CVE-2021-47403

2024-05-2115:15:25

CWE-200

Linux

web.nvd.nist.gov

linux kernel

ipack

vulnerability

CVSS3

7.1

Attack Vector

LOCAL

Attack Complexity

LOW

Privileges Required

LOW

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

HIGH

Integrity Impact

NONE

Availability Impact

HIGH

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H

AI Score

6.7

Confidence

Low

EPSS

Percentile

13.0%

JSON

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

ipack: ipoctal: fix module reference leak

A reference to the carrier module was taken on every open but was only
released once when the final reference to the tty struct was dropped.

Fix this by taking the module reference and initialising the tty driver
data when installing the tty.

Affected configurations

Vulners

Node

linuxlinux_kernelRange3.18–4.4.286

linuxlinux_kernelRange4.5.0–4.9.285

linuxlinux_kernelRange4.10.0–4.14.249

linuxlinux_kernelRange4.15.0–4.19.209

linuxlinux_kernelRange4.20.0–5.4.151

linuxlinux_kernelRange5.5.0–5.10.71

linuxlinux_kernelRange5.11.0–5.14.10

linuxlinux_kernelRange5.15.0≥

VendorProductVersionCPE
linuxlinux_kernel*cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*

Vendor	Product	Version	CPE
linux	linux_kernel	*	cpe:2.3:o:linux:linux_kernel::::::::

CNA Affected

[
  {
    "product": "Linux",
    "vendor": "Linux",
    "defaultStatus": "unaffected",
    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
    "programFiles": [
      "drivers/ipack/devices/ipoctal.c"
    ],
    "versions": [
      {
        "version": "82a82340bab6",
        "lessThan": "31398849b84e",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "82a82340bab6",
        "lessThan": "c0adb5a947de",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "82a82340bab6",
        "lessThan": "dde4c1429b97",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "82a82340bab6",
        "lessThan": "9c5b77a7ffc9",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "82a82340bab6",
        "lessThan": "3253c87e1e5b",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "82a82340bab6",
        "lessThan": "7cea84867847",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "82a82340bab6",
        "lessThan": "811178f296b1",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "82a82340bab6",
        "lessThan": "bb8a4fcb2136",
        "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/ipack/devices/ipoctal.c"
    ],
    "versions": [
      {
        "version": "3.18",
        "status": "affected"
      },
      {
        "version": "0",
        "lessThan": "3.18",
        "status": "unaffected",
        "versionType": "custom"
      },
      {
        "version": "4.4.286",
        "lessThanOrEqual": "4.4.*",
        "status": "unaffected",
        "versionType": "custom"
      },
      {
        "version": "4.9.285",
        "lessThanOrEqual": "4.9.*",
        "status": "unaffected",
        "versionType": "custom"
      },
      {
        "version": "4.14.249",
        "lessThanOrEqual": "4.14.*",
        "status": "unaffected",
        "versionType": "custom"
      },
      {
        "version": "4.19.209",
        "lessThanOrEqual": "4.19.*",
        "status": "unaffected",
        "versionType": "custom"
      },
      {
        "version": "5.4.151",
        "lessThanOrEqual": "5.4.*",
        "status": "unaffected",
        "versionType": "custom"
      },
      {
        "version": "5.10.71",
        "lessThanOrEqual": "5.10.*",
        "status": "unaffected",
        "versionType": "custom"
      },
      {
        "version": "5.14.10",
        "lessThanOrEqual": "5.14.*",
        "status": "unaffected",
        "versionType": "custom"
      },
      {
        "version": "5.15",
        "lessThanOrEqual": "*",
        "status": "unaffected",
        "versionType": "original_commit_for_fix"
      }
    ]
  }
]