CVE-2019-19036
btrfs_root_node in fs/btrfs/ctree.c in the Linux kernel through 5.3.12 allows a NULL pointer dereference because rcu_dereference(root->node) can be zero.
02 Description
btrfs_root_node in fs/btrfs/ctree.c in the Linux kernel through 5.3.12 allows a NULL pointer dereference because rcu_dereference(root->node) can be zero.
03 Exploitation and scoring
- Exploitation
- Not assessed. CISA has not published an exploitation assessment for this record, and it is not in the KEV catalog. That is an absence of assessment, not a finding of no risk.
- SSVC decision
- Not assessed by CISA
- EPSS probability
- 1.84% probability of exploitation activity in the next 30 days.
- EPSS percentile
- Equal to or higher than the score of 78.8% of scored records. A rank, not a probability.
- NVD base score
- 5.5 (CVSS v3.x), scored by the NVD independently of the CNA.
- NVD CVSS vector
- CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
- NVD analysis status
- Modified. NVD last modified this record on 2026-06-17.
- Red Hat severity
- Moderate. Red Hat's rating for its own products, not a CVSS rating.
Exploit-prediction scores from FIRST. Independent scoring and analysis status from the NVD. Vendor severity from Red Hat. Exploitation assessment and catalog membership from CISA.
04 Metadata
- Published
- 2019-11-21 02:00Z6 YR AGO
- Last updated
- 2024-08-05 02:09Z2 YR AGO
- Reserved
- 2019-11-17
- Assigning CNA
- mitre
- Record state
- PUBLISHED
- Severity
- Not rated by the issuing CNA
- CNA CVSS vector
- Not published by the issuing CNA
- Weaknesses
- CWE-476NULL Pointer DereferenceBase
- Data version
- 5.1
- Document digest
- 70449d92a93b9315440f924453696152becf7d4130db728ec9de46383ef56ae8
05 Affected products
06 References
- github.comhttps://github.com/bobfuzzer/CVE/tree/master/CVE-2019-19036
- security.netapp.comhttps://security.netapp.com/advisory/ntap-20191205-0001/
- lists.opensuse.orgopenSUSE-SU-2020:0336http://lists.opensuse.org/opensuse-security-announce/2020-03/msg00021.html
- usn.ubuntu.comUSN-4414-1https://usn.ubuntu.com/4414-1/
- usn.ubuntu.comUSN-4439-1https://usn.ubuntu.com/4439-1/
07 Fixed in
Debian 12
- linux Fixed in 5.3.7-1
Source: Debian Security Tracker, the Debian security team. Received through OSV.dev. Reformatted by exploit.cc.
Debian 13
- linux Fixed in 5.3.7-1
Source: Debian Security Tracker, the Debian security team. Received through OSV.dev. Reformatted by exploit.cc.
Debian 14
- linux Fixed in 5.3.7-1
Source: Debian Security Tracker, the Debian security team. Received through OSV.dev. Reformatted by exploit.cc.
Ubuntu 16.04 LTS
- linux-aws-hwe Fixed in 4.15.0-1079.83~16.04.1
- linux-azure Fixed in 4.15.0-1091.101~16.04.1
- linux-gcp Fixed in 4.15.0-1080.90~16.04.1
- linux-hwe Fixed in 4.15.0-112.113~16.04.1
- linux-hwe-edge No fix yet
- linux-oracle Fixed in 4.15.0-1050.54~16.04.1
Source: Ubuntu, Canonical Ltd. Licensed under CC BY-SA 4.0. Received through OSV.dev. Reformatted by exploit.cc.
Ubuntu 18.04 LTS
- linux Fixed in 4.15.0-109.110
- linux-aws Fixed in 4.15.0-1077.81
- linux-aws-5.0 No fix yet
- linux-azure No fix yet
- linux-azure-4.15 Fixed in 4.15.0-1091.101
- linux-azure-edge No fix yet
- linux-gcp No fix yet
- linux-gcp-4.15 Fixed in 4.15.0-1080.90
- linux-gcp-edge No fix yet
- linux-gke-4.15 Fixed in 4.15.0-1066.69
- linux-gke-5.0 Fixed in 5.0.0-1045.46
- linux-hwe Fixed in 5.3.0-26.28~18.04.1
- linux-hwe-edge Fixed in 5.3.0-22.24~18.04.1
- linux-kvm Fixed in 4.15.0-1069.70
- linux-oem Fixed in 4.15.0-1091.101
- linux-oem-osp1 Fixed in 5.0.0-1065.70
- linux-oracle Fixed in 4.15.0-1048.52
- linux-oracle-5.0 No fix yet
- linux-raspi2 Fixed in 4.15.0-1065.69
- linux-snapdragon Fixed in 4.15.0-1083.91
Source: Ubuntu, Canonical Ltd. Licensed under CC BY-SA 4.0. Received through OSV.dev. Reformatted by exploit.cc.
Ubuntu 20.04 LTS
- linux-azure-fde No fix yet
- linux-gke No fix yet
- linux-raspi2 No fix yet
Source: Ubuntu, Canonical Ltd. Licensed under CC BY-SA 4.0. Received through OSV.dev. Reformatted by exploit.cc.
Ubuntu 22.04 LTS
- linux-intel-iot-realtime No fix yet
- linux-realtime No fix yet
- linux-riscv No fix yet
Source: Ubuntu, Canonical Ltd. Licensed under CC BY-SA 4.0. Received through OSV.dev. Reformatted by exploit.cc.
Ubuntu 24.04 LTS
- linux-raspi-realtime No fix yet
Source: Ubuntu, Canonical Ltd. Licensed under CC BY-SA 4.0. Received through OSV.dev. Reformatted by exploit.cc.
Ubuntu Pro 14.04 LTS
- linux No fix yet
- linux-aws No fix yet
- linux-azure Fixed in 4.15.0-1091.101~14.04.1Available with Ubuntu Pro (Infra-only): https://ubuntu.com/pro
- linux-lts-xenial No fix yet
Source: Ubuntu, Canonical Ltd. Licensed under CC BY-SA 4.0. Received through OSV.dev. Reformatted by exploit.cc.
Ubuntu Pro 16.04 LTS
- linux No fix yet
- linux-aws No fix yet
- linux-kvm No fix yet
Source: Ubuntu, Canonical Ltd. Licensed under CC BY-SA 4.0. Received through OSV.dev. Reformatted by exploit.cc.
Ubuntu Pro 20.04 LTS
- linux-azure-fde-5.15 Fixed in 5.15.0-1114.123~20.04.1Available with Ubuntu Pro (Infra-only): https://ubuntu.com/pro
Source: Ubuntu, Canonical Ltd. Licensed under CC BY-SA 4.0. Received through OSV.dev. Reformatted by exploit.cc.
Ubuntu Pro FIPS-updates 16.04 LTS
- linux-fips No fix yet
Source: Ubuntu, Canonical Ltd. Licensed under CC BY-SA 4.0. Received through OSV.dev. Reformatted by exploit.cc.
Ubuntu Pro FIPS-updates 18.04 LTS
- linux-aws-fips Fixed in 4.15.0-2022.22Available with Ubuntu Pro: https://ubuntu.com/pro
- linux-azure-fips Fixed in 4.15.0-2006.7Available with Ubuntu Pro: https://ubuntu.com/pro
- linux-fips Fixed in 4.15.0-1037.42Available with Ubuntu Pro: https://ubuntu.com/pro
Source: Ubuntu, Canonical Ltd. Licensed under CC BY-SA 4.0. Received through OSV.dev. Reformatted by exploit.cc.
Ubuntu Pro FIPS 16.04 LTS
- linux-fips No fix yet
Source: Ubuntu, Canonical Ltd. Licensed under CC BY-SA 4.0. Received through OSV.dev. Reformatted by exploit.cc.
Ubuntu Pro FIPS 18.04 LTS
- linux-aws-fips No fix yet
- linux-azure-fips No fix yet
- linux-gcp-fips No fix yet
Source: Ubuntu, Canonical Ltd. Licensed under CC BY-SA 4.0. Received through OSV.dev. Reformatted by exploit.cc.
A release or ecosystem missing from this list has no record here. It may be unaffected or not covered by the source. Source notices and licences.