Public proof of conceptFix available

CVE-2017-16995

Q: Is CVE-2017-16995 actively exploited?

Active exploitation of CVE-2017-16995 has not been confirmed. Its EPSS score was 30.1% on 2026-10-23, the estimated probability of exploitation in the next 30 days.

Q: What is the CVSS score for CVE-2017-16995?

CVE-2017-16995 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.

A public proof of concept exists; no exploitation attested.

Published2017-12-27
WeaknessCWE-119

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 check_alu_op function in kernel/bpf/verifier.c in the Linux kernel through 4.4 allows local users to cause a denial of service (memory corruption) or possibly have unspecified other impact by leveraging incorrect sign extension.

Timeline

dates in UTC

2017-12-2717:08CVE publishedNVD
2026-10-2319:23First public proof of conceptPoC-in-GitHub
2026-10-2319:23EPSS crossed 10 %FIRST EPSS

Observed activity

isMalicious corpus · updated 2026-10-23 21:37 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-2017-16995?format=txt
CSV export: https://api.ismalicious.com/edl/cve/CVE-2017-16995?format=csv
TAXII collection of exploited CVEs
The EDL and CSV take an API key on the Pro plan.

Versions per branch

NVD

Canonical ubuntu linux

Branch	Affected	Fixed in	Source
14.4	= 14.04	no fix published	NVD
16.4	= 16.04	no fix published	NVD

Linux linux kernel

Branch	Affected	Fixed in	Source
4.x	≥ 4.10, < 4.14.9	4.14.9	NVD
4.9	≥ 4.9, < 4.9.72	4.9.72	NVD

Debian debian linux

Branch	Affected	Fixed in	Source
9.0	= 9.0	no fix published	NVD

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

Fix

Advisories and patches

git.kernel.orgVendor Advisory
git.kernel.orgVendor Advisory

Detection

read 2026-10-23 19:23 UTC

Nuclei template: none so far
Exploit-DB: no entry
Proof-of-concept repositories: 15 repositories, unverifiedC0dak/CVE-2017-16995Al1ex/CVE-2017-16995gugronnier/CVE-2017-16995senyuuri/cve-2017-16995vnik5287/CVE-2017-16995

Sources

NVDCVSS 3.17.8read 2026-10-23
NVDCVSS 2.07.2read 2026-10-23
NVDweakness (CWE)CWE-119read 2026-10-23
FIRST EPSSEPSS score30.1 %read 2026-10-23
PoC-in-GitHubproof of concept15read 2026-10-23

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: 2017-12-27
Last Modified: 2026-06-17
NVD status: Modified

Frequently asked questions

What is CVE-2017-16995?

Is CVE-2017-16995 actively exploited?

Active exploitation of CVE-2017-16995 has not been confirmed. Its EPSS score was 30.1% on 2026-10-23, the estimated probability of exploitation in the next 30 days.

What is the CVSS score for CVE-2017-16995?

CVE-2017-16995 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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