HOMEVULNERABILITIESCVE-2019-19377
HIGH

CVE-2019-19377

CWE-416Published: November 29, 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, performing some operations, and unmounting can lead to a use-after-free in btrfs_queue_work in fs/btrfs/async-thread.c.

NVD Source

Technical Analysis

CVE-2019-19377 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-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
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

Linux1 product(s)
linux kernel
netapp4 product(s)
active iq unified managercloud backupsteelstore cloud integrated storagesolidfire baseboard management controller
Source: NVD CPE · 5 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-2019-19377
ADVISORYhttps://lists.debian.org/debian-lts-announce/2020/12/msg00015.html
ADVISORYhttps://security.netapp.com/advisory/ntap-20200103-0001/
ADVISORYhttps://usn.ubuntu.com/4367-1/
ADVISORYhttps://usn.ubuntu.com/4369-1/
ADVISORYhttps://usn.ubuntu.com/4414-1/
ADVISORYhttps://github.com/bobfuzzer/CVE/tree/master/CVE-2019-19377
ADVISORYhttps://lists.debian.org/debian-lts-announce/2020/12/msg00015.html
ADVISORYhttps://security.netapp.com/advisory/ntap-20200103-0001/
ADVISORYhttps://usn.ubuntu.com/4367-1/
ADVISORYhttps://usn.ubuntu.com/4369-1/
ADVISORYhttps://usn.ubuntu.com/4414-1/

All References (12)

→
https://github.com/bobfuzzer/CVE/tree/master/CVE-2019-19377Exploit · Third Party Advisory
→
https://lists.debian.org/debian-lts-announce/2020/12/msg00015.htmlMailing List · Third Party Advisory
→
https://security.netapp.com/advisory/ntap-20200103-0001/Third Party Advisory · VDB Entry
→
https://usn.ubuntu.com/4367-1/Third Party Advisory
→
https://usn.ubuntu.com/4369-1/Third Party Advisory
→
https://usn.ubuntu.com/4414-1/Third Party Advisory
→
https://github.com/bobfuzzer/CVE/tree/master/CVE-2019-19377Exploit · Third Party Advisory
→
https://lists.debian.org/debian-lts-announce/2020/12/msg00015.htmlMailing List · Third Party Advisory
→
https://security.netapp.com/advisory/ntap-20200103-0001/Third Party Advisory · VDB Entry
→
https://usn.ubuntu.com/4367-1/Third Party Advisory
→
https://usn.ubuntu.com/4369-1/Third Party Advisory
→
https://usn.ubuntu.com/4414-1/Third Party Advisory

Quick Facts

CVE IDCVE-2019-19377
CVSS Score7.8 / 10
SeverityHIGH
WeaknessCWE-416
CISA KEVNo
Affected2 vendor(s)
PublishedNov 29, 2019

Related CVEs (CWE-416)

CVE-2012-1974
10.0
CVE-2012-1972
10.0
CVE-2010-2302
10.0
CVE-2012-1973
10.0
CVE-2010-3116
10.0
CVE-2012-1975
10.0

Recommended Actions

  • →Apply vendor patches immediately
  • →Monitor CVE-2019-19377 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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