What is CVE-2019-19768?

CVE-2019-19768 is a High severity Linux kernel vulnerability with a CVSS score of 7.5 out of 10, classified as a Use After Free flaw (CWE-416). CVE-2019-19768 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

What is the CVSS score for CVE-2019-19768?

CVE-2019-19768 has a CVSS score of 7.5 out of 10, rated High severity. The vector string is CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.

Is there a patch available for CVE-2019-19768?

No patch is currently available for CVE-2019-19768. Monitor the NIST NVD and your Linux distribution's security advisories for updates.

Is CVE-2019-19768 actively exploited?

CVE-2019-19768 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-2019-19768

High

In the Linux kernel 5.4.0-rc2, there is a use-after-free (read) in the __blk_add_trace function in kernel/trace/blktrace.c (which is used to fill out a blk_io_trace structure and place it in a per-cpu sub-buffer).

Package Linux Kernel

Published 2019-12-12

Last modified 2024-11-21

CVSS version 3.1

Patch available

Awaiting data

CVSS 3.1 score

7.5

out of 10

High

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

None

Scope

Unchanged

Confidentiality

Low

Integrity

None

Availability

High

Vector string

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

Weakness type

CWE-416

CVE-2019-19768 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-2019-19768 including vendor advisories, patch commits, exploit details, and third-party analysis. Links are sourced from the NIST NVD database.

Lists
http://lists.opensuse.org/opensuse-security-announce/2020-03/msg00039.html
Kernel.org
https://bugzilla.kernel.org/show_bug.cgi?id=205711

Issue Tracking Vendor Advisory
Debian Security
https://lists.debian.org/debian-lts-announce/2020/06/msg00011.html
Debian Security
https://lists.debian.org/debian-lts-announce/2020/06/msg00012.html
Debian Security
https://lists.debian.org/debian-lts-announce/2020/06/msg00013.html
Security
https://security.netapp.com/advisory/ntap-20200103-0001/
Ubuntu Security
https://usn.ubuntu.com/4342-1/
Ubuntu Security
https://usn.ubuntu.com/4344-1/
Ubuntu Security
https://usn.ubuntu.com/4345-1/
Ubuntu Security
https://usn.ubuntu.com/4346-1/
Debian Security
https://www.debian.org/security/2020/dsa-4698

Details

CVE ID CVE-2019-19768

Severity High

CVSS score 7.5 / 10

CVSS version 3.1

Published 2019-12-12

Modified 2024-11-21

KEV No

Patch Awaiting data

Package linux

Frequently asked questions

What is CVE-2019-19768?

CVE-2019-19768 is a High severity Linux kernel vulnerability with a CVSS score of 7.5 out of 10 , classified as an Use After Free flaw (CWE-416) . CVE-2019-19768 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.
What is the CVSS score for CVE-2019-19768?

CVE-2019-19768 has a CVSS score of 7.5 out of 10, rated High severity (CVSS 3.1). The vector string is CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.
Is there a patch available for CVE-2019-19768?

No patch is currently available for CVE-2019-19768. Monitor the NIST NVD and your Linux distribution's security advisories for updates.
Is CVE-2019-19768 actively exploited?

No — CVE-2019-19768 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 →