CVE-2020-36557

A race condition in the Linux kernel before 5.6.2 between the VT_DISALLOCATE ioctl and closing/opening of ttys could lead to a use-after-free.

CVSS v3 5.1 MEDIUM

5.1^/10

CVSS v3 : MEDIUM

V3 Legend

Vector :

Exploitability : 1.4 / Impact : 3.6

Attack Vector LOCAL

Attack Complexity HIGH

Privileges Required NONE

User Interaction NONE

Confidentiality Impact NONE

Integrity Impact NONE

Availability Impact HIGH

Scope UNCHANGED

References

Link	Resource
https://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.6.2	Patch Release Notes Vendor Advisory
https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=ca4463bf8438b403596edd0ec961ca0d4fbe0220	Mailing List Patch Vendor Advisory
https://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.6.2	Patch Release Notes Vendor Advisory
https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=ca4463bf8438b403596edd0ec961ca0d4fbe0220	Mailing List Patch Vendor Advisory

Configurations

Configuration 1 (hide)

cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*

History

21 Nov 2024, 05:29

Type	Values Removed	Values Added
References	~~() https://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.6.2 - Patch, Release Notes, Vendor Advisory~~	() https://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.6.2 - Patch, Release Notes, Vendor Advisory
References	~~() https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=ca4463bf8438b403596edd0ec961ca0d4fbe0220 - Mailing List, Patch, Vendor Advisory~~	() https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=ca4463bf8438b403596edd0ec961ca0d4fbe0220 - Mailing List, Patch, Vendor Advisory

27 Jul 2022, 19:24

Type	Values Removed	Values Added
References	~~(MISC) https://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.6.2 -~~	(MISC) https://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.6.2 - Patch, Release Notes, Vendor Advisory
References	~~(MISC) https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=ca4463bf8438b403596edd0ec961ca0d4fbe0220 -~~	(MISC) https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=ca4463bf8438b403596edd0ec961ca0d4fbe0220 - Mailing List, Patch, Vendor Advisory
CWE		CWE-416 CWE-362
CPE		cpe:2.3:o:linux:linux_kernel::::::::
CVSS	v2 : ~~unknown~~ v3 : ~~unknown~~	v2 : unknown v3 : 5.1

21 Jul 2022, 04:15

Type	Values Removed	Values Added
New CVE

Information

Published : 2022-07-21 04:15

Updated : 2024-11-21 05:29

NVD link : CVE-2020-36557

Mitre link : CVE-2020-36557

CVE.ORG link : CVE-2020-36557

JSON object : View

Products Affected

linux

linux_kernel

CWE

CWE-362

Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition')

CWE-416

Use After Free

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5.1 /10