CVE-2023-52693 ACPI: video: check for error while searching for backlight device parent

2024-05-1714:27:26

Linux

www.cve.org

linux kernel

acpi

vulnerability

error

parent device

svace

6.4 Medium

AI Score

Confidence

Low

0.0004 Low

EPSS

Percentile

13.0%

JSON

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

ACPI: video: check for error while searching for backlight device parent

If acpi_get_parent() called in acpi_video_dev_register_backlight()
fails, for example, because acpi_ut_acquire_mutex() fails inside
acpi_get_parent), this can lead to incorrect (uninitialized)
acpi_parent handle being passed to acpi_get_pci_dev() for detecting
the parent pci device.

Check acpi_get_parent() result and set parent device only in case of success.

Found by Linux Verification Center (linuxtesting.org) with SVACE.

CNA Affected

[
  {
    "product": "Linux",
    "vendor": "Linux",
    "defaultStatus": "unaffected",
    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
    "programFiles": [
      "drivers/acpi/acpi_video.c"
    ],
    "versions": [
      {
        "version": "9661e92c10a9",
        "lessThan": "556f02699d33",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "9661e92c10a9",
        "lessThan": "1e3a2b9b4039",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "9661e92c10a9",
        "lessThan": "c4e1a0ef0b47",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "9661e92c10a9",
        "lessThan": "3a370502a568",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "9661e92c10a9",
        "lessThan": "2124c5bc2294",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "9661e92c10a9",
        "lessThan": "39af144b6d01",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "9661e92c10a9",
        "lessThan": "72884ce4e104",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "9661e92c10a9",
        "lessThan": "ccd45faf4973",
        "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/acpi/acpi_video.c"
    ],
    "versions": [
      {
        "version": "2.6.39",
        "status": "affected"
      },
      {
        "version": "0",
        "lessThan": "2.6.39",
        "status": "unaffected",
        "versionType": "custom"
      },
      {
        "version": "4.19.306",
        "lessThanOrEqual": "4.19.*",
        "status": "unaffected",
        "versionType": "custom"
      },
      {
        "version": "5.4.268",
        "lessThanOrEqual": "5.4.*",
        "status": "unaffected",
        "versionType": "custom"
      },
      {
        "version": "5.10.209",
        "lessThanOrEqual": "5.10.*",
        "status": "unaffected",
        "versionType": "custom"
      },
      {
        "version": "5.15.148",
        "lessThanOrEqual": "5.15.*",
        "status": "unaffected",
        "versionType": "custom"
      },
      {
        "version": "6.1.75",
        "lessThanOrEqual": "6.1.*",
        "status": "unaffected",
        "versionType": "custom"
      },
      {
        "version": "6.6.14",
        "lessThanOrEqual": "6.6.*",
        "status": "unaffected",
        "versionType": "custom"
      },
      {
        "version": "6.7.2",
        "lessThanOrEqual": "6.7.*",
        "status": "unaffected",
        "versionType": "custom"
      },
      {
        "version": "6.8",
        "lessThanOrEqual": "*",
        "status": "unaffected",
        "versionType": "original_commit_for_fix"
      }
    ]
  }
]