CVE-2019-19816

Name: CVE-2019-19816
Creator: NVD / NIST
Published: 2019-12-17T06:15:12.907+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

HIGHCVSS 7.8/10EPSS 3.29%

Last modified Jun 17, 2026

CVE-2019-19816 is a high-severity vulnerability rated 7.8/10 on the CVSS scale. In the Linux kernel 5.0.21, mounting a crafted btrfs filesystem image and performing some operations can cause slab-out-of-bounds write access in __btrfs_map_block in fs/btrfs/volumes.c, because a value of 1 for the number of data stripes is mishandled.. EPSS estimates a 3.29% chance of exploitation in the next 30 days.

Description

In the Linux kernel 5.0.21, mounting a crafted btrfs filesystem image and performing some operations can cause slab-out-of-bounds write access in __btrfs_map_block in fs/btrfs/volumes.c, because a value of 1 for the number of data stripes is mishandled.

Metrics

CVSS 3.1

7.8/10

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

EPSS Probability

3.29%

86.9th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-787

Affected Software

Vendor	Product	Versions
Linux	Linux Kernel	>= 2.6.12, < 4.4.247
Linux	Linux Kernel	>= 4.5, < 4.9.247
Linux	Linux Kernel	>= 4.10, < 4.14.210
Linux	Linux Kernel	>= 4.15, < 4.19.137
Linux	Linux Kernel	>= 4.20, < 5.2
Canonical	Ubuntu Linux	14.04
Canonical	Ubuntu Linux	16.04
Canonical	Ubuntu Linux	18.04
Debian	Debian Linux	9.0
Netapp	Active Iq Unified Manager	>= 9.5
Netapp	Data Availability Services	All versions
Netapp	Hci Management Node	All versions
Netapp	Solidfire	All versions
Netapp	Steelstore Cloud Integrated Storage	All versions
Netapp	Aff A700s Firmware	All versions
Netapp	Fas8300 Firmware	All versions
Netapp	Fas8700 Firmware	All versions
Netapp	Aff A400 Firmware	All versions
Netapp	H610s Firmware	All versions

References

https://github.com/bobfuzzer/CVE/tree/master/CVE-2019-19816Exploit, Third Party Advisory
https://lists.debian.org/debian-lts-announce/2020/09/msg00025.htmlMailing List, Third Party Advisory
https://lists.debian.org/debian-lts-announce/2020/12/msg00015.htmlMailing List, Third Party Advisory
https://lists.debian.org/debian-lts-announce/2021/03/msg00010.htmlMailing List, Third Party Advisory
https://security.netapp.com/advisory/ntap-20200103-0001/Third Party Advisory
https://usn.ubuntu.com/4414-1/Third Party Advisory
https://github.com/bobfuzzer/CVE/tree/master/CVE-2019-19816Exploit, Third Party Advisory
https://lists.debian.org/debian-lts-announce/2020/09/msg00025.htmlMailing List, Third Party Advisory
https://lists.debian.org/debian-lts-announce/2020/12/msg00015.htmlMailing List, Third Party Advisory
https://lists.debian.org/debian-lts-announce/2021/03/msg00010.htmlMailing List, Third Party Advisory
https://security.netapp.com/advisory/ntap-20200103-0001/Third Party Advisory
https://usn.ubuntu.com/4414-1/Third Party Advisory

Timeline

Published: Dec 17, 2019
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2019-19816?

How severe is CVE-2019-19816?

CVE-2019-19816 has a CVSS score of 7.8/10 (HIGH severity). The EPSS model estimates a 3.29% probability of exploitation in the next 30 days.

How do I fix CVE-2019-19816?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2019-19816?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST