CVE-2021-47474

2024-05-2209:15:09

416baaa9-dc9f-4396-8d5f-8c081fb06d67

web.nvd.nist.gov

linux kernel

comedi

vmk80xx

vulnerability

fix

bulk-buffer overflow

endpoint-sized buffers

malicious device

slab-allocated receive buffer

bulk transfers

6.9 Medium

AI Score

Confidence

Low

0.0004 Low

EPSS

Percentile

13.1%

JSON

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

comedi: vmk80xx: fix bulk-buffer overflow

The driver is using endpoint-sized buffers but must not assume that the
tx and rx buffers are of equal size or a malicious device could overflow
the slab-allocated receive buffer when doing bulk transfers.

Affected configurations

Vulners

Node

linuxlinux_kernelRange2.6.31–4.4.292

linuxlinux_kernelRange4.5.0–4.9.290

linuxlinux_kernelRange4.10.0–4.14.255

linuxlinux_kernelRange4.15.0–4.19.217

linuxlinux_kernelRange4.20.0–5.4.159

linuxlinux_kernelRange5.5.0–5.10.79

linuxlinux_kernelRange5.11.0–5.14.18

linuxlinux_kernelRange5.15.0–5.15.2

linuxlinux_kernelRange5.16.0≥

CNA Affected

[
  {
    "product": "Linux",
    "vendor": "Linux",
    "defaultStatus": "unaffected",
    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
    "programFiles": [
      "drivers/comedi/drivers/vmk80xx.c"
    ],
    "versions": [
      {
        "version": "985cafccbf9b",
        "lessThan": "e0e6a63fd97a",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "985cafccbf9b",
        "lessThan": "7cfb35db6077",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "985cafccbf9b",
        "lessThan": "0866dcaa828c",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "985cafccbf9b",
        "lessThan": "063f576c43d5",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "985cafccbf9b",
        "lessThan": "1ae4715121a5",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "985cafccbf9b",
        "lessThan": "b7fd7f3387f0",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "985cafccbf9b",
        "lessThan": "7b0e35618932",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "985cafccbf9b",
        "lessThan": "47b4636ebdbe",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "985cafccbf9b",
        "lessThan": "78cdfd62bd54",
        "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/comedi/drivers/vmk80xx.c"
    ],
    "versions": [
      {
        "version": "2.6.31",
        "status": "affected"
      },
      {
        "version": "0",
        "lessThan": "2.6.31",
        "status": "unaffected",
        "versionType": "custom"
      },
      {
        "version": "4.4.292",
        "lessThanOrEqual": "4.4.*",
        "status": "unaffected",
        "versionType": "custom"
      },
      {
        "version": "4.9.290",
        "lessThanOrEqual": "4.9.*",
        "status": "unaffected",
        "versionType": "custom"
      },
      {
        "version": "4.14.255",
        "lessThanOrEqual": "4.14.*",
        "status": "unaffected",
        "versionType": "custom"
      },
      {
        "version": "4.19.217",
        "lessThanOrEqual": "4.19.*",
        "status": "unaffected",
        "versionType": "custom"
      },
      {
        "version": "5.4.159",
        "lessThanOrEqual": "5.4.*",
        "status": "unaffected",
        "versionType": "custom"
      },
      {
        "version": "5.10.79",
        "lessThanOrEqual": "5.10.*",
        "status": "unaffected",
        "versionType": "custom"
      },
      {
        "version": "5.14.18",
        "lessThanOrEqual": "5.14.*",
        "status": "unaffected",
        "versionType": "custom"
      },
      {
        "version": "5.15.2",
        "lessThanOrEqual": "5.15.*",
        "status": "unaffected",
        "versionType": "custom"
      },
      {
        "version": "5.16",
        "lessThanOrEqual": "*",
        "status": "unaffected",
        "versionType": "original_commit_for_fix"
      }
    ]
  }
]