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[email protected]CVE-2022-4744

HistoryMar 30, 2023 - 9:15 p.m.

CVE-2022-4744

2023-03-3021:15:06

CWE-460

CWE-415

[email protected]

web.nvd.nist.gov

linux

kernel

tun/tap

device driver

double-free

flaw

local user

privilege escalation

cve-2022-4744

nvd

7.8 High

CVSS3

Attack Vector

LOCAL

Attack Complexity

LOW

Privileges Required

LOW

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

HIGH

Integrity Impact

HIGH

Availability Impact

HIGH

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

7.3 High

AI Score

Confidence

High

0.0004 Low

EPSS

Percentile

5.1%

JSON

A double-free flaw was found in the Linux kernel’s TUN/TAP device driver functionality in how a user registers the device when the register_netdevice function fails (NETDEV_REGISTER notifier). This flaw allows a local user to crash or potentially escalate their privileges on the system.

Affected configurations

Vulners

NVD

Node

linuxlinux_kernelRange≤5.16

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

[
  {
    "vendor": "n/a",
    "product": "Kernel",
    "versions": [
      {
        "version": "Linux kernel 5.16-rc7",
        "status": "affected"
      }
    ]
  }
]