CVE-2022-48703 thermal/int340x_thermal: handle data_vault when the value is ZERO_SIZE_PTR

2024-05-0315:14:07

Linux

github.com

linux kernel

vulnerability

fixed

thermal/int340x_thermal

data_vault

zero length buffer

6.9 Medium

AI Score

Confidence

Low

0.0004 Low

EPSS

Percentile

9.1%

JSON

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

thermal/int340x_thermal: handle data_vault when the value is ZERO_SIZE_PTR

In some case, the GDDV returns a package with a buffer which has
zero length. It causes that kmemdup() returns ZERO_SIZE_PTR (0x10).

Then the data_vault_read() got NULL point dereference problem when
accessing the 0x10 value in data_vault.

[ 71.024560] BUG: kernel NULL pointer dereference, address:
0000000000000010

This patch uses ZERO_OR_NULL_PTR() for checking ZERO_SIZE_PTR or
NULL value in data_vault.

CNA Affected

[
  {
    "product": "Linux",
    "vendor": "Linux",
    "defaultStatus": "unaffected",
    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
    "programFiles": [
      "drivers/thermal/intel/int340x_thermal/int3400_thermal.c"
    ],
    "versions": [
      {
        "version": "1da177e4c3f4",
        "lessThan": "dae42083b045",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "1da177e4c3f4",
        "lessThan": "7931e28098a4",
        "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/thermal/intel/int340x_thermal/int3400_thermal.c"
    ],
    "versions": [
      {
        "version": "5.19.9",
        "lessThanOrEqual": "5.19.*",
        "status": "unaffected",
        "versionType": "custom"
      },
      {
        "version": "6.0",
        "lessThanOrEqual": "*",
        "status": "unaffected",
        "versionType": "original_commit_for_fix"
      }
    ]
  }
]