CVE-2024-40994 ptp: fix integer overflow in max_vclocks_store

2024-07-1212:37:37

Linux

www.cve.org

linux

kernel

integer overflow

fixed

max_vclocks_store

vulnerability

EPSS

Percentile

5.0%

JSON

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

ptp: fix integer overflow in max_vclocks_store

On 32bit systems, the “4 * max” multiply can overflow. Use kcalloc()
to do the allocation to prevent this.

CNA Affected

[
  {
    "product": "Linux",
    "vendor": "Linux",
    "defaultStatus": "unaffected",
    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
    "programFiles": [
      "drivers/ptp/ptp_sysfs.c"
    ],
    "versions": [
      {
        "version": "44c494c8e30e",
        "lessThan": "4b03da87d0b7",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "44c494c8e30e",
        "lessThan": "d50d62d5e6ee",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "44c494c8e30e",
        "lessThan": "666e934d749e",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "44c494c8e30e",
        "lessThan": "e1fccfb4638e",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "44c494c8e30e",
        "lessThan": "81d23d2a2401",
        "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/ptp/ptp_sysfs.c"
    ],
    "versions": [
      {
        "version": "5.14",
        "status": "affected"
      },
      {
        "version": "0",
        "lessThan": "5.14",
        "status": "unaffected",
        "versionType": "custom"
      },
      {
        "version": "5.15.162",
        "lessThanOrEqual": "5.15.*",
        "status": "unaffected",
        "versionType": "custom"
      },
      {
        "version": "6.1.96",
        "lessThanOrEqual": "6.1.*",
        "status": "unaffected",
        "versionType": "custom"
      },
      {
        "version": "6.6.36",
        "lessThanOrEqual": "6.6.*",
        "status": "unaffected",
        "versionType": "custom"
      },
      {
        "version": "6.9.7",
        "lessThanOrEqual": "6.9.*",
        "status": "unaffected",
        "versionType": "custom"
      },
      {
        "version": "6.10",
        "lessThanOrEqual": "*",
        "status": "unaffected",
        "versionType": "original_commit_for_fix"
      }
    ]
  }
]