No exploitation reported

CVE-2016-9644

No exploitation reported by the sources we read.

Published2016-11-28
WeaknessCWE-264

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 __get_user_asm_ex macro in arch/x86/include/asm/uaccess.h in the Linux kernel 4.4.22 through 4.4.28 contains extended asm statements that are incompatible with the exception table, which allows local users to obtain root access on non-SMEP platforms via a crafted application. NOTE: this vulnerability exists because of incorrect backporting of the CVE-2016-9178 patch to older kernels.

Timeline

dates in UTC

2016-11-2803:59CVE 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-2016-9644?format=txt
CSV export: https://api.ismalicious.com/edl/cve/CVE-2016-9644?format=csv
TAXII collection of exploited CVEs
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Versions per branch

NVD

Linux linux kernel

Branch	Affected	Fixed in	Source
4.4	= 4.4.22	no fix published	NVD
4.4	= 4.4.23	no fix published	NVD
4.4	= 4.4.24	no fix published	NVD
4.4	= 4.4.25	no fix published	NVD
4.4	= 4.4.26	no fix published	NVD
4.4	= 4.4.27	no fix published	NVD
4.4	= 4.4.28	no fix published	NVD

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

Fix

No fix published by the sources we read yet. NVD record

Detection

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

Sources

NVDCVSS 3.07.8read 2026-10-23
NVDCVSS 2.09.3read 2026-10-23
NVDweakness (CWE)CWE-264read 2026-10-23
FIRST EPSSEPSS score1.5 %2026-10-22

Technical details

CVSS v3 Vector: CVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Published: 2016-11-28
Last Modified: 2026-06-17
NVD status: Modified

Frequently asked questions

What is CVE-2016-9644?

Is CVE-2016-9644 actively exploited?

Active exploitation of CVE-2016-9644 has not been confirmed. Its EPSS score was 1.5% on 2026-10-22, the estimated probability of exploitation in the next 30 days.

What is the CVSS score for CVE-2016-9644?

CVE-2016-9644 has a CVSS v3 base score of 7.8 (HIGH severity), with vector string CVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H.

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