CVE-2019-19036
kernel: null-pointer dereference in btrfs_root_node in fs/btrfs/ctree.c
Severity
ModerateRed Hat Product Security
CVSS 3.1
Review impact separately from score.
Published · November 18, 2019
Updated · June 28, 2026
Description
A NULL pointer dereference flaw in the btrfs_root_node in fs/btrfs/ctree.c may occur if the rcu_dereference function return is not validated in time of failure. This flaw could allow an attacker to crash the system or leak internal kernel information.
CVSS score applicability
The CVSS score(s) listed for this vulnerability do not reflect the associated product's status, and are included for informational purposes to better understand the severity of this vulnerability.
Mitigation
Mitigation for this issue is either not available or the currently available options don't meet the Red Hat Product Security criteria comprising ease of use and deployment, applicability to widespread installation base or stability.
CVSS / CWE
CVSS 3.1 · 5.5CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
CWE-476 · NULL Pointer Dereference