CVE-2023-52614 PM / devfreq: Fix buffer overflow in trans_stat_show

2024-03-1810:14:44

Linux

github.com

linux kernel

devfreq

buffer overflow

fix

page_size

abi

efbig

AI Score

7.2

Confidence

Low

EPSS

Percentile

10.3%

SSVC

Exploitation

none

Automatable

Technical Impact

partial

JSON

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

PM / devfreq: Fix buffer overflow in trans_stat_show

Fix buffer overflow in trans_stat_show().

Convert simple snprintf to the more secure scnprintf with size of
PAGE_SIZE.

Add condition checking if we are exceeding PAGE_SIZE and exit early from
loop. Also add at the end a warning that we exceeded PAGE_SIZE and that
stats is disabled.

Return -EFBIG in the case where we don’t have enough space to write the
full transition table.

Also document in the ABI that this function can return -EFBIG error.

CNA Affected

[
  {
    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
    "vendor": "Linux",
    "product": "Linux",
    "versions": [
      {
        "status": "affected",
        "version": "e552bbaf5b98",
        "lessThan": "087de000e4f8",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "e552bbaf5b98",
        "lessThan": "796d3fad8c35",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "e552bbaf5b98",
        "lessThan": "8a7729cda2dd",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "e552bbaf5b98",
        "lessThan": "a979f56aa4b9",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "e552bbaf5b98",
        "lessThan": "eaef4650fa20",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "e552bbaf5b98",
        "lessThan": "08e23d05fa6d",
        "versionType": "git"
      }
    ],
    "programFiles": [
      "Documentation/ABI/testing/sysfs-class-devfreq",
      "drivers/devfreq/devfreq.c"
    ],
    "defaultStatus": "unaffected"
  },
  {
    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
    "vendor": "Linux",
    "product": "Linux",
    "versions": [
      {
        "status": "affected",
        "version": "3.8"
      },
      {
        "status": "unaffected",
        "version": "0",
        "lessThan": "3.8",
        "versionType": "custom"
      },
      {
        "status": "unaffected",
        "version": "5.10.216",
        "versionType": "custom",
        "lessThanOrEqual": "5.10.*"
      },
      {
        "status": "unaffected",
        "version": "5.15.149",
        "versionType": "custom",
        "lessThanOrEqual": "5.15.*"
      },
      {
        "status": "unaffected",
        "version": "6.1.76",
        "versionType": "custom",
        "lessThanOrEqual": "6.1.*"
      },
      {
        "status": "unaffected",
        "version": "6.6.15",
        "versionType": "custom",
        "lessThanOrEqual": "6.6.*"
      },
      {
        "status": "unaffected",
        "version": "6.7.3",
        "versionType": "custom",
        "lessThanOrEqual": "6.7.*"
      },
      {
        "status": "unaffected",
        "version": "6.8",
        "versionType": "original_commit_for_fix",
        "lessThanOrEqual": "*"
      }
    ],
    "programFiles": [
      "Documentation/ABI/testing/sysfs-class-devfreq",
      "drivers/devfreq/devfreq.c"
    ],
    "defaultStatus": "affected"
  }
]