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RedhatCVE-2021-4023

HistoryMar 10, 2022 - 5:44 p.m.

CVE-2021-4023

2022-03-1017:44:50

CWE-200

redhat

web.nvd.nist.gov

112

cve-2021-4023

linux kernel

io-workqueue

system crash

io-uring

security flaw

CVSS2

4.9

Attack Vector

LOCAL

Attack Complexity

LOW

Authentication

NONE

Confidentiality Impact

NONE

Integrity Impact

NONE

Availability Impact

COMPLETE

AV:L/AC:L/Au:N/C:N/I:N/A:C

CVSS3

5.5

Attack Vector

LOCAL

Attack Complexity

LOW

Privileges Required

LOW

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

NONE

Integrity Impact

NONE

Availability Impact

HIGH

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

AI Score

5.4

Confidence

High

EPSS

Percentile

5.1%

JSON

A flaw was found in the io-workqueue implementation in the Linux kernel versions prior to 5.15-rc1. The kernel can panic when an improper cancellation operation triggers the submission of new io-uring operations during a shortage of free space. This flaw allows a local user with permissions to execute io-uring requests to possibly crash the system.

Affected configurations

Nvd

Vulners

Node

linuxlinux_kernelRange≤5.14

Node

fedoraprojectfedoraMatch35

VendorProductVersionCPE
linuxlinux_kernel*cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
fedoraprojectfedora35cpe:2.3:o:fedoraproject:fedora:35:*:*:*:*:*:*:*

Vendor	Product	Version	CPE
linux	linux_kernel	*	cpe:2.3:o:linux:linux_kernel::::::::
fedoraproject	fedora	35	cpe:2.3:o:fedoraproject:fedora:35:::::::*

CNA Affected

[
  {
    "product": "kernel",
    "vendor": "n/a",
    "versions": [
      {
        "status": "affected",
        "version": "kernel versions prior to 5.15-rc1"
      }
    ]
  }
]