CVE-2021-47171 net: usb: fix memory leak in smsc75xx_bind

2024-03-2509:16:22

Linux

www.cve.org

cve-2021-47171

net

usb

fix

memory leak

smsc75xx_bind

linux kernel

vulnerability

resolved

syzbot

reported

backtrace

AI Score

6.3

Confidence

High

EPSS

Percentile

5.1%

JSON

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

net: usb: fix memory leak in smsc75xx_bind

Syzbot reported memory leak in smsc75xx_bind().
The problem was is non-freed memory in case of
errors after memory allocation.

backtrace:
[<ffffffff84245b62>] kmalloc include/linux/slab.h:556 [inline]
[<ffffffff84245b62>] kzalloc include/linux/slab.h:686 [inline]
[<ffffffff84245b62>] smsc75xx_bind+0x7a/0x334 drivers/net/usb/smsc75xx.c:1460
[<ffffffff82b5b2e6>] usbnet_probe+0x3b6/0xc30 drivers/net/usb/usbnet.c:1728

CNA Affected

[
  {
    "product": "Linux",
    "vendor": "Linux",
    "defaultStatus": "unaffected",
    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
    "programFiles": [
      "drivers/net/usb/smsc75xx.c"
    ],
    "versions": [
      {
        "version": "d0cad871703b",
        "lessThan": "200dbfcad801",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "d0cad871703b",
        "lessThan": "22c840596af0",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "d0cad871703b",
        "lessThan": "9e6b8c1ff9d9",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "d0cad871703b",
        "lessThan": "9e6a3eccb287",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "d0cad871703b",
        "lessThan": "b95fb96e6339",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "d0cad871703b",
        "lessThan": "635ac38b3625",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "d0cad871703b",
        "lessThan": "70c886ac93f8",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "d0cad871703b",
        "lessThan": "46a8b29c6306",
        "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/net/usb/smsc75xx.c"
    ],
    "versions": [
      {
        "version": "2.6.34",
        "status": "affected"
      },
      {
        "version": "0",
        "lessThan": "2.6.34",
        "status": "unaffected",
        "versionType": "custom"
      },
      {
        "version": "4.4.271",
        "lessThanOrEqual": "4.4.*",
        "status": "unaffected",
        "versionType": "custom"
      },
      {
        "version": "4.9.271",
        "lessThanOrEqual": "4.9.*",
        "status": "unaffected",
        "versionType": "custom"
      },
      {
        "version": "4.14.235",
        "lessThanOrEqual": "4.14.*",
        "status": "unaffected",
        "versionType": "custom"
      },
      {
        "version": "4.19.193",
        "lessThanOrEqual": "4.19.*",
        "status": "unaffected",
        "versionType": "custom"
      },
      {
        "version": "5.4.124",
        "lessThanOrEqual": "5.4.*",
        "status": "unaffected",
        "versionType": "custom"
      },
      {
        "version": "5.10.42",
        "lessThanOrEqual": "5.10.*",
        "status": "unaffected",
        "versionType": "custom"
      },
      {
        "version": "5.12.9",
        "lessThanOrEqual": "5.12.*",
        "status": "unaffected",
        "versionType": "custom"
      },
      {
        "version": "5.13",
        "lessThanOrEqual": "*",
        "status": "unaffected",
        "versionType": "original_commit_for_fix"
      }
    ]
  }
]