What is CVE-2020-36557?

CVE-2020-36557 is a Medium severity Linux kernel vulnerability with a CVSS score of 5.1 out of 10, classified as a Race Condition flaw (CWE-362). CVE-2020-36557 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

What is the CVSS score for CVE-2020-36557?

CVE-2020-36557 has a CVSS score of 5.1 out of 10, rated Medium severity. The vector string is CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H.

Is there a patch available for CVE-2020-36557?

Monitor the NIST NVD and your Linux distribution's security advisories for CVE-2020-36557 patch availability.

Is CVE-2020-36557 actively exploited?

CVE-2020-36557 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

What is Race Condition (CWE-362)?

The product contains a code sequence that can run concurrently with other code, creating unexpected states. See MITRE CWE for full details: https://cwe.mitre.org/data/definitions/362.html

CVE-2020-36557

Medium

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.

Package Linux Kernel

Published 2022-07-21

Last modified 2024-11-21

CVSS version 3.1

Patch available

Awaiting data

CVSS 3.1 score

5.1

out of 10

Medium

Attack Vector

Local

Attack Complexity

High

Privileges Required

None

User Interaction

None

Scope

Unchanged

Confidentiality

High

Integrity

None

Availability

High

Vector string

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

Weakness type

CWE-362

CVE-2020-36557 is a Race Condition vulnerability

What is Race Condition?

The product contains a code sequence that can run concurrently with other code, creating unexpected states. Learn more on MITRE CWE

References

2 total

Kernel.org
https://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.6.2

Patch Release Notes Vendor Advisory
Kernel Git
https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=ca4463bf8438b403596edd0ec961ca0d4fbe0220

Mailing List Patch Vendor Advisory

Details

CVE ID CVE-2020-36557

Severity Medium

CVSS score 5.1 / 10

CVSS version 3.1

Published 2022-07-21

Modified 2024-11-21

KEV No

Patch Awaiting data

Package linux

Frequently asked questions

What is CVE-2020-36557?

CVE-2020-36557 is a Medium severity Linux kernel vulnerability with a CVSS score of 5.1 out of 10 , classified as a Race Condition flaw (CWE-362) . CVE-2020-36557 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.
What is the CVSS score for CVE-2020-36557?

CVE-2020-36557 has a CVSS score of 5.1 out of 10, rated Medium severity (CVSS 3.1). The vector string is CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H.
Is there a patch available for CVE-2020-36557?

Monitor the NIST NVD and your Linux distribution's security advisories for CVE-2020-36557 patch availability.
Is CVE-2020-36557 actively exploited?

No. CVE-2020-36557 has not been confirmed as actively exploited. It is not listed in the CISA Known Exploited Vulnerabilities (KEV) catalog.