CVE-2023-52861 drm: bridge: it66121: Fix invalid connector dereference

2024-05-2115:31:53

Linux

www.cve.org

linux kernel

fix

drm vulnerability

it66121

connector

null pointer

sound card

edid

userspace

6.5 Medium

AI Score

Confidence

Low

0.0004 Low

EPSS

Percentile

15.5%

JSON

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

drm: bridge: it66121: Fix invalid connector dereference

Fix the NULL pointer dereference when no monitor is connected, and the
sound card is opened from userspace.

Instead return an empty buffer (of zeroes) as the EDID information to
the sound framework if there is no connector attached.

CNA Affected

[
  {
    "product": "Linux",
    "vendor": "Linux",
    "defaultStatus": "unaffected",
    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
    "programFiles": [
      "drivers/gpu/drm/bridge/ite-it66121.c"
    ],
    "versions": [
      {
        "version": "e0fd83dbe924",
        "lessThan": "2c80c4f0d284",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "e0fd83dbe924",
        "lessThan": "1669d7b21a66",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "e0fd83dbe924",
        "lessThan": "1374561a7cbc",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "e0fd83dbe924",
        "lessThan": "d0375f6858c4",
        "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/gpu/drm/bridge/ite-it66121.c"
    ],
    "versions": [
      {
        "version": "5.19",
        "status": "affected"
      },
      {
        "version": "0",
        "lessThan": "5.19",
        "status": "unaffected",
        "versionType": "custom"
      },
      {
        "version": "6.1.63",
        "lessThanOrEqual": "6.1.*",
        "status": "unaffected",
        "versionType": "custom"
      },
      {
        "version": "6.5.12",
        "lessThanOrEqual": "6.5.*",
        "status": "unaffected",
        "versionType": "custom"
      },
      {
        "version": "6.6.2",
        "lessThanOrEqual": "6.6.*",
        "status": "unaffected",
        "versionType": "custom"
      },
      {
        "version": "6.7",
        "lessThanOrEqual": "*",
        "status": "unaffected",
        "versionType": "original_commit_for_fix"
      }
    ]
  }
]