CVE-2024-35848 eeprom: at24: fix memory corruption race condition

2024-05-1714:47:26

Linux

github.com

linux kernel

vulnerability

at24

memory corruption

nvmem device

race condition

AI Score

Confidence

Low

SSVC

Exploitation

none

Automatable

Technical Impact

partial

JSON

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

eeprom: at24: fix memory corruption race condition

If the eeprom is not accessible, an nvmem device will be registered, the
read will fail, and the device will be torn down. If another driver
accesses the nvmem device after the teardown, it will reference
invalid memory.

Move the failure point before registering the nvmem device.

CNA Affected

[
  {
    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
    "vendor": "Linux",
    "product": "Linux",
    "versions": [
      {
        "status": "affected",
        "version": "b20eb4c1f026",
        "lessThan": "c850f71fca09",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "b20eb4c1f026",
        "lessThan": "26d32bec4c6d",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "b20eb4c1f026",
        "lessThan": "c43e5028f5a3",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "b20eb4c1f026",
        "lessThan": "2af84c46b9b8",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "b20eb4c1f026",
        "lessThan": "6d8b56ec0c8f",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "b20eb4c1f026",
        "lessThan": "f42c97027fb7",
        "versionType": "git"
      }
    ],
    "programFiles": [
      "drivers/misc/eeprom/at24.c"
    ],
    "defaultStatus": "unaffected"
  },
  {
    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
    "vendor": "Linux",
    "product": "Linux",
    "versions": [
      {
        "status": "affected",
        "version": "5.3"
      },
      {
        "status": "unaffected",
        "version": "0",
        "lessThan": "5.3",
        "versionType": "custom"
      },
      {
        "status": "unaffected",
        "version": "5.10.217",
        "versionType": "custom",
        "lessThanOrEqual": "5.10.*"
      },
      {
        "status": "unaffected",
        "version": "5.15.159",
        "versionType": "custom",
        "lessThanOrEqual": "5.15.*"
      },
      {
        "status": "unaffected",
        "version": "6.1.91",
        "versionType": "custom",
        "lessThanOrEqual": "6.1.*"
      },
      {
        "status": "unaffected",
        "version": "6.6.31",
        "versionType": "custom",
        "lessThanOrEqual": "6.6.*"
      },
      {
        "status": "unaffected",
        "version": "6.8.9",
        "versionType": "custom",
        "lessThanOrEqual": "6.8.*"
      },
      {
        "status": "unaffected",
        "version": "6.9",
        "versionType": "original_commit_for_fix",
        "lessThanOrEqual": "*"
      }
    ],
    "programFiles": [
      "drivers/misc/eeprom/at24.c"
    ],
    "defaultStatus": "affected"
  }
]