What is CVE-2020-27835?

CVE-2020-27835 is a Medium severity Linux kernel vulnerability with a CVSS score of 4.4 out of 10, classified as a Use After Free flaw (CWE-416). CVE-2020-27835 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

What is the CVSS score for CVE-2020-27835?

CVE-2020-27835 has a CVSS score of 4.4 out of 10, rated Medium severity. The vector string is CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H.

Is there a patch available for CVE-2020-27835?

No patch is currently available for CVE-2020-27835. Monitor the NIST NVD and your Linux distribution's security advisories for updates.

Is CVE-2020-27835 actively exploited?

CVE-2020-27835 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-2020-27835

Medium

A use after free in the Linux kernel infiniband hfi1 driver in versions prior to 5.10-rc6 was found in the way user calls Ioctl after open dev file and fork. A local user could use this flaw to crash the system.

Package Linux Kernel

Published 2021-01-07

Last modified 2024-11-21

CVSS version 3.1

Patch available

Awaiting data

CVSS 3.1 score

4.4

out of 10

Medium

Attack Vector

Local

Attack Complexity

Low

Privileges Required

High

User Interaction

None

Scope

Unchanged

Confidentiality

Low

Integrity

None

Availability

High

Vector string

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

Weakness type

CWE-416

CVE-2020-27835 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

The following references provide additional information about CVE-2020-27835 including vendor advisories, patch commits, exploit details, and third-party analysis. Links are sourced from the NIST NVD database.

Kernel patch commit
https://bugzilla.redhat.com/show_bug.cgi?id=1901709
Patch

Details

CVE ID CVE-2020-27835

Severity Medium

CVSS score 4.4 / 10

CVSS version 3.1

Published 2021-01-07

Modified 2024-11-21

KEV No

Patch Awaiting data

Package linux

Frequently asked questions

What is CVE-2020-27835?

CVE-2020-27835 is a Medium severity Linux kernel vulnerability with a CVSS score of 4.4 out of 10 , classified as an Use After Free flaw (CWE-416) . CVE-2020-27835 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.
What is the CVSS score for CVE-2020-27835?

CVE-2020-27835 has a CVSS score of 4.4 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:N/I:N/A:H.
Is there a patch available for CVE-2020-27835?

No patch is currently available for CVE-2020-27835. Monitor the NIST NVD and your Linux distribution's security advisories for updates.
Is CVE-2020-27835 actively exploited?

No — CVE-2020-27835 has not been confirmed as actively exploited. It is not listed in the CISA Known Exploited Vulnerabilities (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. View CWE-416 on MITRE CWE →