f0",
        "lessThan": "cdaa171473d9",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "6118714275f0",
        "lessThan": "288bc4aa75f1",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "6118714275f0",
        "lessThan": "41f88ef8ba38",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "6118714275f0",
        "lessThan": "ac7d65795827",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "6118714275f0",
        "lessThan": "558c8039fdf5",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "6118714275f0",
        "lessThan": "f9f1e321d53e",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "6118714275f0",
        "lessThan": "5038a66dad01",
        "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/pinctrl/core.c"
    ],
    "versions": [
      {
        "version": "4.11",
        "status": "affected"
      },
      {
        "version": "0",
        "lessThan": "4.11",
        "status": "unaffected",
        "versionType": "custom"
      },
      {
        "version": "4.19.314",
        "lessThanOrEqual": "4.19.*",
        "status": "unaffected",
        "versionType": "custom"
      },
      {
        "version": "5.4.276",
        "lessThanOrEqual": "5.4.*",
        "status": "unaffected",
        "versionType": "custom"
      },
      {
        "version": "5.10.217",
        "lessThanOrEqual": "5.10.*",
        "status": "unaffected",
        "versionType": "custom"
      },
      {
        "version": "5.15.159",
        "lessThanOrEqual": "5.15.*",
        "status": "unaffected",
        "versionType": "custom"
      },
      {
        "version": "6.1.91",
        "lessThanOrEqual": "6.1.*",
        "status": "unaffected",
        "versionType": "custom"
      },
      {
        "version": "6.6.31",
        "lessThanOrEqual": "6.6.*",
        "status": "unaffected",
        "versionType": "custom"
      },
      {
        "version": "6.8.10",
        "lessThanOrEqual": "6.8.*",
        "status": "unaffected",
        "versionType": "custom"
      },
      {
        "version": "6.9",
        "lessThanOrEqual": "*",
        "status": "unaffected",
        "versionType": "original_commit_for_fix"
      }
    ]
  }
]