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[email protected]CVE-2020-27820

HistoryNov 03, 2021 - 12:15 a.m.

CVE-2020-27820

2021-11-0300:15:07

CWE-416

[email protected]

web.nvd.nist.gov

221

cve-2020-27820

linux kernel

vulnerability

use-after-frees

nouveau

postclose() handler

4.7 Medium

CVSS2

Attack Vector

LOCAL

Attack Complexity

MEDIUM

Authentication

NONE

Confidentiality Impact

NONE

Integrity Impact

NONE

Availability Impact

COMPLETE

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

4.7 Medium

CVSS3

Attack Vector

LOCAL

Attack Complexity

HIGH

Privileges Required

LOW

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

NONE

Integrity Impact

NONE

Availability Impact

HIGH

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

6.1 Medium

AI Score

Confidence

Low

0.0004 Low

EPSS

Percentile

16.1%

JSON

A vulnerability was found in Linux kernel, where a use-after-frees in nouveau’s postclose() handler could happen if removing device (that is not common to remove video card physically without power-off, but same happens if “unbind” the driver).

Affected configurations

Vulners

NVD

Node

linuxlinux_kernel

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": "kernel",
    "vendor": "n/a",
    "versions": [
      {
        "status": "affected",
        "version": "to be fixed in RHEL-9 release"
      }
    ]
  }
]