CVE-2019-18885

kernel: fs/btrfs/volumes.c allows a btrfs_verify_dev_extents NULL pointer dereference

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Severity

Low

Red Hat Product Security

5.5

CVSS 3.0

Review impact separately from score.

Published · January 19, 2019

Updated · June 28, 2026

Description

fs/btrfs/volumes.c in the Linux kernel before 5.1 allows a btrfs_verify_dev_extents NULL pointer dereference via a crafted btrfs image because fs_devices->devices is mishandled within find_device, aka CID-09ba3bc9dd15.

Statement

The Btrfs was introduced as a Technology Preview in both Red Hat Enterprise Linux 6 and 7 but is currently deprecated and not supported in both Red Hat Enterprise Linux releases.

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

No mitigation is specified in collected source.

CVSS / CWE

CVSS 3.0 · 5.5
CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

CWE-476 · NULL Pointer Dereference