CVE-2019-18885 Null dereference in n/a

What is CVE-2019-18885?

CVE-2019-18885 is a medium-severity vulnerability in Linux kernel, published on 14 Nov 2019. It can only be exploited from the same machine or local network, with no action from the victim.

Official 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.

Weakness: CWE-476

Which versions are affected by CVE-2019-18885?

It affects 1 product.

Products include Linux kernel.

How do I fix CVE-2019-18885?

Upgrade to a fixed version.

Is CVE-2019-18885 being exploited?

There is no known exploitation of CVE-2019-18885 in the wild and no public exploit code.

Public exploit code: 1 proofs of concept on GitHub.

Other vulnerabilities in Linux kernel

• CVE-2026-53266 Linux Kernel Out-of-Bounds Write Exploited High 8.8
• CVE-2013-6282 Linux Kernel Improper Input Validation Exploited High 8.8
• CVE-2022-0185 Linux Kernel Heap-Based Buffer Overflow Exploited High 8.4
• CVE-2013-2094 Linux Kernel Privilege Escalation Exploited High 8.4
• CVE-2026-53362 Linux Kernel Unspecified Exploited High 7.8

All Linux kernel vulnerabilities

Sources

• CVE record
• NVD
• OSV
• GitHub advisory
• How this page is made

Also known as DEBIAN-CVE-2019-18885, GHSA-5f42-cq3c-qrm7, UBUNTU-CVE-2019-18885.