What is CVE-2019-16089?

CVE-2019-16089 is a medium-severity vulnerability in Linux Kernel, classified under NULL Pointer Dereference. CVSS score: 4.1/10. Published 2019-09-06.

How severe is CVE-2019-16089?

Medium severity. CVSS v3 base score is 4.1 out of 10.

NULL pointer dereference in Linux Kernel

CVE-2019-16089

An issue was discovered in the Linux kernel through 5.2.13. nbd_genl_status in drivers/block/nbd.c does not check the nla_nest_start_noflag return value.

Published 2019-09-06 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 4.1 (Medium). Vector: CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:U/C:N/I:N/A:H.

EPSS exploit prediction

EPSS: 0.004 (30.3th percentile), scored 2026-10-01.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 30th percentile — 30.3% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.004 · newest: 0.004 · change: 0.000

Affected products

Linux Kernel

Weakness classification (CWE)

CWE-476 — NULL Pointer Dereference

References

lore.kernel.org/patchwork/patch/1106884/ (Patch, Mailing List, Vendor Advisory)
security.netapp.com/advisory/ntap-20191004-0001/ (Third Party Advisory)
support.f5.com/csp/article/K03814795
lore.kernel.org/patchwork/patch/1126650/ (Patch, Vendor Advisory)
usn.ubuntu.com/4414-1/ (vendor-advisory)
usn.ubuntu.com/4425-1/ (vendor-advisory)
usn.ubuntu.com/4439-1/ (vendor-advisory)
usn.ubuntu.com/4440-1/ (vendor-advisory)

Frequently asked questions

What is CVE-2019-16089?: CVE-2019-16089 is a medium-severity vulnerability in Linux Kernel, classified under NULL Pointer Dereference. CVSS score: 4.1/10. Published 2019-09-06.
How severe is CVE-2019-16089?: Medium severity. CVSS v3 base score is 4.1 out of 10.