What is CVE-2019-18680?

CVE-2019-18680 is a high-severity vulnerability in Linux Kernel, classified under NULL Pointer Dereference. CVSS score: 7.5/10. Published 2019-11-04.

How severe is CVE-2019-18680?

High severity. CVSS v3 base score is 7.5 out of 10.

NULL pointer dereference in Linux Kernel

CVE-2019-18680

An issue was discovered in the Linux kernel 4.4.x before 4.4.195. There is a NULL pointer dereference in rds_tcp_kill_sock() in net/rds/tcp.c that will cause denial of service, aka CID-91573ae4aed0.

Published 2019-11-04 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.

EPSS exploit prediction

EPSS: 0.036 (89.2th percentile), scored 2026-10-01.

Low probability of exploitation in the next 30 days, but still tracked. 89th percentile — 89.2% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.036 · newest: 0.036 · change: 0.000

Affected products

Linux Kernel

Weakness classification (CWE)

CWE-476 — NULL Pointer Dereference

References

lkml.org/lkml/2019/9/18/337 (Exploit, Mailing List, Vendor Advisory)
cdn.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.4.195 (Exploit, Patch, Vendor Advisory)
github.com/torvalds/linux/commit/91573ae4aed0a49660abdad4d42f2a0db995ee5e (Patch, Third Party Advisory)
git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/ (Patch, Vendor Advisory)
security.netapp.com/advisory/ntap-20191205-0001/ (Third Party Advisory)

Frequently asked questions

What is CVE-2019-18680?: CVE-2019-18680 is a high-severity vulnerability in Linux Kernel, classified under NULL Pointer Dereference. CVSS score: 7.5/10. Published 2019-11-04.
How severe is CVE-2019-18680?: High severity. CVSS v3 base score is 7.5 out of 10.