What is CVE-2019-19037?

CVE-2019-19037 is a medium-severity vulnerability in Linux Kernel, classified under NULL Pointer Dereference. CVSS score: 5.5/10. Published 2019-11-21.

How severe is CVE-2019-19037?

Medium severity. CVSS v3 base score is 5.5 out of 10.

NULL pointer dereference in Linux Kernel

CVE-2019-19037

ext4_empty_dir in fs/ext4/namei.c in the Linux kernel through 5.3.12 allows a NULL pointer dereference because ext4_read_dirblock(inode,0,DIRENT_HTREE) can be zero.

Published 2019-11-21 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 5.5 (Medium). Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H.

EPSS exploit prediction

EPSS: 0.019 (78.7th percentile), scored 2026-10-01.

Low probability of exploitation in the next 30 days, but still tracked. 79th percentile — 78.7% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.019 · newest: 0.019 · change: 0.000

Affected products

Linux Kernel

Weakness classification (CWE)

CWE-476 — NULL Pointer Dereference

References

github.com/bobfuzzer/CVE/tree/master/CVE-2019-19037 (Exploit, Third Party Advisory)
security.netapp.com/advisory/ntap-20191205-0001/
lists.debian.org/debian-lts-announce/2020/03/msg00001.html (mailing-list)

Frequently asked questions

What is CVE-2019-19037?: CVE-2019-19037 is a medium-severity vulnerability in Linux Kernel, classified under NULL Pointer Dereference. CVSS score: 5.5/10. Published 2019-11-21.
How severe is CVE-2019-19037?: Medium severity. CVSS v3 base score is 5.5 out of 10.