CVE-2021-47051 spi: fsl-lpspi: Fix PM reference leak in lpspi_prepare_xfer_hardware()

2024-02-2808:13:53

Linux

www.cve.org

linux kernel

fsl-lpspi

pm reference leak

AI Score

6.6

Confidence

Low

EPSS

Percentile

15.5%

JSON

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

spi: fsl-lpspi: Fix PM reference leak in lpspi_prepare_xfer_hardware()

pm_runtime_get_sync will increment pm usage counter even it failed.
Forgetting to putting operation will result in reference leak here.
Fix it by replacing it with pm_runtime_resume_and_get to keep usage
counter balanced.

CNA Affected

[
  {
    "product": "Linux",
    "vendor": "Linux",
    "defaultStatus": "unaffected",
    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
    "programFiles": [
      "drivers/spi/spi-fsl-lpspi.c"
    ],
    "versions": [
      {
        "version": "944c01a889d9",
        "lessThan": "4a01ad002d2e",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "944c01a889d9",
        "lessThan": "ce02e58ddf86",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "944c01a889d9",
        "lessThan": "b8207bfc539c",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "944c01a889d9",
        "lessThan": "6a2b5cee0d31",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "944c01a889d9",
        "lessThan": "a03675497970",
        "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/spi/spi-fsl-lpspi.c"
    ],
    "versions": [
      {
        "version": "5.2",
        "status": "affected"
      },
      {
        "version": "0",
        "lessThan": "5.2",
        "status": "unaffected",
        "versionType": "custom"
      },
      {
        "version": "5.4.119",
        "lessThanOrEqual": "5.4.*",
        "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"
      }
    ]
  }
]