No exploitation reportedFix available

CVE-2017-16939

Q: Is CVE-2017-16939 actively exploited?

Active exploitation of CVE-2017-16939 has not been confirmed. Its EPSS score was 2.2% on 2026-10-22, the estimated probability of exploitation in the next 30 days.

Q: What is the CVSS score for CVE-2017-16939?

CVE-2017-16939 has a CVSS v3 base score of 7.8 (HIGH severity), with vector string CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H.

No exploitation reported by the sources we read.

Published2017-11-24
Fixed in4.13.11 · 4.9.60 · 4.4.104 · 4.1.48 · 3.18.86 · 3.16.52
WeaknessCWE-416

Am I affected?

With a domain, we read the version its public headers and pages expose. A distribution build can carry the fix under an older number.

Description

The XFRM dump policy implementation in net/xfrm/xfrm_user.c in the Linux kernel before 4.13.11 allows local users to gain privileges or cause a denial of service (use-after-free) via a crafted SO_RCVBUF setsockopt system call in conjunction with XFRM_MSG_GETPOLICY Netlink messages.

Timeline

dates in UTC

2017-11-2410:29CVE publishedNVD

Observed activity

isMalicious corpus · updated 2026-10-23 18:48 UTC

Indicators tagged with this CVE, per day0 indicators over 7 days

Block these indicators

Firewall list (EDL, text): https://api.ismalicious.com/edl/cve/CVE-2017-16939?format=txt
CSV export: https://api.ismalicious.com/edl/cve/CVE-2017-16939?format=csv
TAXII collection of exploited CVEs
The EDL and CSV take an API key on the Pro plan.

Versions per branch

NVD

Linux linux kernel

Branch	Affected	Fixed in	Source
4.x	≥ 4.10, < 4.13.11	4.13.11	NVD
4.x	≥ 4.5, < 4.9.60	4.9.60	NVD
4.x	≥ 4.2, < 4.4.104	4.4.104	NVD
4.1	≥ 3.19, < 4.1.48	4.1.48	NVD
3.x	≥ 3.17, < 3.18.86	3.18.86	NVD
3.x	≥ 3.3, < 3.16.52	3.16.52	NVD
3.2	≥ 2.6.28, < 3.2.97	3.2.97	NVD

Debian debian linux

Branch	Affected	Fixed in	Source
8.0	= 8.0	no fix published	NVD

as publishedRanges as NVD and OSV publish them; a distribution’s build can be fixed under an older number.

Fix

Update Linux linux kernel to 4.13.11 · 4.9.60 · 4.4.104 · 4.1.48 · 3.18.86 · 3.16.52 · 3.2.97

Advisories and patches

git.kernel.orgPatch
www.kernel.orgPatch · Vendor Advisory
blogs.securiteam.comPatch
github.comPatch

Detection

Nuclei template: none so far
Exploit-DB: no entry
Proof-of-concept repositories: none listed

Sources

NVDCVSS 3.17.8read 2026-10-23
NVDCVSS 2.07.2read 2026-10-23
NVDweakness (CWE)CWE-416read 2026-10-23
FIRST EPSSEPSS score2.2 %2026-10-22

Technical details

CVSS v3 Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Published: 2017-11-24
Last Modified: 2026-06-17
NVD status: Modified

Frequently asked questions

What is CVE-2017-16939?

Is CVE-2017-16939 actively exploited?

Active exploitation of CVE-2017-16939 has not been confirmed. Its EPSS score was 2.2% on 2026-10-22, the estimated probability of exploitation in the next 30 days.

What is the CVSS score for CVE-2017-16939?

CVE-2017-16939 has a CVSS v3 base score of 7.8 (HIGH severity), with vector string CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H.

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