HOMEVULNERABILITIESCVE-2019-19813
MEDIUM

CVE-2019-19813

CWE-416Published: December 17, 2019· Updated: Jun 17, 2026

5.5
CVSS v3.1

Official Description

In the Linux kernel 5.0.21, mounting a crafted btrfs filesystem image, performing some operations, and then making a syncfs system call can lead to a use-after-free in __mutex_lock in kernel/locking/mutex.c. This is related to mutex_can_spin_on_owner in kernel/locking/mutex.c, __btrfs_qgroup_free_meta in fs/btrfs/qgroup.c, and btrfs_insert_delayed_items in fs/btrfs/delayed-inode.c.

NVD Source

Technical Analysis

CVE-2019-19813 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 availability disruption (denial of service), with a CVSS base score of 5.5.

From a weakness classification perspective (CWE-416): Use-after-free vulnerabilities involve accessing memory after it has been freed, often enabling arbitrary code execution.

CVSS v3.1 Vector Breakdown

Exploitability
Attack VectorLocal
Attack ComplexityLow
Privileges Req.None
User InteractionRequired
ScopeUnchanged
Impact
ConfidentialityNone
IntegrityNone
AvailabilityHigh
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/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-2019-19813
ADVISORYhttps://lists.debian.org/debian-lts-announce/2020/09/msg00025.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-2019-19813
ADVISORYhttps://lists.debian.org/debian-lts-announce/2020/09/msg00025.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 (10)

→
https://github.com/bobfuzzer/CVE/tree/master/CVE-2019-19813Exploit · 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/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-2019-19813Exploit · 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/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-2019-19813
CVSS Score5.5 / 10
SeverityMEDIUM
WeaknessCWE-416
CISA KEVNo
Affected4 vendor(s)
PublishedDec 17, 2019

Related CVEs (CWE-416)

CVE-2012-5139
10.0
CVE-2011-0982
10.0
CVE-2010-2300
10.0
CVE-2012-5137
10.0
CVE-2010-3116
10.0
CVE-2012-5140
10.0

Recommended Actions

  • →Apply vendor patches immediately
  • →Monitor CVE-2019-19813 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.
← All Vulnerabilities·Search for CVE-2019-19813·NVD