What is CVE-2019-20934?

CVE-2019-20934 is a Medium severity Linux kernel vulnerability with a CVSS score of 5.3 out of 10, classified as a Use After Free flaw (CWE-416). CVE-2019-20934 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

What is the CVSS score for CVE-2019-20934?

CVE-2019-20934 has a CVSS score of 5.3 out of 10, rated Medium severity. The vector string is CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:L/I:N/A:H.

Is there a patch available for CVE-2019-20934?

No patch is currently available for CVE-2019-20934. Monitor the NIST NVD and your Linux distribution's security advisories for updates.

Is CVE-2019-20934 actively exploited?

CVE-2019-20934 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-2019-20934

Medium

An issue was discovered in the Linux kernel before 5.2.6. On NUMA systems, the Linux fair scheduler has a use-after-free in show_numa_stats() because NUMA fault statistics are inappropriately freed, aka CID-16d51a590a8c.

Package Linux Kernel

Published 2020-11-28

Last modified 2024-11-21

CVSS version 3.1

Patch available

Awaiting data

CVSS 3.1 score

5.3

out of 10

Medium

Attack Vector

Local

Attack Complexity

High

Privileges Required

Low

User Interaction

None

Scope

Unchanged

Confidentiality

High

Integrity

None

Availability

High

Vector string

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

Weakness type

CWE-416

CVE-2019-20934 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-2019-20934 including vendor advisories, patch commits, exploit details, and third-party analysis. Links are sourced from the NIST NVD database.

Bugs
https://bugs.chromium.org/p/project-zero/issues/detail?id=1913

Issue Tracking Vendor Advisory
Kernel.org
https://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.2.6

Vendor Advisory
Kernel patch commit
https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=16d51a590a8ce3befb1308e0e7ab77f3b661af33
Patch

Details

CVE ID CVE-2019-20934

Severity Medium

CVSS score 5.3 / 10

CVSS version 3.1

Published 2020-11-28

Modified 2024-11-21

KEV No

Patch Awaiting data

Package linux

Frequently asked questions

What is CVE-2019-20934?

CVE-2019-20934 is a Medium severity Linux kernel vulnerability with a CVSS score of 5.3 out of 10 , classified as an Use After Free flaw (CWE-416) . CVE-2019-20934 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.
What is the CVSS score for CVE-2019-20934?

CVE-2019-20934 has a CVSS score of 5.3 out of 10, rated Medium severity (CVSS 3.1). The vector string is CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:L/I:N/A:H.
Is there a patch available for CVE-2019-20934?

No patch is currently available for CVE-2019-20934. Monitor the NIST NVD and your Linux distribution's security advisories for updates.
Is CVE-2019-20934 actively exploited?

No — CVE-2019-20934 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 →