CVE-2021-4028

2022-08-2416:15:09

CWE-416

[email protected]

web.nvd.nist.gov

204

cve-2021-4028

linux kernel

rdma

security flaw

privilege escalation

nvd

vulnerability

CVSS3

7.8

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

AI Score

7.8

Confidence

High

EPSS

Percentile

5.1%

JSON

A flaw in the Linux kernel’s implementation of RDMA communications manager listener code allowed an attacker with local access to setup a socket to listen on a high port allowing for a list element to be used after free. Given the ability to execute code, a local attacker could leverage this use-after-free to crash the system or possibly escalate privileges on the system.

Affected configurations

Vulners

NVD

Node

linux_kernelkernelRange≤5.15

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": "Fixed in kernel 5.15-rc1",
        "status": "affected"
      }
    ]
  }
]