CVE-2023-52863 hwmon: (axi-fan-control) Fix possible NULL pointer dereference

2024-05-2115:31:55

Linux

github.com

linux kernel

vulnerability

hwmon

axi-fan-control

AI Score

6.8

Confidence

Low

SSVC

Exploitation

none

Automatable

Technical Impact

partial

JSON

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

hwmon: (axi-fan-control) Fix possible NULL pointer dereference

axi_fan_control_irq_handler(), dependent on the private
axi_fan_control_data structure, might be called before the hwmon
device is registered. That will cause an “Unable to handle kernel
NULL pointer dereference” error.

CNA Affected

[
  {
    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
    "vendor": "Linux",
    "product": "Linux",
    "versions": [
      {
        "status": "affected",
        "version": "8412b410fa5e",
        "lessThan": "7d870088db48",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "8412b410fa5e",
        "lessThan": "b3e7eb23a6e9",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "8412b410fa5e",
        "lessThan": "33de53a27060",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "8412b410fa5e",
        "lessThan": "f62b89698478",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "8412b410fa5e",
        "lessThan": "c49f14cc1bb1",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "8412b410fa5e",
        "lessThan": "2a5b3370a1d9",
        "versionType": "git"
      }
    ],
    "programFiles": [
      "drivers/hwmon/axi-fan-control.c"
    ],
    "defaultStatus": "unaffected"
  },
  {
    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
    "vendor": "Linux",
    "product": "Linux",
    "versions": [
      {
        "status": "affected",
        "version": "5.7"
      },
      {
        "status": "unaffected",
        "version": "0",
        "lessThan": "5.7",
        "versionType": "custom"
      },
      {
        "status": "unaffected",
        "version": "5.10.201",
        "versionType": "custom",
        "lessThanOrEqual": "5.10.*"
      },
      {
        "status": "unaffected",
        "version": "5.15.139",
        "versionType": "custom",
        "lessThanOrEqual": "5.15.*"
      },
      {
        "status": "unaffected",
        "version": "6.1.63",
        "versionType": "custom",
        "lessThanOrEqual": "6.1.*"
      },
      {
        "status": "unaffected",
        "version": "6.5.12",
        "versionType": "custom",
        "lessThanOrEqual": "6.5.*"
      },
      {
        "status": "unaffected",
        "version": "6.6.2",
        "versionType": "custom",
        "lessThanOrEqual": "6.6.*"
      },
      {
        "status": "unaffected",
        "version": "6.7",
        "versionType": "original_commit_for_fix",
        "lessThanOrEqual": "*"
      }
    ],
    "programFiles": [
      "drivers/hwmon/axi-fan-control.c"
    ],
    "defaultStatus": "affected"
  }
]