CVE-2020-36387

Severity CVSS v4.0:

Pending analysis

Type:

CWE-416 Use After Free

Publication date:

07/06/2021

Last modified:

24/02/2023

Description

An issue was discovered in the Linux kernel before 5.8.2. fs/io_uring.c has a use-after-free related to io_async_task_func and ctx reference holding, aka CID-6d816e088c35.

Impact

Vector 3.x

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H CVSS v3.1 Severity and Metrics:

Base Score: 7.80 HIGH
Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Attack Vector (AV): Local
Attack Complexity (AC): Low
Privileges Required (PR): Low
User Interaction (UI): None
Scope (S): Unchanged
Confidentiality (C): High
Integrity (I): High
Availability (A): High

Base Score 3.x

7.80

Severity 3.x

HIGH

Vector 2.0

AV:L/AC:L/Au:N/C:C/I:C/A:C CVSS v2.0 Severity and Metrics:

Base Score: 7.20 HIGH
Vector: AV:L/AC:L/Au:N/C:C/I:C/A:C

Attack Vector (AV): Local
Attack Complexity (AC): Low
Authentication (Au): None
Confidentiality (C): Complete
Integrity (I): Complete
Availability (A): Complete

Base Score 2.0

7.20

Severity 2.0

HIGH

Vulnerable products and versions

CPE	From	Up to
cpe:2.3:o:linux:linux_kernel::::::::	5.7 (including)	5.7.16 (excluding)
cpe:2.3:o:linux:linux_kernel::::::::	5.8 (including)	5.8.2 (excluding)
cpe:2.3:o:netapp:h300s_firmware:-:::::::*
cpe:2.3:h:netapp:h300s:-:::::::*
cpe:2.3:o:netapp:h500s_firmware:-:::::::*
cpe:2.3:h:netapp:h500s:-:::::::*
cpe:2.3:o:netapp:h700s_firmware:-:::::::*
cpe:2.3:h:netapp:h700s:-:::::::*
cpe:2.3:o:netapp:h300e_firmware:-:::::::*
cpe:2.3:h:netapp:h300e:-:::::::*
cpe:2.3:o:netapp:h500e_firmware:-:::::::*
cpe:2.3:h:netapp:h500e:-:::::::*
cpe:2.3:o:netapp:h700e_firmware:-:::::::*
cpe:2.3:h:netapp:h700e:-:::::::*
cpe:2.3:o:netapp:h410s_firmware:-:::::::*

To consult the complete list of CPE names with products and versions, see this page

CPE	From	Up to
cpe:2.3:o:linux:linux_kernel::::::::	5.7 (including)	5.7.16 (excluding)
cpe:2.3:o:linux:linux_kernel::::::::	5.8 (including)	5.8.2 (excluding)
cpe:2.3:o:netapp:h300s_firmware:-:::::::*
cpe:2.3:h:netapp:h300s:-:::::::*
cpe:2.3:o:netapp:h500s_firmware:-:::::::*
cpe:2.3:h:netapp:h500s:-:::::::*
cpe:2.3:o:netapp:h700s_firmware:-:::::::*
cpe:2.3:h:netapp:h700s:-:::::::*
cpe:2.3:o:netapp:h300e_firmware:-:::::::*
cpe:2.3:h:netapp:h300e:-:::::::*
cpe:2.3:o:netapp:h500e_firmware:-:::::::*
cpe:2.3:h:netapp:h500e:-:::::::*
cpe:2.3:o:netapp:h700e_firmware:-:::::::*
cpe:2.3:h:netapp:h700e:-:::::::*
cpe:2.3:o:netapp:h410s_firmware:-:::::::*

CVE-2020-36387

Description

Impact

Vulnerable products and versions

References to Advisories, Solutions, and Tools