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CVE-2019-19318

Affected software5 products, listed below
Severity4.4 Medium CVSS 3.1 2 scores
WeaknessUse after free (CWE-416)
Published28 Nov 2019
Updated17 Jun 2026

Description

In the Linux kernel 5.3.11, mounting a crafted btrfs image twice can cause an rwsem_down_write_slowpath use-after-free because (in rwsem_can_spin_on_owner in kernel/locking/rwsem.c) rwsem_owner_flags returns an already freed pointer,

Exploitation status

No public exploit

No exploit has been reported in the sources we check. Published 6 years ago.

  • CISA KEV not listed
  • VulnCheck KEV not listed
  • CISA Vulnrichment no assessment published
  • Indexed PoC none indexed
  • EPSS 0.65% chance in 30 days

Waratek protection

Outside Waratek scope

A Java vulnerability, but not one Waratek protects. It affects only Java on a user's desktop (applets, Web Start, JavaFX, the installer), sits in a product the Waratek agent can't be installed into, or is in a package we don't expect in business applications. The decision below says which.

  • Protection none
  • Action not pursued none
  • Review human Researcher
  • Record active
Decided by Manual classification of this CVE in the legacy dataset
Finding A manual classification set this CVE's status to Outside Waratek scope, but the CVE names a tracked product.

CVSS

4.4 MEDIUM v3.1 CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H 2 metrics

We show the highest score from the newest CVSS version. Scores from different versions can't be compared, and the first score listed is sometimes a 0.0 placeholder.

VersionScoreBandVectorAssignerType
CVSS 3.1 4.4 MEDIUM CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H NVD Primary published
CVSS 2.0 2.1 none AV:L/AC:L/Au:N/C:N/I:N/A:P NVD Primary

Affected software and releases

Products and versions

14 products, 17 version entries
SourceVendorProductSchemeAffected versions
nvd canonical ubuntu linux generic 14.04 · 16.04 · 18.04
nvd debian debian linux generic 9.0
nvd linux linux kernel generic 5.0.21 · 5.3.11
nvd netapp active iq unified manager generic ≥ 9.5
nvd netapp aff a400 firmware generic any version
nvd netapp aff a700s firmware generic any version
nvd netapp data availability services generic any version
nvd netapp fas8300 firmware generic any version
nvd netapp fas8700 firmware generic any version
nvd netapp h610s firmware generic any version
nvd netapp hci management node generic any version
nvd netapp solidfire generic any version
nvd netapp steelstore cloud integrated storage generic any version
nvd opensuse leap generic 15.1

References

URLTags
http://lists.opensuse.org/opensuse-security-announce/2020-03/msg00021.html Mailing List, Third Party Advisory
https://github.com/bobfuzzer/CVE/tree/master/CVE-2019-19318 Exploit, Third Party Advisory
https://lists.debian.org/debian-lts-announce/2021/03/msg00010.html Mailing 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

Published2019-11-28By the CVE Program.
NVD record modified2026-06-17NVD's own last-modified date for this record.