HOMEVULNERABILITIESCVE-2019-19816
HIGH

CVE-2019-19816

CWE-787Published: December 17, 2019· Updated: Jun 17, 2026

7.8
CVSS v3.1

Official 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.

NVD Source

Technical Analysis

CVE-2019-19816 requires local access, meaning attackers must already have a foothold on the target system.

Exploitation does not require any privileges, though user interaction (Required) is needed, which slightly reduces the risk of mass automated attacks.

A successful exploit results in complete confidentiality breach (data exposure), full integrity compromise (data manipulation), availability disruption (denial of service), with a CVSS base score of 7.8.

From a weakness classification perspective (CWE-787): Out-of-bounds write vulnerabilities can lead to data corruption, crashes, or arbitrary code execution.

CVSS v3.1 Vector Breakdown

Exploitability
Attack VectorLocal
Attack ComplexityLow
Privileges Req.None
User InteractionRequired
ScopeUnchanged
Impact
ConfidentialityHigh
IntegrityHigh
AvailabilityHigh
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

Affected Vendors & Products

Canonical1 product(s)
ubuntu linux
Debian1 product(s)
debian linux
Linux1 product(s)
linux kernel
netapp15 product(s)
active iq unified managerdata availability serviceshci management nodesolidfiresteelstore cloud integrated storageaff a700s firmwareaff a700sfas8300 firmwarefas8300fas8700 firmwarefas8700aff a400 firmware+3
Source: NVD CPE · 20 total CPE entries

Exploit & PoC Resources

NO KNOWN EXPLOITNo public exploit confirmed at this time
Exploit-DB
Offensive Security exploit database
GitHub PoC Search
Community PoC repositories
Rapid7 / Metasploit
Metasploit module search
PacketStorm
Security advisories & exploits
NVD Detail
Official NIST entry
MITRE CVE
CVE Program entry
External links open in a new tab. Always verify in a controlled environment before use.

Official Patches & Advisories

ADVISORYhttps://github.com/bobfuzzer/CVE/tree/master/CVE-2019-19816
ADVISORYhttps://lists.debian.org/debian-lts-announce/2020/09/msg00025.html
ADVISORYhttps://lists.debian.org/debian-lts-announce/2020/12/msg00015.html
ADVISORYhttps://lists.debian.org/debian-lts-announce/2021/03/msg00010.html
ADVISORYhttps://security.netapp.com/advisory/ntap-20200103-0001/
ADVISORYhttps://usn.ubuntu.com/4414-1/
ADVISORYhttps://github.com/bobfuzzer/CVE/tree/master/CVE-2019-19816
ADVISORYhttps://lists.debian.org/debian-lts-announce/2020/09/msg00025.html
ADVISORYhttps://lists.debian.org/debian-lts-announce/2020/12/msg00015.html
ADVISORYhttps://lists.debian.org/debian-lts-announce/2021/03/msg00010.html
ADVISORYhttps://security.netapp.com/advisory/ntap-20200103-0001/
ADVISORYhttps://usn.ubuntu.com/4414-1/

All References (12)

→
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

Quick Facts

CVE IDCVE-2019-19816
CVSS Score7.8 / 10
SeverityHIGH
WeaknessCWE-787
CISA KEVNo
Affected4 vendor(s)
PublishedDec 17, 2019

Related CVEs (CWE-787)

CVE-2004-1287
10.0
CVE-2018-10718
10.0
CVE-2022-30292
10.0
CVE-2015-0235
10.0
CVE-2004-0574
10.0
CVE-2009-2466
10.0

Recommended Actions

  • →Apply vendor patches immediately
  • →Monitor CVE-2019-19816 in threat intel feeds
  • →Review IDS/IPS signatures for exploitation attempts
Data sourced from NVD (NIST), CISA KEV, and EPSS (FIRST). Analysis generated by CTIWatch. CVE data is provided under the NVD usage policy.
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