CVE-2021-47067 soc/tegra: regulators: Fix locking up when voltage-spread is out of range

2024-02-2922:37:40

Linux

www.cve.org

linux kernel

vulnerability

resolution

voltage-spread

locking up

regulators

bug

code

max-spread

cpu regulator

tegra30 ouya

game console

dvfs

device-tree

AI Score

6.6

Confidence

Low

EPSS

Percentile

15.5%

JSON

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

soc/tegra: regulators: Fix locking up when voltage-spread is out of range

Fix voltage coupler lockup which happens when voltage-spread is out
of range due to a bug in the code. The max-spread requirement shall be
accounted when CPU regulator doesn’t have consumers. This problem is
observed on Tegra30 Ouya game console once system-wide DVFS is enabled
in a device-tree.

CNA Affected

[
  {
    "product": "Linux",
    "vendor": "Linux",
    "defaultStatus": "unaffected",
    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
    "programFiles": [
      "drivers/soc/tegra/regulators-tegra30.c"
    ],
    "versions": [
      {
        "version": "783807436f36",
        "lessThan": "a1ad124c8368",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "783807436f36",
        "lessThan": "dc4452867200",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "783807436f36",
        "lessThan": "ff39adf5d31c",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "783807436f36",
        "lessThan": "ef85bb582c41",
        "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/soc/tegra/regulators-tegra30.c"
    ],
    "versions": [
      {
        "version": "5.5",
        "status": "affected"
      },
      {
        "version": "0",
        "lessThan": "5.5",
        "status": "unaffected",
        "versionType": "custom"
      },
      {
        "version": "5.10.37",
        "lessThanOrEqual": "5.10.*",
        "status": "unaffected",
        "versionType": "custom"
      },
      {
        "version": "5.11.21",
        "lessThanOrEqual": "5.11.*",
        "status": "unaffected",
        "versionType": "custom"
      },
      {
        "version": "5.12.4",
        "lessThanOrEqual": "5.12.*",
        "status": "unaffected",
        "versionType": "custom"
      },
      {
        "version": "5.13",
        "lessThanOrEqual": "*",
        "status": "unaffected",
        "versionType": "original_commit_for_fix"
      }
    ]
  }
]