NULL pointer dereference in FreeBSD

CVE-2018-6925

In FreeBSD before 11.2-STABLE(r338986), 11.2-RELEASE-p4, 11.1-RELEASE-p15, 10.4-STABLE(r338985), and 10.4-RELEASE-p13, due to improper maintenance of IPv6 protocol control block flags through various failure paths, an unprivileged authenticated local user may be able to cause a NULL pointer dereference causing the kernel to crash.

Published · last modified .

CVSS v3 metric

CVSS v3 base score 5.5 (Medium). Vector: CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H.

EPSS exploit prediction

EPSS: 0.003 (22.7th percentile), scored .

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 23rd percentile — 22.7% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS trend (30 days)EPSS over the last 30 days for CVE-2018-6925: held from 0.003 to 0.003.

EPSS over last 30 days · oldest: 0.003 · newest: 0.003 · change: 0.000

Affected products

  • FreeBSD — versions 10.x before 10.4-RELEASE-p13, 11.2 before 11.2-RELEASE-p4, 11.1

Weakness classification (CWE)

References

Frequently asked questions

What is CVE-2018-6925?
CVE-2018-6925 is a medium-severity vulnerability in FreeBSD, classified under NULL Pointer Dereference. CVSS score: 5.5/10. Published 2018-09-28.
How severe is CVE-2018-6925?
Medium severity. CVSS v3 base score is 5.5 out of 10.