CVE-2021-47122 net: caif: fix memory leak in caif_device_notify

2024-03-1520:14:28

Linux

github.com

cve-2021-47122

net

caif

memory leak

caif_device_notify

linux kernel

AI Score

6.8

Confidence

Low

SSVC

Exploitation

none

Automatable

Technical Impact

partial

JSON

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

net: caif: fix memory leak in caif_device_notify

In case of caif_enroll_dev() fail, allocated
link_support won’t be assigned to the corresponding
structure. So simply free allocated pointer in case
of error

CNA Affected

[
  {
    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
    "vendor": "Linux",
    "product": "Linux",
    "versions": [
      {
        "status": "affected",
        "version": "7c18d2205ea7",
        "lessThan": "b042e2b20395",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "7c18d2205ea7",
        "lessThan": "9348c1f10932",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "7c18d2205ea7",
        "lessThan": "4bca2034b41c",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "7c18d2205ea7",
        "lessThan": "3be863c11cab",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "7c18d2205ea7",
        "lessThan": "f52f4fd67264",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "7c18d2205ea7",
        "lessThan": "af2806345a37",
        "versionType": "git"
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      {
        "status": "affected",
        "version": "7c18d2205ea7",
        "lessThan": "6a0e317f6109",
        "versionType": "git"
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      {
        "status": "affected",
        "version": "7c18d2205ea7",
        "lessThan": "b53558a950a8",
        "versionType": "git"
      }
    ],
    "programFiles": [
      "net/caif/caif_dev.c"
    ],
    "defaultStatus": "unaffected"
  },
  {
    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
    "vendor": "Linux",
    "product": "Linux",
    "versions": [
      {
        "status": "affected",
        "version": "3.3"
      },
      {
        "status": "unaffected",
        "version": "0",
        "lessThan": "3.3",
        "versionType": "custom"
      },
      {
        "status": "unaffected",
        "version": "4.4.272",
        "versionType": "custom",
        "lessThanOrEqual": "4.4.*"
      },
      {
        "status": "unaffected",
        "version": "4.9.272",
        "versionType": "custom",
        "lessThanOrEqual": "4.9.*"
      },
      {
        "status": "unaffected",
        "version": "4.14.236",
        "versionType": "custom",
        "lessThanOrEqual": "4.14.*"
      },
      {
        "status": "unaffected",
        "version": "4.19.194",
        "versionType": "custom",
        "lessThanOrEqual": "4.19.*"
      },
      {
        "status": "unaffected",
        "version": "5.4.125",
        "versionType": "custom",
        "lessThanOrEqual": "5.4.*"
      },
      {
        "status": "unaffected",
        "version": "5.10.43",
        "versionType": "custom",
        "lessThanOrEqual": "5.10.*"
      },
      {
        "status": "unaffected",
        "version": "5.12.10",
        "versionType": "custom",
        "lessThanOrEqual": "5.12.*"
      },
      {
        "status": "unaffected",
        "version": "5.13",
        "versionType": "original_commit_for_fix",
        "lessThanOrEqual": "*"
      }
    ],
    "programFiles": [
      "net/caif/caif_dev.c"
    ],
    "defaultStatus": "affected"
  }
]