What is CVE-2020-15436?

CVE-2020-15436 is a Medium severity Linux kernel vulnerability with a CVSS score of 6.7 out of 10, classified as a Use After Free flaw (CWE-416). CVE-2020-15436 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

What is the CVSS score for CVE-2020-15436?

CVE-2020-15436 has a CVSS score of 6.7 out of 10, rated Medium severity. The vector string is CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H.

Is there a patch available for CVE-2020-15436?

Monitor the NIST NVD and your Linux distribution's security advisories for CVE-2020-15436 patch availability.

Is CVE-2020-15436 actively exploited?

CVE-2020-15436 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

What is Use After Free (CWE-416)?

The product references memory after it has been freed, which may cause it to crash, use unexpected values, or execute code. See MITRE CWE for full details: https://cwe.mitre.org/data/definitions/416.html

CVE-2020-15436

Medium

Use-after-free vulnerability in fs/block_dev.c in the Linux kernel before 5.8 allows local users to gain privileges or cause a denial of service by leveraging improper access to a certain error field.

Package Linux Kernel

Published 2020-11-23

Last modified 2024-11-21

CVSS version 3.1

Patch available

Awaiting data

CVSS 3.1 score

6.7

out of 10

Medium

Attack Vector

Local

Attack Complexity

Low

Privileges Required

High

User Interaction

None

Scope

Unchanged

Confidentiality

High

Integrity

High

Availability

High

Vector string

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

Weakness type

CWE-416

CVE-2020-15436 is a Use After Free vulnerability

What is Use After Free?

The product references memory after it has been freed, which may cause it to crash, use unexpected values, or execute code. Learn more on MITRE CWE

References

2 total

Lkml
https://lkml.org/lkml/2020/6/7/379

Exploit Patch Vendor Advisory
Security
https://security.netapp.com/advisory/ntap-20201218-0002/

Third Party Advisory

Details

CVE ID CVE-2020-15436

Severity Medium

CVSS score 6.7 / 10

CVSS version 3.1

Published 2020-11-23

Modified 2024-11-21

KEV No

Patch Awaiting data

Package linux

Frequently asked questions

What is CVE-2020-15436?

CVE-2020-15436 is a Medium severity Linux kernel vulnerability with a CVSS score of 6.7 out of 10 , classified as an Use After Free flaw (CWE-416) . CVE-2020-15436 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.
What is the CVSS score for CVE-2020-15436?

CVE-2020-15436 has a CVSS score of 6.7 out of 10, rated Medium severity (CVSS 3.1). The vector string is CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H.
Is there a patch available for CVE-2020-15436?

Monitor the NIST NVD and your Linux distribution's security advisories for CVE-2020-15436 patch availability.
Is CVE-2020-15436 actively exploited?

No. CVE-2020-15436 has not been confirmed as actively exploited. It is not listed in the CISA Known Exploited Vulnerabilities (KEV) catalog.